CN2389398Y - Changeable three-view teaching aid - Google Patents
Changeable three-view teaching aid Download PDFInfo
- Publication number
- CN2389398Y CN2389398Y CN 99242894 CN99242894U CN2389398Y CN 2389398 Y CN2389398 Y CN 2389398Y CN 99242894 CN99242894 CN 99242894 CN 99242894 U CN99242894 U CN 99242894U CN 2389398 Y CN2389398 Y CN 2389398Y
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Abstract
The utility model relates to a puzzle teaching aid, which is composed of 2 to 26 cubes of which the edge length is a, 5 cuboids of which the length is 2a, the width is 2a and the height is a respectively, 2 to 12 cuboids of which the length is 2a, the width is a, and the height is a respectively, 2 big triangular prisms, a small triangular prisms, 2 polygon prisms, 8 1/4 circular cylinders, 8 small cylinders with 1/4 concave cylindrical surfaces, 2 large cylinders with 1/4 concave cylindrical surfaces and 2 cylinders with 1/4 cylindrical surfaces. Orthographic views with various patterning structure can be evolved, and thus, the utility model has favorable effects of cultivating logical thinking and space imagination, analyzing ability and strengthening intelligence. The utility model has the advantage of convenient fabrication.
Description
The utility model relates to a kind of picture mosaic teaching aid.
Utilize of the education of various geometric picture mosaic teaching aids, inspire and enhancement intelligence, have good effect child and students in middle and primary schools.
The purpose of this utility model is to provide a kind of raising space imagination, and geometric figure is special, changes complicated changeable body three-view diagram teaching aid.
The utility model is made up of following solid:
1. square is 2～26, and its rib is long to be a;
2. rectangular parallelepiped is 5, and its length is respectively 2a, 2a, a:
3. rectangular parallelepiped is 2～12, and its length is respectively 2a, a, a;
4. 2 of little triangular prisms, its height is a, and the end is an isosceles right triangle, and waist is long to be a;
5. 2 of big triangular prisms, its height is a, and the end is an isosceles right triangle, and waist is long to be 2a;
6. polygon prism is 2, and its height is a, and the end is an isosceles trapezoid, and waist is long to be a, and two ends were respectively
With
7.1/4 8 on right cylinder, its height is a, and the end is that the right angle is fan-shaped, and fan-shaped radius of circle is a;
8. with 8 of the paxillas of 1/4 fluted column face, its height is a, and its end is that the length of side is that to deduct radius of circle be that the right angle of a is fan-shaped for the square of a;
9. with 2 of the big cylinders of 1/4 recessed cylinder, its height is a, and its end is that the length of side is that to deduct radius of circle be that the right angle of a is fan-shaped for the square of 2a;
10. with 2 of the cylinders on 1/4 face of cylinder, its height is a, and its end is that radius of circle is that fan-shaped the deducting with the fan-shaped center of circle in the right angle of 2a is that the length of side on summit is the square of a.
Said square can be established 2, and length is respectively the rectangular parallelepiped of 2a, a, a can establish 2.
The utility model can develop the three-view diagram of various patternings, and to cultivating logical thinking and space imagination, analysis ability, good effect has increased intelligence.
Fig. 1 is a construction diagrams of the present utility model.
Fig. 2 is one of changeable body three-view diagram.
Fig. 3 is two of a changeable body three-view diagram.
Fig. 4 is three of a changeable body three-view diagram.
Fig. 5 is four of a changeable body three-view diagram.
As Fig. 1, the utility model is by rib length is the square 1 (2) of a, rectangular parallelepiped 2 (5) that the length and width height is respectively 2a, 2a, a, the length and width height is respectively 2a, a, a rectangular parallelepiped 3 (2), little triangular prism 4 and big triangular prism 5 each 2, polygon prism 6 (2), 1/4 right cylinder 7 (8), with the paxilla 8 (8) of 1/4 fluted column face, form a=2cm with the big cylinder 9 (2) of 1/4 fluted column face with the cylinder 10 (2) on 1/4 face of cylinder.Fig. 2～5 provide 4 kinds of changeable body three-view diagram examples.
Claims (3)
1. changeable body three-view diagram teaching aid is characterized in that being provided with:
1) square is 2～26, and its rib is long to be a:
2) rectangular parallelepiped is 5, and its length is respectively 2a, 2a, a:
3) rectangular parallelepiped is 2～12, and its length is respectively 2a, a, a:
4) little triangular prism is 2, and its height is a, and the end is an isosceles right triangle, and waist is long to be a;
5) big triangular prism is 2, and its height is a, and the end is an isosceles right triangle, and waist is long to be 2a:
6) polygon prism is 2, and its height is a, and the end is an isosceles trapezoid, and waist is long to be a, and two ends were respectively
With
7) 1/4 right cylinder is 8, and its height is a, and the end is that the right angle is fan-shaped, and fan-shaped radius of circle is a;
8) with 8 of the paxillas of 1/4 fluted column face, its height is a, and its end is that the length of side is that to deduct radius of circle be that the right angle of a is fan-shaped for the square of a;
9) with 2 of the big cylinders of 1/4 recessed cylinder, its height is a, and its end is that the length of side is that to deduct radius of circle be that the right angle of a is fan-shaped for the square of 2a;
10) with 2 of the cylinders on 1/4 face of cylinder, its height is a, and its end is that radius of circle is that fan-shaped the deducting with the fan-shaped center of circle in the right angle of 2a is that the length of side on summit is the square of a.
2. as the said changeable body three-view diagram teaching aid of claim l, it is characterized in that said square establishes 2, length is respectively the rectangular parallelepiped of 2a, a, a and establishes 2.
3. as the said changeable body three-view diagram teaching aid of claim l, it is characterized in that: a=2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242894 CN2389398Y (en) | 1999-09-10 | 1999-09-10 | Changeable three-view teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99242894 CN2389398Y (en) | 1999-09-10 | 1999-09-10 | Changeable three-view teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2389398Y true CN2389398Y (en) | 2000-07-26 |
Family
ID=34029361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99242894 Expired - Fee Related CN2389398Y (en) | 1999-09-10 | 1999-09-10 | Changeable three-view teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2389398Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI510273B (en) * | 2013-09-13 | 2015-12-01 |
-
1999
- 1999-09-10 CN CN 99242894 patent/CN2389398Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI510273B (en) * | 2013-09-13 | 2015-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |