CN204257058U - Plus and minus calculation demonstration teaching aid - Google Patents
Plus and minus calculation demonstration teaching aid Download PDFInfo
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- CN204257058U CN204257058U CN201420792961.6U CN201420792961U CN204257058U CN 204257058 U CN204257058 U CN 204257058U CN 201420792961 U CN201420792961 U CN 201420792961U CN 204257058 U CN204257058 U CN 204257058U
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Abstract
The utility model discloses a kind of plus and minus calculation demonstration teaching aid, comprise demonstration board, demonstration board offers shifting chute and demonstration groove, demonstration groove is multiple, and be provided with demonstration pearl in shifting chute and demonstration groove, demonstration pearl is provided with multiple; Be provided with back up pad bottom demonstration board, be installed in box portion bottom wall bottom back up pad, the sidepiece of box body is provided with between demonstration board and box portion bottom wall can the drawer of pull.The utility model can be vivid demonstration plus-minus method, make Students ' Learning signed magnitude arithmetic(al) very clear, concrete image, interesting, student is entered among happy study naturally, and learning efficiency is high, understand thorough, memory and profound, enhances the understandability of student, analysis ability, improves the quality of student.The utility model structure is simple, easy to operate, and carries out the teaching of plus-minus method by the method for simple entertaining, can improve the enthusiasm of Students ' Learning, enables student firmly grasp the computing of plus-minus method at short notice, improves the efficient of teachers' instruction.
Description
Technical field
The utility model relates to a kind of plus and minus calculation demonstration teaching aid.
Background technology
In primary school math teaching, the study of signed magnitude arithmetic(al) is the very basic and important content of courses.The figure place of numeral is more, and the more difficult grasp of student, therefore for beginner, the grasp of plus-minus method is more difficult.Current teacher adopts traditional number form that is digital or that draw on blackboard to carry out plus-minus method teaching usually, and form of teaching is uninteresting, and students ' interest of study is not dense.
Summary of the invention
The technical problems to be solved in the utility model be to provide a kind of structure simple, be convenient to plus and minus calculation demonstration teaching aid that signed magnitude arithmetic(al) is demonstrated.
For solving the problems of the technologies described above, the utility model comprises demonstration board, the demonstration groove described demonstration board offering shifting chute and be communicated with shifting chute, and described demonstration groove is multiple, be provided with the demonstration pearl that can slide in groove in described shifting chute and demonstration groove, described demonstration pearl is provided with multiple; Be provided with back up pad bottom described demonstration board, be installed in box portion bottom wall bottom described back up pad, the sidepiece of described box body is provided with between demonstration board and box portion bottom wall can the drawer of pull.
Described demonstration board is provided with multiple demonstration district be interconnected, and comprises two shifting chutes be oppositely arranged in each demonstration district, and wherein a shifting chute is provided with three demonstration grooves be communicated with it, and another shifting chute is provided with two demonstration grooves be communicated with it.
Described box body is hinged with lid box body can closed.
Described box body and lid are provided with snap close.
Described demonstration pearl comprises the connecting rod that its external diameter is less than shifting chute and demonstration groove groove width, and the two ends of described connecting rod are separately installed with colour ball, and the external diameter of described colour ball is greater than the groove width of shifting chute and demonstration groove, and the spacing between described two colour balls is greater than the thickness of demonstration board.
After adopting said structure, owing to being provided with shifting chute and demonstration groove, during use, the plus-minus method within five is demonstrated by demonstration pearl is slipped into demonstration groove from shifting chute or slides out to shifting chute from demonstration groove in same demonstration district, and the plus-minus method of more than five can be demonstrated in adjacent demonstration district.This kind of plus-minus method demonstration teaching aid can be vivid demonstration plus-minus method, make Students ' Learning signed magnitude arithmetic(al) very clear, concrete image, interesting, student is entered among happy study naturally, and learning efficiency is high, understand thorough, memory and profound, enhances the understandability of student, analysis ability, improves the quality of student.The utility model structure is simple, easy to operate, and carries out the teaching of plus-minus method by the method for simple entertaining, can improve the enthusiasm of Students ' Learning, enables student firmly grasp the computing of plus-minus method at short notice, improves the efficient of teachers' instruction.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation that Fig. 1 analyses and observe along A-A line.
Embodiment
As depicted in figs. 1 and 2, plus and minus calculation demonstration teaching aid comprises box body 7 and and the lid 8 that box body 7 can be closed hinged by hinge 10 with box body 7, and on box body 7 and lid 8, correspondence is provided with snap close.Demonstration board 1 is installed in box body 7, demonstration board 1 is provided with multiple demonstration district, two shifting chutes be oppositely arranged 2 are provided with in each demonstration district, wherein a shifting chute 2 is communicated with three demonstration grooves 3, another shifting chute 2 is communicated with two demonstration grooves 3, thus making each demonstration district have five to demonstrate groove 3, the shifting chute 2 in adjacent demonstration district is interconnected.Be provided with the demonstration pearl 4 that can slide in groove in shifting chute 2 and demonstration groove 3, demonstration pearl 4 is provided with multiple, and the number of demonstration pearl 4 adapts with the number of demonstration groove 3.Demonstration pearl 4 comprises the connecting rod 41 that its external diameter is less than shifting chute 2 and demonstration groove 3 groove width, the two ends of connecting rod 41 are separately installed with colour ball 42, the external diameter of colour ball 42 is greater than the groove width of shifting chute 2 and demonstration groove 3, spacing between two colour balls 42 is greater than the thickness of demonstration board 1, ensure that demonstration pearl 4 can slide along shifting chute 2 and demonstration groove 3 and can prevent demonstration pearl 4 from dropping from demonstration board 1, impact demonstration on demonstration board 1.For can be more lively carry out teaching demonstration, plane is arranged in the outer face of colour ball 42, and on its outer face, arranges groove and install magnet 43, the cartoon picture 44 with iron plate can be pull-in on colour ball 42 during demonstration, attract the notice of student, improve the learning interest of student.
