JP6228269B1 - Determination system, program, and determination method - Google Patents

Abstract

[PROBLEMS] To appropriately determine whether an answer to a drawing problem is correct in consideration of an answer process. A system (1) is configured to determine whether or not an answer to a drawing question is given through a display device (40). The system (1) includes a recording unit (63) and a determination unit (65). The recording unit (63) is configured to record, as answer data (DA), information related to a plurality of drawing operations performed step by step until the user answers the drawing problem using the input device (50). The determination unit (65) determines the correctness of the answer to the drawing problem by determining the drawing procedure by the user when answering the drawing problem based on the answer data (DA) recorded by the recording unit (63). Composed. [Selection] Figure 4

Description

  The present disclosure relates to a system that determines whether an answer to a drawing problem is correct.

  2. Description of the Related Art Conventionally, there has been known an electronic notebook that displays a base image on a display unit and displays writing contents on the display unit when a writing operation is performed on the base image with a touch pen (see Patent Document 1). The base image has, for example, a configuration in which a question display column and an answer column are laid out. A system is also known in which answer data representing an answer handwritten by a learner is obtained from a learning terminal and scored (see Patent Document 2).

JP 2013-145265 A JP 2004-038033 A

  In the conventional system described above, the answer written by the user in the answer column is recognized and graded. However, for some learning subjects, specifically mathematics and mathematics, scoring considering the answering process is important for proper learning by the learner. In particular, regarding the drawing problem, there is a possibility that the user will sensuously draw points and lines and answer the drawing problem. An answer by sensuous drawing that does not follow such a legitimate procedure should be determined as an incorrect answer.

  Therefore, in one aspect of the present disclosure, it is desirable to be able to provide a technique that can appropriately determine whether an answer to a drawing problem is correct or not in consideration of an answer process.

  A determination system according to an aspect of the present disclosure is configured to determine whether or not an answer to a drawing question that is presented through a display device is correct. The determination system includes a recording unit and a determination unit.

  The recording unit is configured to record, as answer data, information related to a plurality of drawing operations performed step by step until the user answers the drawing problem using the input device. The input device may be an input device that is integrated with or attached to the display device.

  The determination unit is configured to determine whether the answer to the drawing problem is correct by determining the drawing procedure by the user when answering the drawing problem based on the answer data recorded by the recording unit.

  According to this determination system, the answer data includes information on a plurality of drawing operations that are performed step by step in the user's answer process. Therefore, the determination system can appropriately determine whether the answer is correct or not in consideration of the user's drawing procedure in the answer process.

  According to one aspect of the present disclosure, the determination unit determines that an answer to a drawing problem is an incorrect answer when a graphic element to be created by a predetermined series of drawing operations is not created by a series of drawing operations. Can be configured to. According to this determination system, it is possible to suppress the possibility that an answer based on a sensory drawing operation by a user is determined as a correct answer. The series of drawing operations can include a first operation for creating a first graphic element and a second operation for creating a second graphic element based on the first graphic element. The second operation may be an operation for creating the second graphic element based on the position or shape of at least a part of the first graphic element.

  According to one aspect of the present disclosure, the answer data may be configured to include drawing information representing details of a graphic element created by each of a plurality of drawing operations. The recording unit associates the drawing information related to the graphic element created on the basis of the graphic element created by the preceding drawing operation among a plurality of drawing operations with the drawing information of the graphic element created by the preceding drawing operation. The information may be recorded as information representing the relationship with the graphic element created by the preceding drawing operation. In this case, the determination unit can determine the drawing procedure by the user at the time of answering the drawing problem based on the association information included in the answer data.

  According to one aspect of the present disclosure, the drawing information may include type information indicating the type of the created graphic element and arrangement information indicating the arrangement of the graphic element. The graphic element layout information created based on the graphic element created by the preceding drawing operation is associated with the graphic element drawing information created by the preceding drawing operation, and the figure created by the preceding drawing operation. It can be recorded as information representing the arrangement with respect to the element.

  The answer data is data having a nested structure in which the drawing information related to the graphic element created based on the graphic element created by the preceding drawing operation includes the drawing information of the graphic element created by the preceding drawing operation. May be. In this case, the determination unit discriminates the drawing procedure by the user by analyzing the drawing information of the graphic element created by the drawing operation at the final stage of the plurality of drawing operations and the nested structure in the drawing information. The correctness of the answer to the drawing problem can be determined.

  According to one aspect of the present disclosure, the drawing problem includes an initial graphic element. The initial graphic element is a graphic element that constitutes a drawing problem and is displayed on the display device when the question is given. In this case, the recording unit may be configured to record the drawing information related to the graphic element created based on the initial graphic element among the plurality of drawing operations as information representing the relationship with the initial graphic element.

  According to one aspect of the present disclosure, the function of the determination system may be realized by executing a program by a computer. According to one aspect of the present disclosure, a program for causing a computer to function as at least one of the recording unit and the determination unit described above may be provided. The program may be provided through a telecommunication line or may be provided by being stored in a computer-readable non-transitional physical recording medium.

  According to one aspect of the present disclosure, there is provided a method for determining whether an answer to a drawing question presented through a display device is correct or not, and a method for determining whether an answer is correct in the same manner as in the above determination system. Good.

  For example, the computer records information on a plurality of drawing operations performed step by step until the user answers the drawing problem using the input device as answer data, and the computer is recorded on the storage device. A determination method may be provided that includes determining a drawing procedure by a user at the time of answering a drawing question based on the answer data, and determining whether the answer to the drawing question is correct.

It is a block diagram showing the structure of a learning terminal. It is a figure showing the 1st example of a problem screen. It is a figure showing the 2nd example of a problem screen. It is a block diagram showing the structure of each unit implement | achieved by the arithmetic device. It is the figure explaining the production | generation process of answer data with drawing operation of the answer process. It is explanatory drawing regarding the right / wrong determination of an answer. It is explanatory drawing regarding the example of a correct answer of a 1st question. 8A-8C are explanatory diagrams relating to a problem having a plurality of correct answers. It is a flowchart showing the process which a determination unit performs.

In the following, exemplary embodiments of the present disclosure will be described with reference to the drawings.
The learning terminal 1 of the present embodiment is configured to present a learning problem, determine whether the answer to the problem is correct from the user, and display the result to the user. This learning terminal 1 is configured to give questions relating to mathematics and mathematics, in particular, drawing problems. The learning terminal 1 can be a tablet terminal.

  The learning terminal 1 illustrated in FIG. 1 includes an arithmetic device 10, a storage device 20, a communication device 30, a display device 40, and an input device 50. The arithmetic device 10 includes a CPU 11 and a RAM 13. The storage device 20 stores various programs and data. An example of the storage device 20 is a flash memory.

  The CPU 11 performs a process according to a program stored in the storage device 20 and performs overall control of the entire learning terminal 1. The RAM 13 is used as a work area when the CPU 11 executes processing. The process executed by the arithmetic device 10 described below may be understood as a process executed by the CPU 11.

  The communication device 30 is configured to communicate with the external server device 100 under the control of the arithmetic device 10. The server apparatus 100 has problem data D1. The communication device 30 acquires the problem data D1 through communication with the server apparatus 100 and provides it to the arithmetic device 10. The communication device 30 is configured to have at least one of a cellular communication function and a wireless LAN communication function.

  The display device 40 is controlled by the computing device 10 and configured to display various types of information for the user. An example of the display device 40 is a liquid crystal display. The computing device 10 displays the problem on the display device 40 based on the problem data D1 acquired from the server device 100.

  The input device 50 is configured to input an operation signal from a user to the arithmetic device 10. The input device 50 is configured by a touch panel on the display device 40, for example. The input device 50 may include a key switch that can be operated by the user.

According to the example shown in FIGS. 2 and 3, the question screen G0 including the drawing area G1 and the tool area G2 is displayed on the display device 40 by the control of the arithmetic device 10 when the questions are given.
The drawing area G1 is an area for displaying a drawing question including an initial graphic element and accepting a drawing operation from the user in an answering process to the drawing question through the input device 50. The drawing operation referred to here corresponds to a drawing operation of a graphic element electronically performed by the user through the input device 50. Graphic elements include all geometric elements including points, lines, polygons, and circles. The line includes a straight line and a curved line such as an arc. The initial graphic element is a graphic element that constitutes a drawing problem, and is a graphic element that is displayed on the display device 40 when the question is given. The drawing problem is usually solved by a drawing operation using the initial graphic element as a base point.

  The tool area G <b> 2 is configured as a screen on which an electronic tool for drawing can be selected through the input device 50. According to the example shown in FIGS. 2 and 3, operation objects J1 to J5 for each electronic tool are displayed in the tool area. When one of these operation objects J1 to J5 is selected by the user through the input device 50, the input device 50 functions as an electronic tool corresponding to the selected operation objects J1 to J5 together with the arithmetic device 10, and the user A graphic element corresponding to the operation from is drawn in the drawing area G1.

  According to the example shown in FIGS. 2 and 3, the electronic tool provided by selecting the first operation object J1 allows the user to input a drawing operation equivalent to a circle or arc drawing operation using a compass. This is an electronic tool that can be performed on the drawing area G1 through the device 50. The electronic tool provided by selecting the second operation object J2 is an electronic tool that allows the user to perform a drawing operation equivalent to a point drawing operation on the drawing region G1 through the input device 50.

  The electronic tool provided by the selection of the third operation object J3 is an electronic tool that allows the user to perform a drawing operation equivalent to a straight line drawing operation using a ruler on the drawing region G1 through the input device 50. Is a tool. The electronic tool provided by selecting the fourth operation object J4 is an electronic tool that allows the user to perform a drawing operation equivalent to a curve drawing operation on the drawing region G1 through the input device 50. In addition, various electronic tools such as an electronic tool corresponding to an eraser are provided.

  The drawing problem shown in FIG. 2 is a problem of drawing a perpendicular line of the straight line L0 passing through the point P0. The initial graphic elements in FIG. 2 are a point P0 and a straight line L0. The drawing problem shown in FIG. 3 is a problem of drawing a bisector of a sector OEF. The initial graphic elements in FIG. 3 are point O, point E, point F, line segment OE, line segment OF, and arc EF. The user can answer these questions by a plurality of drawing operations using an electronic tool.

  The learning terminal 1 of the present embodiment is configured to determine an answer without a valid drawing procedure as an incorrect answer for these drawing problems. This determination function is realized by information processing through a program.

As illustrated in FIG. 4, the arithmetic device 10 functions as a question-taking unit 61, a recording unit 63, and a determination unit 65 according to a program stored in the storage device 20.
The questioning unit 61 communicates with the server device 100 to obtain the problem data D1. The questioning unit 61 issues a drawing question through the display device 40 based on the acquired question data D1. The question data D1 includes question image data D11, initial element definition data D12, and correct answer definition data D13. The problem data D1 is prepared for each problem.

  The problem image data D11 is image data for displaying a plotting problem including an initial graphic element. The initial element definition data D12 is data that defines initial graphic elements constituting a drawing problem. The initial element definition data D12 has definition information for each initial graphic element. The definition information represents the name (parameter name) of the corresponding initial graphic element, the type of the initial graphic element, and the position coordinates of the initial graphic element. The types of initial graphic elements include, for example, a point “Point”, a straight line “Line”, and an arc “Arc”. In the definition information, the position coordinates of the initial graphic element are represented by pixel coordinates on the display device 40, for example. The correct answer definition data D13 is data that is referred to when determining whether the answer to the drawing question is correct, and represents the correct drawing procedure of the drawing question. Details of the correct answer definition data D13 will be described later.

  The questioning unit 61 controls the display device 40 so that the corresponding drawing problem is displayed in the drawing area G1 based on the question image data D11, and displays the question screen G0 having the drawing area G1 and the tool area G2. It is displayed on the device 40. With this display control, the questioning unit 61 issues a drawing question corresponding to the question data D1 to the user through the display device 40. After the questioning, the questioning unit 61 receives a drawing operation from the user through the input device 50, and controls the display device 40 so that the graphic element corresponding to the drawing operation is displayed in the drawing region G1.

  The recording unit 63 is configured to record, as answer data DA, information related to a plurality of drawing operations performed stepwise through the input device 50 until the user answers the drawing problem. Specifically, the recording unit 63 records the information regarding the plurality of drawing operations as the answer data DA in accordance with the recording instruction from the questioning unit 61 after the questioning by the questioning unit 61. Recording is performed until an operation signal indicating that the answer is completed is input from the user through the input device 50. The answer data DA is temporarily stored in the RAM 13.

  When an operation signal indicating that the answer has been completed is input from the user through the input device 50, the determination unit 65, according to the determination instruction input from the question unit 61, and the answer data DA recorded by the recording unit 63 and the problem data Based on the correct answer definition data D13 possessed by D1, the drawing procedure by the user in the answering process for the drawing problem is determined, and the correctness of the answer to the drawing problem is determined.

  Here, the details of the recording operation by the recording unit 63 will be described with reference to FIG. FIG. 5 shows the correspondence between the drawing operation when the drawing problem shown in FIG. 2 is given and the recording operation by the recording unit 63 in time series. The correct answer to the drawing problem that draws the perpendicular line L0 passing through the point P0 shown in FIG. 2 can be obtained by performing the following first to third drawing operations.

  In the first drawing operation, as shown in the upper left part of FIG. 5, arcs A1 and A2 having a center as a point P0 and arcs A1 and A2 intersecting with the straight line L0 are drawn, and the point P0 and the arcs A1 and A2 are drawn. This is an operation for generating two intersecting points C1 and C2. The radii of the arcs A1 and A2 are arbitrary radii on the condition that the arcs A1 and A2 are the same radius and that the arcs A1 and A2 intersect the straight line L0. Instead of the arcs A1 and A2, it is also possible to draw one wide-angle arc that generates two intersections C1 and C2.

