CN201383239Y - Teaching and demonstration apparatus - Google Patents
Teaching and demonstration apparatus Download PDFInfo
- Publication number
- CN201383239Y CN201383239Y CN200920011438U CN200920011438U CN201383239Y CN 201383239 Y CN201383239 Y CN 201383239Y CN 200920011438 U CN200920011438 U CN 200920011438U CN 200920011438 U CN200920011438 U CN 200920011438U CN 201383239 Y CN201383239 Y CN 201383239Y
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Abstract
The utility model relates to a teaching apparatus, in particular to a teaching and demonstration apparatus for demonstrating the Pythagorean theorem. The teaching and demonstration apparatus is used to demonstrate the Pythagorean theorem and is vivid and understandable. The teaching and demonstration apparatus comprises a demonstration board. The structure of the teaching and demonstration apparatus has the following characteristics: a right triangle-shaped magnetic template is arranged on the demonstration board, four rectangular magnetic templates are arranged side by side on the long leg of the right triangle-shaped magnetic template, the width of each rectangular magnetic template is one quarter of the length of the long leg, and the length of each rectangular magnetic template is equal to the length of the long leg; a square magnetic template, the side length of which is equal to the length of the short leg, is arranged on the short leg of the right triangle-shaped magnetic template; a square magnetic template, the side length of which is equal to the length of the hypotenuse, is arranged on the hypotenuse of the right triangle-shaped magnetic template; and the proportion between the lengths of the short leg, the long leg and the hypotenuse is 3:4:5.
Description
Technical field:
The utility model relates to a kind of teaching equipment, especially a kind of teaching demonstration apparatus that is used to show Pythagorean theorem.
Background technology:
Pythagorean theorem is junior middle school's plane geometry important basic theorem in the ABC of stage.In traditional teaching, the Pythagorean theorem reasoning generally is to be undertaken by character express, picture or courseware, does not have good intuitive, makes student's lack of perceptual knowledge; Even also there is not vivid shortcoming in existing several Pythagorean theorem demonstration equipment, be difficult to reach the teaching efficiency of expection.
The utility model content:
The utility model is exactly at the problems referred to above, and a kind of be used to show Pythagorean theorem, the teaching demonstration apparatus that image is understandable are provided.
For realizing above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, the utility model comprises demonstration board, its structural feature is that demonstration board is provided with right-angle triangle magnetic template, be arranged side by side on the long right-angle side of right-angle triangle magnetic template four wide for the long right angle length of side 1/4th, grow and to be the rectangle magnetic template of the long right angle length of side; The short right-angle side of right-angle triangle magnetic template is provided with the square magnetic template of the length of side for the short right angle length of side; It is the long square magnetic frame of hypotenuse that the hypotenuse of right-angle triangle magnetic template is provided with the length of side; The short right angle length of side, the long right angle length of side, the long ratio of hypotenuse are 3: 4: 5.
The beneficial effects of the utility model:
Because the utility model has adopted right-angle triangle magnetic template, the rectangle magnetic template of four identical sizes, square magnetic template, square magnetic frame and demonstration base plate, the demonstration that makes Pythagorean theorem is visual pattern more; And the utility model is simple in structure, and being easy to the student is the imitation making of purpose with study, comprehensive above advantage has not only increased the perceptual knowledge of student to Pythagorean theorem greatly, but also can excite students'ability for practice, make teaching aid become learning aid, reached good teaching efficiency.
Description of drawings:
Fig. 1 is a kind of presentation state figure of the present utility model;
Fig. 2 is another kind of presentation state figure of the present utility model.
Embodiment:
The utility model comprises demonstration board 1, demonstration board 1 is provided with right-angle triangle magnetic template 4, be arranged side by side on the long right-angle side of right-angle triangle magnetic template 4 four wide for the long right angle length of side 1/4th, grow and to be the rectangle magnetic template 5 of the long right angle length of side; The short right-angle side of right-angle triangle magnetic template 4 is provided with the square magnetic template 2 of the length of side for the short right angle length of side; It is the long square magnetic frame 3 of hypotenuse that the hypotenuse of right-angle triangle magnetic template 4 is provided with the length of side; The short right angle length of side, the long right angle length of side, the long ratio of hypotenuse are 3: 4: 5.
For showing the position relation between the template better, be decorated with the position view of right-angle triangle magnetic template 4 at demonstration board 1 middle part; Respectively with right-angle triangle magnetic template 4 three while being, be decorated with three square position views.
Below in conjunction with presentation state figure of the present utility model, specify a presentation process of the present utility model:
The first step: earlier right-angle triangle magnetic template 4 is placed in the position view on the corresponding position, then with the rectangle magnetic template 5 of four identical sizes, contact with right-angle triangle magnetic template 4 by minor face, the long right-angle side that is emitted on successively with right-angle triangle magnetic template 4 is in the square position view of the length of side; The short right angle length of side that square magnetic template 2 is placed on right-angle triangle magnetic template 4 is in the square position view of the length of side.
Second step: with rectangle magnetic template 5 and square magnetic template 2, press the synoptic diagram position, put into square magnetic frame 3 respectively.Can draw like this, the rectangle magnetic template 5 of four identical sizes and the area summation of square magnetic template 2 and the length of side are that the long area of hypotenuse of right-angle triangle magnetic template 4 equates, can prove Pythagorean theorem thus: in right-angle triangle, the quadratic sum of two right-angle sides equal hypotenuse square.
Claims (1)
1, a kind of teaching demonstration apparatus, comprise demonstration board (1), it is characterized in that demonstration board (1) is provided with right-angle triangle magnetic template (4), be arranged side by side on the long right-angle side of right-angle triangle magnetic template (4) four wide for the long right angle length of side 1/4th, grow and to be the rectangle magnetic template (5) of the long right angle length of side; The short right-angle side of right-angle triangle magnetic template (4) is provided with the square magnetic template (2) of the length of side for the short right angle length of side; It is the long square magnetic frame (3) of hypotenuse that the hypotenuse of right-angle triangle magnetic template (4) is provided with the length of side; The short right angle length of side, the long right angle length of side, the long ratio of hypotenuse are 3: 4: 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920011438U CN201383239Y (en) | 2009-03-11 | 2009-03-11 | Teaching and demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920011438U CN201383239Y (en) | 2009-03-11 | 2009-03-11 | Teaching and demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383239Y true CN201383239Y (en) | 2010-01-13 |
Family
ID=41526711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920011438U Expired - Fee Related CN201383239Y (en) | 2009-03-11 | 2009-03-11 | Teaching and demonstration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383239Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961865A (en) * | 2013-01-31 | 2014-08-06 | 李建华 | Pythagorean picture puzzle |
| CN108806414A (en) * | 2018-03-15 | 2018-11-13 | 淄博职业学院 | A kind of tutor auxiliary platform teaching aid for improving mathematical thinking |
-
2009
- 2009-03-11 CN CN200920011438U patent/CN201383239Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961865A (en) * | 2013-01-31 | 2014-08-06 | 李建华 | Pythagorean picture puzzle |
| CN108806414A (en) * | 2018-03-15 | 2018-11-13 | 淄博职业学院 | A kind of tutor auxiliary platform teaching aid for improving mathematical thinking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20100311 |