Shifting chute 2 and all through demonstration board 1 of demonstration groove 3 in the present embodiment, this kind of project organization is simple, low cost of manufacture.
For convenience of the slip of demonstration pearl 4 on demonstration board 1, be fixed with down the back up pad 5 of stretching bottom demonstration board 1, make to leave sliding space between demonstration board 1 and box body 7 diapire.Be arranged on box body 7 diapire bottom back up pad 5, back up pad 5 clamps with box body 7 diapire and is connected, and facilitates assembling of the present utility model, also facilitates picking and placeing of demonstration pearl 4.For ensureing the aesthetic property of teaching aid, the upper surface of demonstration board 1 is concordant with the upper surface of box body 7.For improving practicality of the present utility model, the right side opening of box body 7, and be provided with between opening part demonstration board 1 and box body 7 diapire can the drawer 6 of outside pull, unnecessary demonstration pearl 4 can be placed in drawer 6, ensures neatly of the present utility model.
During use, the plus-minus method within five is demonstrated by demonstration pearl 4 is slipped into demonstration groove 3 from shifting chute 2 or slides out to shifting chute 2 from demonstration groove 3 in same demonstration district, and the plus-minus method of more than five can be demonstrated in adjacent demonstration district.This kind of plus-minus method demonstration teaching aid can be vivid demonstration plus-minus method, make Students ' Learning signed magnitude arithmetic(al) very clear, concrete image, interesting, student is entered among happy study naturally, and learning efficiency is high, understand thorough, memory and profound, enhances the understandability of student, analysis ability, improves the quality of student.The utility model structure is simple, easy to operate, and carries out the teaching of plus-minus method by the method for simple entertaining, can improve the enthusiasm of Students ' Learning, enables student firmly grasp the computing of plus-minus method at short notice, improves the efficient of teachers' instruction.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.In every case, within inventive concept scope of the present utility model, any amendment made, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.
Claims (5)
1. a plus and minus calculation demonstration teaching aid, it is characterized in that it comprises demonstration board (1), the demonstration groove (3) described demonstration board (1) offering shifting chute (2) and be communicated with shifting chute (2), described demonstration groove (3) is for multiple, be provided with the demonstration pearl (4) that can slide in groove in described shifting chute (2) and demonstration groove (3), described demonstration pearl (4) is provided with multiple; Described demonstration board (1) bottom is provided with back up pad (5), and described back up pad (5) bottom is installed in box portion bottom wall, and the sidepiece of described box body (7) is provided with between demonstration board (1) and box portion bottom wall can the drawer (6) of pull.
2. plus and minus calculation demonstration teaching aid according to claim 1, it is characterized in that described demonstration board (1) is provided with multiple demonstration district be interconnected, two shifting chutes be oppositely arranged (2) are comprised in each demonstration district, wherein a shifting chute (2) is provided with three demonstration grooves (3) be communicated with it, and another shifting chute (2) is provided with two demonstration grooves be communicated with it.
3. plus and minus calculation demonstration teaching aid according to claim 1, is characterized in that described box body (7) being hinged with the lid (8) box body (7) can closed.
4. plus and minus calculation demonstration teaching aid according to claim 3, is characterized in that described box body (7) and lid (8) are provided with snap close (9).
5. plus and minus calculation demonstration teaching aid according to any one of claim 1 to 4, it is characterized in that described demonstration pearl (4) comprises its external diameter and is less than shifting chute (2) and demonstrates the connecting rod (41) of groove (3) groove width, the two ends of described connecting rod (41) are separately installed with colour ball (42), the external diameter of described colour ball (42) is greater than the groove width of shifting chute (2) and demonstration groove (3), and the spacing between described two colour balls is greater than the thickness of demonstration board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792961.6U CN204257058U (en) | 2014-12-16 | 2014-12-16 | Plus and minus calculation demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420792961.6U CN204257058U (en) | 2014-12-16 | 2014-12-16 | Plus and minus calculation demonstration teaching aid |
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| Publication Number | Publication Date |
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| CN204257058U true CN204257058U (en) | 2015-04-08 |
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| CN201420792961.6U Active CN204257058U (en) | 2014-12-16 | 2014-12-16 | Plus and minus calculation demonstration teaching aid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107080938A (en) * | 2017-06-12 | 2017-08-22 | 秦浩添 | Primary grades finger mathematical operation game cartridge |
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2014
- 2014-12-16 CN CN201420792961.6U patent/CN204257058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107080938A (en) * | 2017-06-12 | 2017-08-22 | 秦浩添 | Primary grades finger mathematical operation game cartridge |
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| GR01 | Patent grant |