CN2120366U - Teaching models for mathematics in primary school - Google Patents
Teaching models for mathematics in primary school Download PDFInfo
- Publication number
- CN2120366U CN2120366U CN 90201909 CN90201909U CN2120366U CN 2120366 U CN2120366 U CN 2120366U CN 90201909 CN90201909 CN 90201909 CN 90201909 U CN90201909 U CN 90201909U CN 2120366 U CN2120366 U CN 2120366U
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- chart board
- mathematics
- utility
- model
- grid
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- 230000014509 gene expression Effects 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 7
- 210000001747 pupil Anatomy 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model relates to a studying tool for primary mathematics. A universal lattice and two cover plates directly denote broken numbers, decimals, percentages, etc. The utility model can be used for calculating the side length and the area of 'seven shapes' and 'four bodies' in primary mathematics. Simultaneously, a rectangle is used as the fundamental figure of the 'seven shapes'. The area expressions of the 'seven shapes' are associated and unified by a general formula, which is favorable for pupils to understand and assimilate mathematics knowledge. The utility model has the advantages of simple design and low cost. The utility model can be made into a teaching tool to be used by teachers. The utility model can also be used as a jointed board intelligent toy.
Description
The present invention is a kind of pupil's schooling apparatus.
Mathematical concept is often more abstract.The pupil has been sought after a kind of schooling apparatus intuitively when learning mathematics, to help to understand relevant notion.Although the teacher often has corresponding teaching aid, lack organic connections between these teaching aids, also can not allow one pair of student's staff.For this reason, once there was manufacturer production to go out complete pupil's mathematics apparatus, but owing to still lack organic connections, and bring a high price, therefore fail to popularize.
Purpose of the present invention is to provide a kind of new mathematics learning aid to the pupil, and it not only can organically connect the many knowledge in the primary school mathematics, and can be with the related content visualize, thereby helps the student to strengthen understanding and memory, and school grade is improved.
The present invention is achieved in that 1, makes base plate with the big grid (omnipotent grid) that includes lattice, add two cover plates above, cover plate can move on base plate, carry out the visual representation and the calculating of mark, decimal, percentage, rectangular coordinate image, and be used for the length of side and the area of measurements and calculations seven shapes (rectangle, square, parallelogram, triangle, trapezoidal, circular and fan-shaped), and the surface area of limbs (rectangular parallelepiped, square, right cylinder and cone), also can carry out the conversion between the square measure.2, use the material of suitable thickness, make the chart board of above-mentioned seven shapes, wherein the part chart board can separate along the dotted line of delimiting, so that be spliced into rectangle, thereby seven shapes are all summed up in the point that on the rectangle, are convenient to rectangular area formula other area of graph formula of deriving respectively, and with a general formula S=kab with they the area formula contact and unite, just in different figures, k, a, b represent different culvert meanings respectively.The thickness of above-mentioned material all can between 2 centimetres at 0.05 millimeter.
The present invention has been owing to run through related content with omnipotent grid and rectangle, and represented with material object, thus help the student to mastery of knowledge with digest; Because related content is linked together, make the design simplification of figure material object, thereby reduced cost, it is also convenient to use.The present invention also can be made into teaching aid, says for the teacher and uses class hour.In addition, figure material object of the present invention also can be used as the puzzle that is similar to seven-piece puzzle, risks 1,100 kinds of interesting figures, enlivens body and mind and tap intellectual resources usefulness for the student.
Accompanying drawing has been described one embodiment of the present of invention, and Fig. 1 is omnipotent grid and cover plate and using method thereof, and Fig. 2 is seven kinds of chart boards and cuts apart and joining method.
In Fig. 1, (1) is omnipotent grid, 10 units of this grid length of side, and the lattice that to include 100 length of sides be 1 unit is so that carry out the calculating of percentage and the conversion of square measure.(3) for using the omnipotent grid in percentage, (2), (4) are two movable cover plates, and they are covered on omnipotent grid, and the lattice that exposes among the figure is 8, and these lattice numbers just account for 8% of the medium and small grid sum of big grid so.
Other of omnipotent grid used, or and percentage in usage similar, or use in conjunction with teaching material and to get final product.
In Fig. 2, all available general formula S=kab of each graphics area represents that wherein (6) are rectangle, also is fundamental figure, its area S=ab, and k=1 here, a is for long, and b is wide.(5) be square, can regard rectangular special case as, its area S=a
2, k=1 here, a=b.(7) be parallelogram, (8) are identical with (7) but divisible, and dotted line is the cut-off rule the end of perpendicular among the figure, that is the height of parallelogram; (9) rectangle for being combined into (8), its area (being the area of parallelogram (7) or (8)) S=ab, k=1 here, a is the end of parallelogram, b is the height of parallelogram.(10) be two identical triangles with (13), (13) can cut apart along dotted line (promptly high), two triangles can be combined into a parallelogram (11), be combined into rectangle (12) after also divisible, therefore the area of triangle (10) is 1/2 of corresponding rectangle (a 12) area, be S=1/2 ab, here k=1/2, a is the leg-of-mutton end, and b is leg-of-mutton height, (14) and (17) be two identical trapezoidal, the two can be combined into parallelogram (15), be combined into rectangle (16) after also divisible, its long a is the trapezoidal upper base and the sum a that goes to the bottom ,+a
2, wide b is trapezoidal height, because of (16) are two same trapezoidal being spliced, so trapezoidal area S=kab=1/2 (a
1+ a
2) b, k=1/2 here.(18), (19) are two identical circles, (19) can be divided into some little fan-shapedly along diameter, and be combined into rectangle (20) with them, it is long to be 1/2 of circumference, be that π a(a is a radius of circle), so the area of a circle (being the area of rectangle (20)) is S=π ab=π a
2, k=π here, a=b.(21), (22) be two identical fan-shaped, (22) can cut apart along radius, be combined into rectangle (23) after cutting apart, it is long to be 1/2 of fan-shaped arc length, promptly (n)/360 π a(a is a radius, n is the central angle number of degrees), wide b also is a radius, so the area of (23) just fan-shaped (22) is S=(n)/360 π ab=(n)/360 π a
2
In the present embodiment, (9), (11), (12), (15), (16), (20) can provide chart board, and allow the student oneself risk with corresponding chart board.(22), (23) also can not give chart board, the little fan-shaped replacement of part in (22) available (19), (23) then utilize these little fan-shaped risking.
Claims (2)
1, a kind of primary school mathematics learning aid is characterized in that: make base plate with the omnipotent grid (1) that includes lattice, add two cover plates (2) and (4) above, cover plate (2) and (4) are movably on omnipotent grid (1); Material with suitable thickness, make square chart board (5), rectangle chart board (6), parallelogram chart board (7) and (8), triangle chart board (10) and (13), trapezoidal chart board (14) and (17), circular chart board (18) and (19) and fan-shaped chart board (21), wherein parallelogram (8), triangle (13), trapezoidal (17) and circle (19) can separate and are combined into (or cooperate with corresponding chart board be combined into) rectangle along the dotted line of delimiting, and their area expression formula is got in touch and unite with general formula S=kab.
2, mathematics learning aid according to claim 1, the length of side that it is characterized in that omnipotent grid is 10 units, the lattice that to include 100 length of sides be 1 unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201909 CN2120366U (en) | 1990-02-20 | 1990-02-20 | Teaching models for mathematics in primary school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90201909 CN2120366U (en) | 1990-02-20 | 1990-02-20 | Teaching models for mathematics in primary school |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2120366U true CN2120366U (en) | 1992-10-28 |
Family
ID=4883419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90201909 Granted CN2120366U (en) | 1990-02-20 | 1990-02-20 | Teaching models for mathematics in primary school |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2120366U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584568A (en) * | 2017-10-14 | 2018-01-16 | 苏州亨利通信材料有限公司 | The cutting method and Special Automatic cutting apparatus of a kind of electric wire hophornbeam disk fan plate |
| CN111230760A (en) * | 2018-11-29 | 2020-06-05 | 东泰高科装备科技有限公司 | Method for utilizing polishing pad tailing |
| CN112339058A (en) * | 2020-11-13 | 2021-02-09 | 大亚(江苏)地板有限公司 | Preparation method of large-size fishbone floor-splicing surface plate |
| CN112382170A (en) * | 2020-12-19 | 2021-02-19 | 殷建华 | Multifunctional mathematics box |
-
1990
- 1990-02-20 CN CN 90201909 patent/CN2120366U/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584568A (en) * | 2017-10-14 | 2018-01-16 | 苏州亨利通信材料有限公司 | The cutting method and Special Automatic cutting apparatus of a kind of electric wire hophornbeam disk fan plate |
| CN107584568B (en) * | 2017-10-14 | 2023-04-18 | 苏州亨利通信材料有限公司 | Cutting method of iron and wood disc fan plate for wires and cables and special automatic cutting equipment |
| CN111230760A (en) * | 2018-11-29 | 2020-06-05 | 东泰高科装备科技有限公司 | Method for utilizing polishing pad tailing |
| CN112339058A (en) * | 2020-11-13 | 2021-02-09 | 大亚(江苏)地板有限公司 | Preparation method of large-size fishbone floor-splicing surface plate |
| CN112382170A (en) * | 2020-12-19 | 2021-02-19 | 殷建华 | Multifunctional mathematics box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |