CN111583762A

CN111583762A - Slope visual teaching device for calculus teaching

Info

Publication number: CN111583762A
Application number: CN202010548996.5A
Authority: CN
Inventors: 万龙; 黄晓莉; 李德生
Original assignee: Jiangxi University of Finance and Economics
Current assignee: Jiangxi University of Finance and Economics
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-08-25

Abstract

The invention relates to the technical field of calculus slope teaching, and discloses a slope visual teaching device for calculus teaching, which comprises: the mainboard is the magnetic sheet, and have a plurality of the same square grids on the mainboard, lid and mainboard lock mutually, first standing groove is located in the cavity, the curve can be dismantled to be connected in first standing groove, the cavity is located to the second standing groove, the drum can be dismantled to be connected in the second standing groove, the drum is inside hollow casing, a side of drum is opened there is the through-hole, the inside central point of drum puts and is equipped with the rotation axis, the rotation axis is rotatory around its axis, the elastic component is around establishing with the periphery of rotation axis, the second end of elastic component links firmly with the first end of patchcord, the second end of patchcord passes the through-hole and extends the outer wall of drum, the second end of patchcord has linked firmly the baffle, the link links firmly in the lid and keeps away from a side of mainboard, be used. The device of the invention can lead students to visually see the slope change of the curve, thereby increasing the interest.

Description

Slope visual teaching device for calculus teaching

Technical Field

The invention relates to the technical field of calculus slope teaching, in particular to a slope visualization teaching device for calculus teaching.

Background

In the calculus teaching process, a teacher often needs to explain the change of the slope of a curve, the slope is represented by manually drawing the curve on a blackboard and then drawing a tangent line in the traditional mode, but the representation method is always dull, the difficulty of manual drawing of the teacher is high, the visual impact force is insufficient, and students also feel uninteresting.

Disclosure of Invention

The invention provides a slope visualization teaching device for calculus teaching, and aims to provide an interesting slope visualization teaching device.

The invention provides a slope visualization teaching device for calculus teaching, which comprises:

the main board is a magnetic board, and one surface of the main board is provided with a plurality of identical square grids;

the upper end surface of the cover body is hinged with the lower end surface of the main board, and the cover body covers the main board;

the first placing groove is arranged on the inner side of the cover body;

the curve is detachably connected in the first placing groove and is formed by sequentially hinging a plurality of bendable soft strips, the length of the bendable soft strips is shorter than that of the first placing groove, and magnetic sheets are respectively fixed at two ends of the bendable soft strips;

the second placing groove is arranged on the inner side of the cover body;

the drum, the drum can be dismantled and connect in the second standing groove, the drum is inside hollow casing, a side of drum is opened there is the through-hole, the inside central point of drum puts and is equipped with the rotation axis, the rotation axis is rotatory around its axis, the first end of elastic component is fixed in on the rotation axis, the elastic component is many circles around locating on the periphery of rotation axis, the second end of elastic component links firmly with the first end of patchcord, the second end of patchcord passes the outer wall that the through-hole extends the drum, the second end of patchcord has linked firmly the baffle, the external dimension of baffle is greater than the external dimension of through-hole, the outside at the drum can be dismantled to the baffle, baffle and drum.

Optionally, the portable electronic device further comprises a third placing groove, the third placing groove is arranged on the inner side of the cover body, and an angle measurer is detachably connected in the third placing groove.

Optionally, the method further includes:

the keys are ten, different numerical values are written on the keys respectively, the keys are made of transparent materials, lamp beads are fixed inside the keys, and the keys are arranged at the position, close to one side edge, of the main board;

the microprocessor is arranged on the inner side of the cover body, and the keys are electrically connected with the microprocessor and used for receiving numerical value information sent by the keys;

the loudspeaker is arranged on the inner side of the cover body and is electrically connected with the microprocessor and used for receiving numerical value information sent by the microprocessor and synchronously broadcasting the numerical value information;

the battery is arranged in the mainboard and is respectively and electrically connected with the keys, the microprocessor, the lamp beads and the loudspeaker;

when the user pressed different buttons, the inside lamp pearl of button was lighted, and microprocessor received the numerical value information that the button sent and sent for the megaphone, and the megaphone broadcasts the numerical value received.

Optionally, the cover further comprises a handle, and the handle is fixed on one side of the main board far away from the cover body.

Optionally, an elastic band is further disposed on the first placement groove.

Optionally, the blackboard eraser further comprises a hanging ring, wherein the hanging ring is fixedly connected to one side edge of the cover body far away from the main board and used for hanging the blackboard eraser on a blackboard.

Compared with the prior art, the invention has the beneficial effects that:

the magnetic main board can absorb a curve on the main board, the curve can be bent at any angle through the designed curve formed by the plurality of bendable soft strips, a teacher can fix the curve in different grids in a sectional mode through the grids to show the curves with different curvatures, the tangent line of the curve is shown through pulling out the soft strip in the wire coil, and the soft strip is fixed on the main board through the wire coil and the magnetic strip outside the baffle plate, so that students can visually see the slope change of the curve, and the interestingness is increased.

Drawings

Fig. 1 is a schematic structural diagram of a slope visualization teaching apparatus for calculus teaching according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of the internal structure of a wire coil provided by an embodiment of the invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at G;

fig. 4 is a usage state diagram of a slope visualization teaching device for calculus teaching according to an embodiment of the present invention.

Description of reference numerals:

1-main board, 101-square grid, 2-cover, 3-first placing groove, 4-curve, 41-bendable soft strip, 42-magnetic sheet, 5-second placing groove, 6-wire coil, 61-through hole, 62-rotating shaft, 63-elastic piece, 64-flexible wire, 65-baffle, 8-third placing groove, 9-angle measurer, 10-button, 11-microprocessor, 12-loudspeaker, 13-suspension loop, 14-handle, 15-elastic band, 16-lock catch and 17-elastic card.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 4, an example of the slope visualization teaching apparatus for calculus teaching provided in the present invention includes: mainboard 1, cover 2, first standing groove 3, curve 4, second standing groove 5, wire coil 6, mainboard 1 is magnetic plate, and one side of mainboard 1 has a plurality of same square grids 101, the up end of cover 2 is hinged with the lower terminal surface of mainboard 1, cover 2 covers on mainboard 1, first standing groove 3 is arranged inside cover 2, curve 4 is detachably connected in first standing groove 3, curve 4 is formed by a plurality of bendable soft strips 41 which are hinged in sequence, the length of bendable soft strips 41 is shorter than that of first standing groove 3, magnetic sheets 42 are respectively fixed at two ends of bendable soft strips 41, second standing groove 5 is arranged inside cover 2, wire coil 6 is detachably connected in second standing groove 5, wire coil 6 is hollow shell, one side of wire coil 6 is opened with through hole 61, rotation shaft 62 is arranged at the inner center position of wire coil 6, rotation shaft 62 rotates around the axis thereof, on the rotation axis 62 is fixed in to the first end of elastic component 63, elastic component 63 is many circles around locating the periphery of rotation axis 62, the second end of elastic component 63 links firmly with the first end of patchcord 64, the second end of patchcord 64 passes through-hole 61 and extends the outer wall of drum 6, the second end of patchcord 64 has linked firmly baffle 65, the external dimension of baffle 65 is greater than the external dimension of through-hole 61, baffle 65 can dismantle the outside of connecting at drum 6, baffle 65 and drum 6 surface all are fixed with the magnetic stripe.

In this embodiment, the soft strip 41 of can buckling can be soft iron wire, curve 4 is many, can draw many curves simultaneously, patchcord 64 can be soft metal like iron wire copper wire etc., and its length is not shorter than curve 4's length, mainboard 1 and lid 2 pass through 16 locks of hasp, can dismantle the mode of connection and fix the one end of elasticity card 17 in the standing groove, the other end is open, thereby realize the chucking, but the central point of drum 6 puts a vertically fixed cylinder 66, rotation axis 62 cup joints and realizes rotatoryly in the cylinder periphery, elastic component 63 can be spring or stretch cord.

The use method and the working principle are as follows: firstly, the teacher opens the mainboard 1 and the cover body 2, takes out the curve 4 and the wire coil 6 from the respective placing grooves, then buckles the mainboard 1 and the cover body 2 reversely, a rotating shaft can be arranged at the hinged position of the mainboard 1 and the cover body 2, so that the mainboard 1 and the cover body 2 can be buckled in a forward direction or in a reverse direction, the mainboard 1 faces to the outer side, the cover body 2 faces to the inner side and is jointed with the blackboard, when the teacher needs to draw the curve, the curve 4 is taken out from the first placing groove 3, each bendable soft strip 41 is sequentially placed in different square grids 101, simultaneously the curve 4 can be presented as the curve by adjusting the radian of each bendable soft strip 41, the magnetic sheet 42 can fix the bendable soft strip 41 on the mainboard 1, the wire coil 6 is taken out from the second placing groove 5, then the soft strip 64 is pulled out of the wire coil 6 to be arranged along the tangent line at the required position, and then the magnetic strips on the wire coil 6 and the baffle 65 are fixed, through fixing drum 6 in different positions, the expression of different curvatures has been realized to make the student can audio-visually see the change of curvatures, increase the interest of study, simultaneously owing to with

lid

2 and 1 reverse phase lock of mainboard, show only mainboard 1 on the blackboard, the area of blackboard can not be occupied to lid 2, makes things convenient for the teacher to carry out the blackboard-writing on the blackboard, and the back of finishing using, patchcord 64 is under the effect of elastic component 63, and the winding is on rotation axis 62.

Specifically, the utility model further comprises a third placing groove 8, the third placing groove 8 is arranged inside the cover body 2, an angle measuring device 9 is detachably connected in the third placing groove 8, and the angle measuring device 9 is used for measuring the inclination angles of different cords 64.

The slope visualization teaching device for calculus teaching provided by the embodiment of the invention further comprises: the electronic device comprises a key 10, a microprocessor 11, a loudspeaker 12 and a battery, wherein ten keys 10 are provided, the keys 10 are respectively written with different numerical values of 0-9, the key 10 is made of transparent materials, lamp beads are fixed inside the key 10, the key 10 is arranged at a position close to one side edge of a mainboard 1, the microprocessor 11 is arranged in a cavity 21, the key 10 is electrically connected with the microprocessor 11 and used for receiving numerical information sent by the key 10, the loudspeaker 12 is arranged in the cavity 21 and electrically connected with the microprocessor 11 and used for receiving the numerical information sent by the microprocessor 11 and synchronously broadcasting the numerical information, the battery is arranged inside the mainboard 1, the battery is respectively electrically connected with the key 10, the microprocessor 11, the lamp beads and the loudspeaker 12, when a user presses different keys 10, the lamp beads inside the key 10 are lightened, and the microprocessor 11 receives the numerical information sent by the key 10 and sends the, the microphone 12 broadcasts the received value.

The use method and the working principle are as follows: when the angle was measured to protractor 9 for the teacher, if measure the angle and be 53 degrees, the teacher pressed the button 10 that digit 5 and digit 3 correspond in proper order, the lamp pearl in the button 10 that is pressed is in proper order lighted, the student can see the bright lamp, microprocessor 11 receives the number information that button 10 sent and gives megaphone 12 simultaneously, megaphone 12 reports received numerical value 53, thereby make the student can receive the angle value that the curve shows through vision and sense of hearing synchronization, deepen student's impression, the interest of teaching has also been improved.

Optionally, still include handle 14, handle 14 is fixed in mainboard 1 and keeps away from a side of lid 2, handle 14 makes things convenient for the teacher to go to the classroom with carrying device when going on class, can also place other article such as the teaching material that the teacher needed on class in this device cavity 21 simultaneously, and the device has realized accomodating of all articles of teacher, and because the device seals when mainboard 1 and the 2 lock of lid, inside material also can not drop out, can also play dustproof effect.

Optionally, an elastic band 15 is further disposed on the first placement groove 3 for fixing the curve 4 in the first placement groove 3.

Specifically, the blackboard eraser further comprises a hanging ring 13, the hanging ring 13 is U-shaped, one open end of the U-shaped hanging ring 13 is fixedly connected with the lower edge of the back face of the cover body 2, when the mainboard 1 and the cover body 2 are reversely buckled, the opening of the U-shaped hanging ring 13 faces downwards, the blackboard eraser is hung on a blackboard through the U-shaped hanging ring 13, and even if a hanging nail is not designed on the blackboard, the U-shaped hanging ring 13 can be clamped into the upper edge of the blackboard to enable the blackboard eraser to be hung on the blackboard.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. The utility model provides a visual teaching device of slope for calculus teaching which characterized in that includes:

the magnetic power supply comprises a main board (1), wherein the main board (1) is a magnetic board, and one surface of the main board (1) is provided with a plurality of identical square grids (101);

the upper end face of the cover body (2) is hinged with the lower end face of the main board (1), and the cover body (2) covers the main board (1) so as to accommodate the square grid (101) in the cover body (2) and the main board (1);

a first placement groove (3), wherein the first placement groove (3) is arranged on the inner side of the cover body (2);

the curve (4) is detachably connected into the first placing groove (3), the curve (4) is formed by sequentially hinging a plurality of bendable soft strips (41), the length of each bendable soft strip (41) is shorter than that of the first placing groove (3), and magnetic sheets (42) are respectively fixed at two ends of each bendable soft strip (41);

a second placement groove (5), wherein the second placement groove (5) is arranged on the inner side of the cover body (2);

the wire coil (6) is detachably connected into the second placing groove (5), the wire coil (6) is a hollow shell, a through hole (61) is formed in one side of the wire coil (6), a rotating shaft (62) is arranged in the center of the interior of the wire coil (6), the rotating shaft (62) rotates around the axis of the rotating shaft, a first end of an elastic piece (63) is fixed on the rotating shaft (62), the elastic piece (63) is wound on the periphery of the rotating shaft (62) for multiple circles, a second end of the elastic piece (63) is fixedly connected with a first end of a flexible wire (64), a second end of the flexible wire (64) penetrates through the through hole (61) and extends out of the outer wall of the wire coil (6), a baffle plate (65) is fixedly connected to the second end of the flexible wire (64), and the outer size of the baffle plate (65) is larger than that of the through hole (61), baffle (65) can be dismantled and connect in the outside of drum (6), baffle (65) and drum (6) surface all are fixed with the magnetic stripe.

2. The slope visualization teaching apparatus for calculus teaching as claimed in claim 1, further comprising a third placement groove (8), wherein the third placement groove (8) is provided inside the lid body (2), and an angle measuring device (9) is detachably connected inside the third placement groove (8).

3. The slope visualization teaching apparatus for calculus teaching of claim 1, further comprising:

the lamp beads are fixed inside the keys (10), and the keys (10) are arranged at a position, close to one side edge, of the main board (1);

the microprocessor (11), the said microprocessor (11) locates the inboard of the said body of the cover (2), the said key set (10) is connected with electrical behavior of the microprocessor (11), in order to receive the numerical value information that the key set (10) sends;

the loudspeaker (12) is arranged on the inner side of the cover body (2), and the loudspeaker (12) is electrically connected with the microprocessor (11) and used for receiving numerical value information sent by the microprocessor (11) and synchronously broadcasting the numerical value information;

the battery is arranged inside the main board (1) and is electrically connected with the key (10), the microprocessor (11), the lamp bead and the loudspeaker (12) respectively;

when the user presses different button (10), the lamp pearl of button (10) inside lights, and microprocessor (11) receive the numerical value information that button (10) sent and send megaphone (12), and megaphone (12) are reported the numerical value received.

4. The slope visualization teaching device for calculus teaching as claimed in claim 1, further comprising a handle (14), wherein the handle (14) is fixed to a side of the main board (1) away from the cover (2).

5. The slope visualization teaching device for calculus teaching as claimed in claim 1, wherein an elastic band (15) is further provided on the first placement groove (3).

6. The slope visualization teaching device for calculus teaching as claimed in claim 1, further comprising a hanging ring (13), wherein the hanging ring (13) is fixedly connected to a side of the cover (2) away from the main board (1) for hanging the device on a blackboard.