SU758229A1 - Pupil examining device - Google Patents

Description

The invention relates to the field of automation and computing, in particular to the technical means of training, and can be used in the organization of programmed training in various educational institutions.

There are known devices for teaching and controlling students' knowledge, which contain blocks for presenting information, controlling information input, evaluating and indicating gi and

However, these devices have a limited accuracy of knowledge control due to the impossibility of. Assessing the level of knowledge on many indicators (correct answers, response time, etc.). ·

The closest technical solution to the invention is a device that allows you to control the level of training of the student, containing the information output unit, logic unit, input unit, display unit, as well as the unit for calculating the cross-correlation of questions and correct answers and evaluation unit £ s].

However, this device has several disadvantages. First, this

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the device allows you to determine only the correctness of the solution of the problem, which * characterizes the level of training 5 on one side only. Characteristics such as time and accuracy of the solution of the problem using this device can not be monitored. Secondly, the influence of the choice of the extension of the survey continuation zone on the reliability of control is great. So, for example, with a small width of the survey continuation zone, random factors influence the accuracy of the control, and 15 with a large zone width, it is not possible to correctly assess the level of training during long-term monitoring results in this zone.

The aim of the present invention is to improve the accuracy of monitoring the level of training of the student with a minimum amount of information memorized in the process of monitoring.

25 This goal is achieved by the fact that the device containing the information presentation unit connected to the control unit connected to the display unit and the information input unit and the evaluation unit are entered

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the coincidence unit and the successively included control unit for stabilization of training parameters, the calculator of characteristics of the educational process and the recorder connected to the information input unit and the control unit connected directly to the calculator of characteristics of the educational process, and through the block of coincidence with the control unit of stabilization of training parameters connected to the assessment unit , moreover, the calculator of the characteristics of the educational process contains blocks for setting coefficients, connected through the appropriate multiplication blocks to adder, and the control unit, the stabilization of learning parameters contains a subtraction node connected to the registers connected to the key, and the comparison node / connected to the subtraction node, the key and the adder.

Monitoring the level of training is carried out according to the values of the statistical characteristics of the accuracy, accuracy and time of solving the problem by the student. The final assessment of the level of student training is carried out after stabilization of statistical characteristics in all channels.

FIG. 1 shows a functional diagram of the proposed device; in fig. 2 is a block diagram of a computing unit and a stabilization unit.

The device for monitoring students' knowledge contains an information presentation unit 1, a control unit 2, an information input unit 3, a display unit 4, a registration unit 5 (recorder), a calculator 6 of the characteristics of the educational process, a unit for monitoring the stabilization of training parameters, an evaluation unit 8, a unit 9 matches. The calculator 6 contains blocks 10 and 11 for specifying the coefficients, blocks 12 and 13 multiplications, and adder 14. Block 7 contains a register 15 ,. subtraction node 16, register 17, comparison node 18, counter 19 and key 20.

Recorder · 5 is designed to register monitored parameters: correctness, accuracy, and time to solve a problem by a student. It consists of a counter of correct answers, a counter of time spent on solving a problem, and a register of a parameter characterizing the accuracy of solving a problem (not shown in the drawing).

All control channels are identical, therefore we will describe the work of one control channel, for example, time control. · / Of performing the task for the subjects.

Block 1 is launched by a command from block 2. Information is presented to the operator who, using block 3, enters the solution to the problem displayed on block 4. The time spent on solving the problem is recorded by the time counter of the recorder 5. in the calculator 6, the mathematical waiting time to solve the problem.

The calculation of the statistical characteristics of a certain dependence allows you to remember in the control process only the value of the statistical characteristics calculated at the previous step, and not all the values of the monitored parameter for all tasks .. ·

The calculated value of the mathematical expectation goes to block 7 to check the stabilization of the statistical characteristic value.

From the output of block 7 to the input of block 8 comes., A signal equal to the value of the expectation memorized by the results of the stabilization check of the statistical characteristic value, and to the input of block 9 a signal if the value of the statistical characteristic has stabilized. The characteristic is considered stabilized if the deviations of three consecutive values of this characteristic from the value of this characteristic, which was memorized the last time according to the results of the verification of stabilization of the value of this characteristic, do not exceed the permissible value in absolute value.

. The calculation and verification of the stabilization of the value of a statistical characteristic occurs as follows.

The input of blocks 10 and 11 receives a signal equal to the sequence number of the current task. In these blocks, certain coefficients are determined, and the results are fed to multiplication blocks 12 and 13, respectively.

In this case, the second input of block 12 receives a signal equal to the current value of the monitored parameter from block 5 of registration. The second input of block 13 receives a signal equal to the value of the statistical characteristic calculated in the previous step, from block 7. The outputs of blocks 12 and 13 are connected to the adder 14, where a new value of the statistical characteristic is determined, the newly calculated value of the statistical characteristic comes from the adder 14 to input register 15. Thereafter, in the subtraction node 16, the absolute value of the difference between the values of the newly calculated characteristic nd stored in the memory register 17 is calculated. A signal equal to the difference of the characteristics enters zel comparison 18. If this difference does not exceed the Value on the signal is produced, which increases

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counter 19 value per unit> Otherwise, counter 19 is reset and from node 18 a command is received to rewrite the contents of input register 15 to register 17 via key 20. '5

The contents of the input register 15 is retained until a newly calculated value of the statistical characteristic up to the TIKI arrives at its input.

The output of the counter 19 produces a signal in the event that it receives three signals in a row from the node 18 comparison. The signal from the counter ... 19 says that the ¹³ statistical characteristic has stabilized.

In the case when the characteristics in all three channels are stabilized, from the outputs of the counters 19 20

all three channels, signals arrive at block 9, from the output of which the signal at the end of the test enters control unit 2.

Thus, an increase of 25

the ability to control the level of training of the student is achieved by

the use of statistical characteristics of the quality of the solution, the tasks of the students together of the two alternative 30

ratings; by eliminating the influence of random factors on the reliability of control of the level of training due to the final assessment of the level of training after stabilization 35

controlled statistical characteristics.

In addition, this device allows defining scientifically justified standards for time, accuracy and correctness of problem solving for various levels of preparedness of trained operators.

The use of the proposed device allows the use of moments of any order as statistical characteristics, since

moment can be determined sequentially.

Claims (3)

Claim 1. A device for monitoring students' knowledge, containing an information presentation unit connected to a control unit connected to an indication unit and an information input unit, and an evaluation unit, characterized in that, in order to improve the accuracy of control, it contains a coincidence unit and a series-connected unit control of the stabilization of learning parameters, the calculator of the characteristics of the educational process and the recorder connected to the information input unit and the control unit connected directly to the calculator of the characteristics of the educational th process, and by block matching - a control unit stabilization learning parameters, connected to the evaluation unit. 2. The device according to claim 1, in which case the calculator of the characteristics of the educational process contains blocks for setting the coefficients connected through the appropriate multiplication blocks to the adder. - 3. The device is pop, 1, about the t of l and ate with the fact that in it the unit for controlling the stabilization of learning parameters contains a subtraction node connected to the registers connected to the key and a comparison node connected to the subtraction node of the key and adder.