  As shown in the middle part on the left side of FIG. 5, the second drawing operation is performed with arcs A3 and A4 centering on the intersections C1 and C2 with the two intersections C1 and C2 generated by the first drawing operation as base points. In this operation, an intersection C3 between the arc A3 and the arc A4 is generated by drawing arcs A3 and A4 having the same radius that intersect each other. The radii of the arcs A3 and A4 are arbitrary radii on condition that the arcs A3 and A4 have the same radius and the arcs A3 and A4 intersect.

  The third drawing operation is an operation of drawing a straight line L1 passing through the intersection C3 and the point P0 generated by the second drawing operation as shown in the lower left part of FIG. With this operation, a perpendicular line passing through the point P0 is drawn.

  When the first to third drawing operations are performed, the recording unit 63 records the drawing operation as follows. When the first drawing operation is performed, the recording unit 63 adds the function Arc (Point (P0), r1, θ1, θ2) to the answer data DA as information related to the drawing operation of the arc A1. The function type “Arc” indicates that the type of the graphic element created by the drawing operation is an arc. The parameters Point (P0), r1, θ1, and θ2 of the function Arc indicate the arrangement of arcs. Specifically, the arc is an arc of radius r1 with the center being the point P0, and from the angles θ1 to θ2. It shows that the arc has an angular range of. What is characteristic in this embodiment is that the arrangement of arcs is not described in pixel coordinates, but is described with reference to a point P0, which is a graphic element used as a reference for drawing. Point (P0) refers to the definition information of the point P0, which is one of the initial graphic elements included in the initial element definition data D12.

  Similarly, when the first drawing operation is performed, the recording unit 63 adds the function Arc (Point (P0), r2, θ3, θ4) to the answer data DA as information related to the drawing operation of the arc A2. This function indicates an arc having a radius r2 with the center being a point P0 and having an angle range from an angle θ3 to θ4. When the drawing operation corresponding to the correct answer is performed, the radius r1 and the radius r2 are the same value.

  According to the example shown in FIG. 5, the parameter A1 is assigned to the output of the function Arc (Point (P0), r1, θ1, θ2), and the parameter A2 is output to the output of the function Arc (Point (P0), r2, θ3, θ4). These functions are described in the answer data DA. However, the assignment of the parameters A1 and A2 is arbitrary.

  According to the example shown in FIG. 5, the recording unit 63 further sets the intersection C1 and intersection C2 between the arc A1 and the straight line L0, respectively, as a function Crospoint (A1, Line (L0)) and a function Crospoint (A2, Line ( L0)), parameters C1 and C2 are assigned to the output of each function, and these functions are described in the answer data DA. This description and assignment is optional.

  The function type “Crosspoint” indicates that the type of the created graphic element is an intersection. Specifically, the function Crosspoint (A1, Line (L0)) indicates the intersection C1 between the arc A1 and the straight line L0, and the function Crosspoint (A2, Line (L0)) indicates the intersection C2 between the arc A2 and the straight line L0. Show. Line (L0) refers to the definition information of the straight line L0 included in the initial element definition data D12.

  When the second drawing operation is performed, the recording unit 63 adds the function Arc (C1, r3, θ5, θ6) to the answer data DA as information related to the drawing operation of the arc A3. This function indicates an arc having a radius r3 with the center as the intersection C1, and having an angle range from the angle θ5 to θ6. Similarly, the recording unit 63 adds a function Arc (C2, r4, θ7, θ8) to the answer data DA as information related to the drawing operation of the arc A4. This function is an arc having a radius r4 with the center being the intersection C2, and an arc having an angle range from θ7 to θ8. When the drawing operation corresponding to the correct answer is performed, the radius r3 and the radius r4 have the same value.

  According to the example in which the parameters A1, A2, C1, and C2 are not assigned to the output of the function that represents the preceding drawing operation, the recording unit 63 corresponds the function Arc (C1, r3, θ5, and θ6) to the parameters A1 and C1. Can be described in a nested expression. That is, the function Arc (C1, r3, θ5, θ6) is described as the function Arc (Crosspoint (Arc (Point (P0), r1, θ1, θ2), Line (L0)), r3, θ5, θ6). Can do. Similarly, the function Arc (C2, r4, θ7, θ8) can be described in a nested manner using the functions corresponding to the parameters A2 and C2.

  According to the example shown in FIG. 5, the recording unit 63 further represents the intersection C3 between the arc A3 and the arc A4 by the function Crospoint (A3, A4), and assigns the parameter C3 to the output of this function. The function is described in the answer data DA.

