CN203118294U - Pythagorean theorem demonstrating instrument - Google Patents
Pythagorean theorem demonstrating instrument Download PDFInfo
- Publication number
- CN203118294U CN203118294U CN 201320191748 CN201320191748U CN203118294U CN 203118294 U CN203118294 U CN 203118294U CN 201320191748 CN201320191748 CN 201320191748 CN 201320191748 U CN201320191748 U CN 201320191748U CN 203118294 U CN203118294 U CN 203118294U
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- CN
- China
- Prior art keywords
- pythagorean theorem
- demonstrating instrument
- coordinate paper
- steel ball
- steel balls
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a Pythagorean theorem demonstrating instrument, which belongs to a math teaching aid. The Pythagorean theorem demonstrating instrument consists of a square bottom plate, a soft magnetic plate, coordinate paper, iron wires, steel balls and right-angled triangles, wherein the soft magnetic plate and the coordinate paper are covered on the square bottom plate in sequence; and the iron wires and the steel balls are adsorbed onto the coordinate paper. Preferably, 12 iron wires are provided; and 500-2000 steel balls are provided, and the diameter of each steel ball is equal to or less than 4 millimeters. Furthermore, 3-5 right-angle triangles of which the sizes are different are provided. Compared with the prior art, the Pythagorean theorem demonstrating instrument is simple in structure and is convenient to use; the side-side relation of any right-angled triangles of different sizes can be demonstrated by using magnetism, so that the Pythagorean theorem is verified, each student is provided with one demonstrating instrument, and the curiosity and manipulative abilities of children are satisfied; and the demonstrating instrument is well worth of popularizing and using.
Description
Technical field
The utility model relates to a kind of mathematics teaching aid and learning aid, specifically the Pythagorean theorem demonstration device.
Background technology
In mathematical education, the character that needs the study right-angle triangle, wherein Pythagorean theorem is a traditional knowledge point, how to learn, traditional way is to show with courseware, the teacher who also has adopts the method for picture mosaic to carry out, and shows fixing often right-angle triangle, the method for not showing random right-angle triangle.
The utility model content
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and the Pythagorean theorem demonstration device is provided.
The technical solution of the utility model realizes in the following manner, the Pythagorean theorem demonstration device, formed by square floor, soft magnet plate, coordinate paper, iron wire, steel ball and right-angle triangle, be covered with soft magnet plate and coordinate paper above the square floor in turn, be adsorbed with iron wire and steel ball above the coordinate paper.
As preferably, iron wire has 12, and steel ball has 500～2000, and diameter is smaller or equal to four millimeters.
Further, right-angle triangle is 3～5 that vary in size.
The utility model is compared with prior art: have simple in structure, easy to use, utilize magnetic can show frontier juncture, the limit system of any right-angle triangle of different sizes, thereby verified Pythagorean theorem, can satisfy the requirement of student's staff portion, satisfy child's curiosity and manipulative ability, have good value for applications.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1, square floor, 2, soft magnet plate, 3, coordinate paper, 4, iron wire, 5, steel ball, 6, right-angle triangle.
Embodiment
Below in conjunction with accompanying drawing the utility model is done following detailed description the in detail.
As shown in Figure 1, this Pythagorean theorem demonstration device is made up of square floor 1, soft magnet plate 2, coordinate paper 3, iron wire 4, steel ball 5 and right-angle triangle 6.During demonstration, right-angle triangle 6 is placed above the coordinate paper 3, place along three limits of right-angle triangle 6 with iron wire 4, and be that the length of side is shown three squares with three limits respectively, steel ball 5 is adsorbed in the square of 6 two right-angle sides formation of right-angle triangle, form the close layer of putting of two dimension, then the occupied area of steel ball just is the foursquare area that two right-angle sides form, then steel ball 5 is shifted out, be adsorbed onto in the square of right-angle triangle 6 hypotenuses formation, form the close layer of putting of two dimension, then the occupied foursquare area of area with regard to forming for hypotenuse of steel ball, can observe the two and equate, and then verify Pythagorean theorem.Change different right-angle triangles, perhaps directly utilize the right-angle triangle that scale mark forms above the coordinate paper 3 directly to demonstrate, can verify.
The above; it only is a part of embodiment of the present utility model; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. Pythagorean theorem demonstration device, formed by square floor (1), soft magnet plate (2), coordinate paper (3), iron wire (4), steel ball (5) and right-angle triangle (6), it is characterized in that, be covered with soft magnet plate (2) and coordinate paper (3) above the square floor (1) in turn, be adsorbed with iron wire (4) and steel ball (5) above the coordinate paper (3).
2. Pythagorean theorem demonstration device according to claim 1 is characterized in that, iron wire (4) has 12, and steel ball (5) has 500～2000, and diameter is smaller or equal to four millimeters.
3. Pythagorean theorem demonstration device according to claim 1 is characterized in that, right-angle triangle (6) is 3～5 that vary in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191748 CN203118294U (en) | 2013-04-08 | 2013-04-08 | Pythagorean theorem demonstrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320191748 CN203118294U (en) | 2013-04-08 | 2013-04-08 | Pythagorean theorem demonstrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203118294U true CN203118294U (en) | 2013-08-07 |
Family
ID=48898618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320191748 Expired - Fee Related CN203118294U (en) | 2013-04-08 | 2013-04-08 | Pythagorean theorem demonstrating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203118294U (en) |
-
2013
- 2013-04-08 CN CN 201320191748 patent/CN203118294U/en not_active Expired - Fee Related
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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: 20130807 Termination date: 20140408 |