CN201829091U - Cone teaching aid - Google Patents
Cone teaching aid Download PDFInfo
- Publication number
- CN201829091U CN201829091U CN2010205803507U CN201020580350U CN201829091U CN 201829091 U CN201829091 U CN 201829091U CN 2010205803507 U CN2010205803507 U CN 2010205803507U CN 201020580350 U CN201020580350 U CN 201020580350U CN 201829091 U CN201829091 U CN 201829091U
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- CN
- China
- Prior art keywords
- cone
- core
- teaching aid
- area
- circular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a cone teaching aid comprising the bottom surface of a cone, the side surface of the cone and a cone core, wherein the cone core is a conical framework, the bottom surface of the cone is circular and installed at the bottom surface of the cone core; and the side surface of the cone is fan-shaped and installed at the side surface of the cone core. The area of the bottom surface of the cone core is equal to that of the bottom surface of the cone. The area of the side surface of the cone core is equal to that of the side surface of the cone. When being used, the cone teaching aid can display a cone entity and each part of the upper surface area respectively, thus being beneficial to students in understanding and verifying the formula for computing the surface area of the cone.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly relates to a kind of circular cone teaching aid.
Background technology
In mathematics teaching in junior middle school, relevant for the content of cone surface area.If a kind of model that can demonstrate the expansion of cone surface area is arranged, just can help classmates to fully understand, the thought process of direct feel teaching by the conversion of solid figure to planar graph.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of circular cone teaching aid.
In order to achieve the above object, the circular cone teaching aid that provides of the utility model comprises: cone bottom surface, cone side and cone core; Wherein: the cone core is conical skeleton; The cone bottom surface is rounded, is installed on the bottom surface of cone core; The cone side is fan-shaped, is installed on the side of cone core.
The base area of described cone core equates with the area of cone bottom surface.
The lateralarea of described cone core equates with the area of cone side.
The circular cone teaching aid that the utility model provides in use, the entity that can show cone respectively with and the each several part of top surface area, therefore understand for the student and the computing formula of checking cone surface area helpful.
Description of drawings
The circular cone teaching aid STRUCTURE DECOMPOSITION stereographic map that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the circular cone teaching aid that the utility model provides is elaborated.
As shown in Figure 1, the circular cone teaching aid that provides of the utility model comprises: cone bottom surface 1, cone side 2 and cone core 3; Wherein: cone core 3 is conical skeleton; Cone bottom surface 1 is rounded, is installed on the bottom surface of cone core 3; Cone side 2 is fan-shaped, is installed on the side of cone core 3.
The base area of described cone core 3 equates with the area of cone bottom surface 1.
The lateralarea of described cone core 3 equates with the area of cone side 2.
Stick cone side 2 on cone bottom surface 1, the side and just can form the circular cone teaching aid that the utility model provides sticking on the bottom surface of described cone core 3 during making.
Claims (3)
1. circular cone teaching aid, it is characterized in that: described circular cone teaching aid comprises: cone bottom surface (1), cone side (2) and cone core (3); Wherein: cone core (3) is conical skeleton; Cone bottom surface (1) is rounded, is installed on the bottom surface of cone core (3); Cone side (2) is fan-shaped, is installed on the side of cone core (3).
2. circular cone teaching aid according to claim 1 is characterized in that: the base area of described cone core (3) equates with the area of cone bottom surface (1).
3. circular cone teaching aid according to claim 1 is characterized in that: the lateralarea of described cone core (3) equates with the area of cone side (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205803507U CN201829091U (en) | 2010-10-28 | 2010-10-28 | Cone teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205803507U CN201829091U (en) | 2010-10-28 | 2010-10-28 | Cone teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829091U true CN201829091U (en) | 2011-05-11 |
Family
ID=43967613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205803507U Expired - Fee Related CN201829091U (en) | 2010-10-28 | 2010-10-28 | Cone teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485038A (en) * | 2014-12-12 | 2015-04-01 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
-
2010
- 2010-10-28 CN CN2010205803507U patent/CN201829091U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485038A (en) * | 2014-12-12 | 2015-04-01 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
| CN104485038B (en) * | 2014-12-12 | 2017-04-19 | 齐齐哈尔大学 | Dynamic regular cone section demonstration instrument |
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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: 20110511 Termination date: 20111028 |