  When the third drawing operation is performed, the recording unit 63 adds a function Line (Point (P0), Point (C3)) to the answer data as information regarding the drawing operation of the straight line L1. The function type “Line” indicates that the type of the created graphic element is a straight line. Specifically, the function Line (Point (P0), Point (C3)) indicates a straight line L1 connecting the point P0 and the intersection C3. According to the example in which the parameters A1, A2, C1, C2, and C3 are not assigned to the output of the function that represents the preceding drawing operation, the recording unit 63 uses the function Line (Point (P0), Point (C3)), Nested expressions can be used using functions corresponding to the parameters A1, A2, C1, C2, and C3. The description of the nested expression for the function Line (Point (P0), Point (C3)) is shown in the left area of FIG. The answer data DA shown in the left area of FIG. 6 indicates a function representing the final drawing operation as a nested expression with the function representing the preceding drawing operation as an argument.

  Thus, the answer data DA created by the recording unit 63 includes drawing information representing details of graphic elements created by each of a plurality of drawing operations in the answering process. Each plotting information takes the form of a function as described above, the type of graphic element is represented by a function type, and the arrangement of graphic elements is represented by a parameter of the function. The arrangement of the graphic elements created on the basis of the graphic elements created by the preceding drawing operation is represented with reference to the drawing information of the graphic elements created by the preceding drawing operation. This arrangement is represented on the basis of the graphic element created by the preceding drawing operation. For example, the function Arc (C2, r4, θ7, θ8) is expressed as an arc centered at the intersection C2, which is a graphic element created by the preceding drawing operation, and the drawing information Crospoint (A2, Line (L0) of the intersection C2 )), And further, through the drawing information of the intersection C2, the drawing information Arc (Point (P0), r2, θ3, θ4) of the arc A2 forming the intersection C2 is referred to.

  Accordingly, the determination unit 65 analyzes the nested structure of the function representing the final drawing operation indicated by the answer data DA, or sequentially refers to the parameters in the function, thereby drawing the drawing procedure by the user in the answering process. The correctness of the answer to the drawing problem can be determined in consideration of this drawing procedure.

  The correct answer definition data D13 can express, for example, the correct answer of the drawing problem in a description format using the same function as the answer data DA. Hereinafter, the description defining the correct answer is expressed as a correct answer definition sentence. The correct answer definition data D13 can specify a parameter unnecessary for determining whether the answer is correct among the parameters in the function defining the correct answer. For the sake of clarity, in the example of the correct answer definition data D13 shown in the right area of FIG. 6, parameters unnecessary for determination are not described.

  The correct answer definition data D13 can describe the condition that the parameter should satisfy for the parameter that satisfies the predetermined condition. According to the example of the correct answer definition data D13 shown in FIG. 6, the function corresponding to the drawing operation for drawing the straight line L1 which is the final drawing operation for the drawing problem shown in FIG. 2 is shown in a nested structure. In the correct answer definition data D13, parameters R1 to R4 corresponding to the parameters r1 to r4 are shown as parameters to be referred to when determining whether or not the answer is correct, and R2 = R1 and R4 = R3. It is shown that.

  The determination unit 65 can determine whether the answer indicated by the answer data DA is correct by comparing the function corresponding to the final drawing operation indicated by the answer data DA with the function indicated by the correct answer definition data D13. If both functions to be compared have the same structure, and the parameter indicated by the answer data DA satisfies the condition indicated by the correct answer definition data D13, the determination unit 65 determines that the answer is a correct answer. Otherwise, It can be determined that the answer is an incorrect answer.

  According to the present embodiment, in the answer data DA, the relationship between the graphic elements is appropriately and concisely expressed by the above-described description method. Therefore, the determination unit 65 determines whether the answer by the user is correct or not. And the correct answer definition data D13.

  For example, according to the drawing problem shown in FIG. 2, the straight line L1 drawn by the drawing operation shown in FIG. 7 is also a correct answer. According to this example, as shown in FIG. 5, the intersection C3 is not on the opposite side of the point P0 across the straight line L0, but on the same side. Thus, the coordinates of the intersection C3 vary greatly depending on the user's answer method.

  However, even for answers with different arrangements of the intersections C3, the function indicated by the answer data DA is such that the values of the parameters r3, r4, θ5 to θ8 are different. That is, there is no difference in the nested structure of functions. As described above, according to the present embodiment, even if the user makes various answers, the determination unit 65 considers whether the answer is correct or not based on the comparison between the answer data DA and the correct answer definition data D13. Therefore, it can be determined appropriately and easily.

  In particular, according to the present embodiment, the correctness of the answer is determined by referring to the function corresponding to the final drawing operation indicated by the answer data, so that the user is influenced by the drawing not related to the answer performed in the answering process. Therefore, it is possible to correctly determine whether the answer is correct.

