CN202189490U - Geometry demonstration device for primary school - Google Patents

Geometry demonstration device for primary school Download PDF

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Publication number
CN202189490U
CN202189490U CN2011203072179U CN201120307217U CN202189490U CN 202189490 U CN202189490 U CN 202189490U CN 2011203072179 U CN2011203072179 U CN 2011203072179U CN 201120307217 U CN201120307217 U CN 201120307217U CN 202189490 U CN202189490 U CN 202189490U
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CN
China
Prior art keywords
connecting rod
connecting rods
length
primary school
short
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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
Application number
CN2011203072179U
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Chinese (zh)
Inventor
陈爱红
张鹏
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Individual
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Individual
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Priority to CN2011203072179U priority Critical patent/CN202189490U/en
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Publication of CN202189490U publication Critical patent/CN202189490U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

A geometry demonstration device for a primary school belongs to the field of teaching aids for a primary school. The demonstration device adopts the technical scheme that five plate-shaped connecting rods are comprised, the five connecting rods include two long connecting rods with the same structure and size, two short connecting rods with the same structure and size, and an intermediate connecting rod; end holes are respectively formed at two ends of the short connecting rods and the long connecting rods; two middle holes are formed at parts between the two end holes on the long connecting rods; the length between the two middle holes is equal to that between the two end holes on the short connecting rods; and the square number of length between the two end holes on the middle connecting rod is equal to the square number of double the length between the two end holes on the short connecting rods. By adopting the technical scheme, shapes of a rectangle, a foursquare, a parallelogram, a lozenge, a right angled triangle, an echelon and the like can be quickly and visually demonstrated, so that pupils can quickly establish a systemic and integrate geometric figure concept, and abstract thinking ability of the pupils is improved.

Description

How much apparatus for demonstrating of a kind of primary school
Technical field
The utility model relates to a kind of teaching aid, relates in particular to how much apparatus for demonstrating of a kind of primary school.
Background technology
In the teaching of primary school mathematics how much rudimental knowledges, because of pupil's age little, abstract thinking ability is poor; In the face of the geometric figure in the geometry rudimental knowledge is difficult to accept, be convenient teaching, at present; The geometric figure that cardboard is cut to be needed is often arranged, and demonstration helps its suggestion key concept to the student, but this teaching aid is independent separately; Make trouble, carry also inconveniently, and be difficult to the instruction student and set up system, complete geometric figure notion.
Summary of the invention
The utility model is to the existing in prior technology shortcoming; And the technical scheme of how much apparatus for demonstrating of a kind of primary school simple in structure, easy to carry is provided; Adopt this technical scheme; Can be intuitively for the pupil demonstrate multiple geometric configuration, and can see the different and contact between them intuitively
The utility model is realized through following technical measures: how much apparatus for demonstrating of a kind of primary school, and it comprises five heel piece shape connecting rods, connecting rod during the short connecting rod, that five connecting rods are respectively the long connecting rod of two same structures and size, two same structures and size is limit; The two ends of said short connecting rod and long connecting rod are respectively arranged with stomidium; Part on the said long connecting rod between two stomidiums is provided with two interstitial holes; Length between said two interstitial holes equals the length between two stomidiums of said short connecting rod, said between connecting rod two stomidiums square number of length equal the square number of length between short connecting rod two stomidiums of twice.Adopt this technical scheme; Demonstration rectangle that can quicklook, square, parallelogram, rhombus, right-angle triangle, multiple shape such as trapezoidal; Can make the student set up the geometric figure notion of system complete fast, strengthen student's abstract thinking ability.
The concrete characteristics of the utility model also have, and also are provided with an interstitial hole on the connecting rod in above-mentioned, and the length between said interstitial hole and the middle connecting rod end stomidium far away equals on the short connecting rod length between two stomidiums.A hole is set more can have carried out the figure demonstrating of lumbar triangle shape easily.
Above-mentioned connecting rod is provided with scale.Can let the student better understand the relation between various geometric each length of side more intuitively like this.
The beneficial effect of this programme can be learnt according to the narration to such scheme; Its structural design advantages of simple, can efficiently radiates heat; Demonstration rectangle that can quicklook, square, parallelogram, rhombus, isosceles triangle, right-angle triangle, multiple shape such as trapezoidal; Can make the student set up the geometric figure notion of system complete fast, strengthen student's abstract thinking ability.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure, 1, short connecting rod, 2, long connecting rod, 3, middle connecting rod, 4, stomidium, 5, interstitial hole.
Embodiment
For clearly demonstrating the technical characterstic of this programme, through an embodiment, this programme is set forth below.
Shown in accompanying drawing, how much apparatus for demonstrating of a kind of primary school, it comprises five heel piece shape connecting rods, five connecting rods are respectively the short connecting rod 1 of the long connecting rod 2 of two same structures and size, two same structures and size, a middle connecting rod 3; The two ends of said short connecting rod 1 and long connecting rod 2 are respectively arranged with stomidium 4; Part on the said long connecting rod 2 between two stomidiums is provided with two interstitial holes 5; Length between said two interstitial holes equals the length between two stomidiums of said short connecting rod 1, said between 3 liang of stomidiums of connecting rod the square number of length equal the square number of length between 1 liang of stomidium of short connecting rod of twice.Adopt this technical scheme, demonstration rectangle that can quicklook, square, parallelogram, rhombus right-angle triangle, multiple shape such as trapezoidal can make the student set up the geometric figure notion of system complete fast, strengthen student's abstract thinking ability.Wherein, also be provided with an interstitial hole 5 on the middle connecting rod 3, said interstitial hole and middle connecting rod equal on the short connecting rod length between two stomidiums than the length between the far-end stomidium.A hole is set more can have carried out the figure demonstrating of lumbar triangle shape easily.Certainly, also can be provided with scale on the above-mentioned connecting rod.Can let the student better understand the relation between various geometric each length of side more intuitively like this.
The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing; Repeat no more at this; Certainly, above-mentioned explanation is not to be the restriction to the utility model, and the utility model also is not limited in above-mentioned giving an example; Variation, remodeling, interpolation or replacement that those skilled in the art are made in the essential scope of the utility model also should belong to the protection domain of the utility model.

Claims (3)

1. how much apparatus for demonstrating of a primary school is characterized in that it comprises five heel piece shape connecting rods, and five connecting rods are respectively the long connecting rod of two same structures and size, two same structures and the short connecting rod of size, a middle connecting rod; The two ends of said short connecting rod and long connecting rod are respectively arranged with stomidium; Part on the said long connecting rod between two stomidiums is provided with two interstitial holes; Length between said two interstitial holes equals the length between two stomidiums of said short connecting rod, said between connecting rod two stomidiums square number of length equal the square number of length between short connecting rod two stomidiums of twice.
2. how much apparatus for demonstrating of primary school according to claim 1 is characterized in that, also are provided with an interstitial hole on the connecting rod in said, and the length between said interstitial hole and the middle connecting rod end stomidium far away equals on the short connecting rod length between two stomidiums.
3. how much apparatus for demonstrating of primary school according to claim 2 is characterized in that said connecting rod is provided with scale.
CN2011203072179U 2011-08-23 2011-08-23 Geometry demonstration device for primary school Expired - Fee Related CN202189490U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203072179U CN202189490U (en) 2011-08-23 2011-08-23 Geometry demonstration device for primary school

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203072179U CN202189490U (en) 2011-08-23 2011-08-23 Geometry demonstration device for primary school

Publications (1)

Publication Number Publication Date
CN202189490U true CN202189490U (en) 2012-04-11

Family

ID=45920926

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203072179U Expired - Fee Related CN202189490U (en) 2011-08-23 2011-08-23 Geometry demonstration device for primary school

Country Status (1)

Country Link
CN (1) CN202189490U (en)

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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: 20120411

Termination date: 20120823