  Further, when the user draws the straight line L1 shown in FIG. 2 sensuously without a correct procedure, even if the straight line L1 is a correct vertical line, the answer data is as shown in the left area of FIG. , The arc, and the information about the intersection of the arc and the straight line are not included, and the nested structure of the function does not match the nested structure of the correct answer. Therefore, the determination unit 65 can appropriately determine such a drawing without the correct procedure as an incorrect answer. That is, when the graphic element to be created by a series of drawing operations is not created by the series of drawing operations, the determination unit 65 can appropriately determine the answer to the drawing problem as an incorrect answer.

  In addition, the correct answer definition data D13 for the drawing problem shown in FIG. 2 is simply expressed by, for example, a function P_line (Point (P0), Line (L0)) representing a vertical bisector passing through the point P0 and the line L0. obtain. In this case, the determination unit 65 expands the function P_line (Point (P0), Line (L0)) indicated by the correct answer definition data D13 into a function having a nested structure shown in the right area of FIG. It can be determined whether the answer is correct or not.

  As another example, the determination unit 65 may be configured to refer to a determination rule for each function prepared in advance and determine whether the answer indicated by the answer data is correct according to the determination rule according to the function indicated by the correct answer definition data D13. Good. The determination rule for each function can be stored in the storage device 20.

  Further, depending on the type of drawing problem, there are a plurality of correct answers with different drawing procedures, and these may not be described in a common correct answer definition sentence. For this reason, the correct answer definition data D13 may store a correct answer definition sentence for each correct answer. FIG. 4 shows an example of correct answer definition data D13 having three correct answer definition sentences.

  The drawing problem of drawing the bisector of the sector OEF shown in FIG. 3 is as shown in FIG. 8A. The arc C11 having an arbitrary radius with the point O as the center and the intersection C11 of the line OE with the point 0 as the center. An intersection C12 of the arc A12 having the same radius as the arc A11 and the line segment OF is drawn, and arcs A13 and A14 having the same radius centered on the intersections C11 and C12 are drawn, and the arc A13 and the arc A14 are drawn. A correct answer can be obtained by drawing a straight line L11 connecting the intersection C13 and the point O (first correct answer example).

  In addition, as shown in FIG. 8B, this drawing problem draws arcs A21 and A22 having the same radius centered around each of the points E and F, and an intersection C21 and a point O between the arc A21 and the arc A22 are drawn. A correct answer can be obtained by drawing the connecting straight line L21 (second correct answer example).

  Further, as shown in FIG. 8C, the drawing problem is that a straight line L31 passing through the points E and F is drawn, an arc C31 having an arbitrary radius with the center as a point O and an intersection C31 between the straight line L31 and the center as a point O. The intersection C32 of the arc A32 having the same radius as the arc A31 and the straight line L31 is drawn, and arcs A33 and A34 having the same radius centered on the intersections C31 and C32 are drawn. A correct answer can be obtained by drawing a straight line L32 connecting the intersection C33 and the point O (third correct answer example).

  By storing the correct answer definition sentence for each correct answer in the correct answer definition data D13 for the drawing problem having a plurality of correct answers in which the correct answer cannot be defined with the common correct answer definition sentence, the determination unit 65 can perform various solutions. It is possible to appropriately determine whether the answer to the drawing problem that the user has is correct.

  Specifically, the determination unit 65 can execute the determination process shown in FIG. 9 to determine whether the answer indicated by the answer data is correct. When the determination process shown in FIG. 9 is started, the determination unit 65 refers to the correct answer definition data D13 of the corresponding question (S110), and determines whether or not a plurality of correct answers are defined in the correct answer definition data D13 ( S120). When a plurality of correct answers are defined (Yes in S120), the determination unit 65 selects a correct answer definition sentence to be compared with the answer indicated by the answer data from the correct answer definition sentences defined in the correct answer definition data D13. After selecting one (S130), the process proceeds to S150. If a plurality of correct answers are not defined (No in S120), the determination unit 65 proceeds to S150.

  In S150, the determination unit 65 compares the correct answer definition sentence selected in S130 or the only correct answer definition sentence with the function representing the final drawing operation in the answer data, and the function representing the final drawing operation in the answer data is: It is determined whether or not the function has a nested structure and parameters represented by the correct answer definition sentence. Thereby, the determination unit 65 determines whether or not the answer indicated by the answer data matches the definition of the correct answer indicated by the correct answer definition sentence (S160). If they match (Yes in S160), the determination unit 65 determines that the user's answer indicated by the answer data is a correct answer (S190), and ends the determination process (S190).

  On the other hand, if the determination unit 65 determines that the answer indicated by the answer data does not match the definition of the correct answer indicated by the correct answer definition sentence (No in S160), the determination unit 65 determines whether there is an uncompared correct answer definition sentence ( S170).

  When there is an uncompared correct answer definition sentence (Yes in S170), the determination unit 65 proceeds to S130, selects one of the uncompared correct answer definition sentences as a comparison target, and executes the processes after S150. Thus, when the answer indicated by the answer data does not match the definition of the correct answer indicated by the correct answer definition sentence, the determination unit 65 refers to another correct answer definition sentence and the answer matches the definition of the correct answer. Determine whether or not.

  If the answer indicated by the answer data does not match any of the correct answer definitions indicated by the correct answer definition data D13 (No in S170), the determination unit 65 determines that the user's answer indicated by the answer data is an incorrect answer. In step S180, the determination process ends.

  When the question answering unit 61 determines whether the answer of the user is correct or not by the operation of the determination unit 65, the answering unit 61 displays the display device 40 so that the correctness of the answer is displayed in the drawing area R1 according to the determination result. Control. Thereafter, the questioning unit 61 issues the next question. In this way, the questioning unit 61 repeatedly executes the processes related to the questioning of the drawing problem, the reception of the answer, and the display of whether the answer is correct.

  As described above, the learning terminal 1 of the present embodiment can appropriately determine whether or not the answer to the drawing problem is correct in consideration of the answer process. In particular, the learning terminal 1 records information on a plurality of drawing operations by the user through the input device 50 in the answer data so that the user's drawing procedure can be specified when determining whether the answer is correct. Further, in the answer data, the drawing information related to the graphic element created based on the graphic element created by the preceding drawing operation is associated with the drawing information of the graphic element created by the preceding drawing operation, and the preceding drawing is drawn. It is recorded as information representing the relationship with the graphic element created by the operation. Similarly, drawing information related to a graphic element created based on the initial graphic element among a plurality of drawing operations is recorded as information representing the relationship with the initial graphic element.

  Therefore, according to the present embodiment, the drawing procedure in the user's answering process is easier and more accurate than when the points and lines drawn by the user's drawing operation are recorded using the pixel coordinates on the display device 40. Can be determined.

It goes without saying that the present disclosure is not limited to the exemplary embodiments described above, and can take various forms.
In the above, the drawing problem of the perpendicular line and the bisector has been exemplified as the drawing problem. However, the drawing problem includes a drawing problem related to a graph such as an inverse proportional graph or a problem of creating a quadratic function graph. Further, the drawing problem includes any drawing problem that is given in primary, secondary and higher education. The drawing problem may be a drawing problem presented in another specialized field.

  For a graph drawing problem, a function of snapping or adsorbing graphic elements such as points and lines to grid lines can be provided. A function of alleviating or correcting line distortion caused by handwriting can also be provided. These functions facilitate drawing by the user, but excessive functions may positively correct the user's erroneous drawing operation in the correct direction. Therefore, when the user's drawing operation deviates significantly from the correct drawing operation, the above function may be designed to correct the drawing operation in a direction away from the correct drawing operation corresponding to the direction of occurrence of the shift. A function for correcting a deviation or distortion unintended by the user that may occur in a drawing operation by handwriting using a finger or an electronic pen is not limited to a graph drawing problem, and can be similarly provided for other drawing problems. .

  In addition, at least a part of the functions of the learning terminal 1 according to the present embodiment may be realized by the server device 100. The server apparatus 100 can provide at least a part of the functions of the learning terminal 1 to the user as an ASP. In this case, the server apparatus 100 can function as the questioning unit 61, the recording unit 63, and the determination unit 65 by executing the program. That is, the server apparatus 100 uses the display device 40 and the input device 50 included in the learning terminal 1 to give a drawing question, record the answer data in response to a drawing operation from the user, and determine whether the answer is correct. Can do.

  In addition, a program for causing the CPU 11 to realize the function related to the learning terminal 1 can be recorded on a recording medium in any form readable by a computer. For example, the program can be recorded on a recording medium such as a portable optical disk, a magnetic disk, or a semiconductor memory and provided to the user. The program may be provided through a telecommunication line.

  In addition, the function of one component in the above embodiment may be distributed among a plurality of components. Functions of a plurality of components may be integrated into one component. A part of the configuration of the above embodiment may be omitted. At least a part of the configuration of the embodiment may be added to or replaced with the configuration of the other embodiment. Any aspect included in the technical idea specified from the wording of the claims is an embodiment of the present disclosure.

DESCRIPTION OF SYMBOLS 1 ... Learning terminal, 10 ... Arithmetic device, 11 ... CPU, 13 ... RAM, 20 ... Storage device, 30 ... Communication device, 40 ... Display device, 50 ... Input device, 61 ... Questioning unit, 63 ... Recording unit, 65 ... Judgment unit, 100 ... server device, D1 ... question data, D11 ... question image data, D12 ... initial element definition data, D13 ... correct answer definition data, DA ... answer data, G0 ... question screen, G1 ... drawing area, G2 ... tool region.

Claims (9)

A system for determining whether or not an answer to a drawing question is given through a display device.
A recording unit configured to record, as answer data, information related to a plurality of drawing operations performed in stages until the user answers the drawing problem using an input device;
A determination unit configured to determine a drawing procedure by the user when answering the drawing question based on the answer data recorded by the recording unit, and to determine whether the answer to the drawing question is correct;
With
The plurality of drawing operations are performed by a user operating a plurality of drawing tools prepared in advance,
The graphic element created by each of the plurality of drawing tools is defined by a different parameter group for each drawing tool, and the parameter group takes a value according to the operation of the user,
The determination unit determines a drawing procedure by the user based on a use order of the drawing tool and the parameter group that defines the created graphic element, and determines whether or not an answer to the drawing problem is correct . A system for determining whether or not an answer to a drawing question is given through a display device.
A recording unit configured to record, as answer data, information related to a plurality of drawing operations performed in stages until the user answers the drawing problem using an input device;
A determination unit configured to determine a drawing procedure by the user when answering the drawing question based on the answer data recorded by the recording unit, and to determine whether the answer to the drawing question is correct;
With
The answer data includes drawing information representing details of a graphic element created by each of the plurality of drawing operations,
The recording unit is configured to store the drawing information related to a graphic element created on the basis of a graphic element created by a preceding drawing operation among the plurality of drawing operations, and the graphic element created by the preceding drawing operation. A determination system for recording as information representing a relationship with a graphic element created by the preceding drawing operation in association with drawing information. The drawing information includes type information indicating the type of the created graphic element and arrangement information indicating the arrangement of the graphic element, and the graphic created based on the graphic element created by the preceding drawing operation The element arrangement information is associated with the drawing information of the graphic element created by the preceding drawing operation, and is recorded as information representing an arrangement based on the graphic element created by the preceding drawing operation. The determination system according to claim 2 . The answer data has a nested structure in which the drawing information related to the graphic element created based on the graphic element created by the preceding drawing operation includes the drawing information of the graphic element created by the preceding drawing operation. The determination system according to claim 2 or 3 , wherein the determination system has the data. The determination unit analyzes the drawing information of the graphic element created by the drawing operation at the final stage among the plurality of drawing operations, and the drawing procedure by the user by analyzing the nested structure in the drawing information. The determination system according to claim 4 , wherein the determination system is configured to determine and determine whether the answer to the drawing problem is correct. The drawing problem includes an initial graphic element that is a graphic element that constitutes the drawing problem and is displayed on the display device when a question is given,
The recording unit, among the plurality of drawing operations, the drawing information about the graphic elements created based on the initial graphic elements, claims 2 to be recorded as information representing the relationship between the initial graphic element 5 determination system according to one of. The program for functioning a computer as the said recording unit with which the determination system as described in any one of Claims 1-6 is provided, and the said determination unit. A method for determining the correctness of an answer to a drawing question presented through a display device,
A storage device that stores, as answer data, information related to a plurality of drawing operations performed by the computer in stages until the user answers the drawing problem using an input device integrated with or attached to the display device. Recording in
A computer determines a drawing procedure by the user when answering the drawing question based on the answer data recorded in the storage device, and determines whether the answer to the drawing question is correct;
Including
The plurality of drawing operations are performed by a user operating a plurality of drawing tools prepared in advance,
The graphic element created by each of the plurality of drawing tools is defined by a different parameter group for each drawing tool, and the parameter group takes a value according to the operation of the user,
The determining includes determining a drawing procedure by the user based on a use order of the drawing tool and the parameter group defining the created graphic element, and determining whether the answer to the drawing problem is correct or not. A determination method including A method for determining the correctness of an answer to a drawing question presented through a display device,
A storage device that stores, as answer data, information related to a plurality of drawing operations performed by the computer in stages until the user answers the drawing problem using an input device integrated with or attached to the display device. Recording in
A computer determines a drawing procedure by the user when answering the drawing question based on the answer data recorded in the storage device, and determines whether the answer to the drawing question is correct;
Including
The answer data includes drawing information representing details of a graphic element created by each of the plurality of drawing operations,
In the recording, the drawing information on the graphic element created based on the graphic element created by the preceding drawing operation among the plurality of drawing operations is stored in the graphic element created by the preceding drawing operation. A determination method including recording as information representing a relationship with the graphic element created by the preceding drawing operation in association with the drawing information.

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