JPS6384170U - - Google Patents
Info
- Publication number
- JPS6384170U JPS6384170U JP18019686U JP18019686U JPS6384170U JP S6384170 U JPS6384170 U JP S6384170U JP 18019686 U JP18019686 U JP 18019686U JP 18019686 U JP18019686 U JP 18019686U JP S6384170 U JPS6384170 U JP S6384170U
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- written
- triangle
- pascal
- bodies
- 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.)
- Granted
Links
Landscapes
- Drawing Aids And Blackboards (AREA)
Description
第１図及び第２図は本考案の一実施例を示して
おり、第１図は正面図であり、第２図は第１図の
Ａ―Ａ部拡大断面図である。第３図および第４図
は、他の考案の実施例を示す正面図である。
２……摺動シート、３……表面シート、３１…
…表示窓。
1 and 2 show an embodiment of the present invention, with FIG. 1 being a front view and FIG. 2 being an enlarged sectional view taken along the line AA in FIG. 1. 3 and 4 are front views showing other embodiments of the invention. 2...Sliding sheet, 3...Surface sheet, 31...
...display window.
Claims (1)
であり、表面側のシート状体３には、２つの数字
を加算または減算したものをｎ乗する二項定理の
式を、ｎの数が小さいものより上からパスカルの
数三角形を示すように順に並べて記し、＋−の符
号に相当する部分に表示窓３１を設け、その下の
シート状体２には、その表示窓３１と対応するす
る部分に＋−の符号を記し、該シート２を摺動可
能に構成することにより、２つの数字を加算また
は減算したものをｎ乗する二項定理の式のいずれ
かが表れるようにしたことを特徴とする数学教材
。 (2) シート状体を重ねた形状が、直角三角形を
しており、表面側のシート状体３にはパスカルの
数三角形が、直角の角を頂点として記されている
ことを特徴とする実用新案登録請求の範囲第１項
に記載の数学教材。[Claims for Utility Model Registration] (1) It is a stack of at least two sheet-like bodies, and the sheet-like body 3 on the front side has a two-dimensional value obtained by adding or subtracting two numbers to the nth power. The formulas of the theorem are written in order from the top to the one with the smallest number of n so as to show Pascal's number triangle, and a display window 31 is provided in the part corresponding to the +- sign, and the sheet-like body 2 below it is written. By marking + and - signs on the parts corresponding to the display window 31 and configuring the sheet 2 to be slidable, the expression of the binomial theorem, which raises or subtracts two numbers to the nth power. Mathematics teaching materials that are characterized by being made to show either one of them. (2) Practical use characterized in that the shape of the stacked sheet-like bodies is a right triangle, and Pascal's number triangle is written on the sheet-like body 3 on the front side with the right angle corner as the vertex. Mathematics teaching materials as set forth in paragraph 1 of the claims for new patent registration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18019686U JPH0248856Y2 (en) | 1986-11-21 | 1986-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18019686U JPH0248856Y2 (en) | 1986-11-21 | 1986-11-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6384170U true JPS6384170U (en) | 1988-06-02 |
| JPH0248856Y2 JPH0248856Y2 (en) | 1990-12-21 |
Family
ID=31123933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18019686U Expired JPH0248856Y2 (en) | 1986-11-21 | 1986-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248856Y2 (en) |
-
1986
- 1986-11-21 JP JP18019686U patent/JPH0248856Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0248856Y2 (en) | 1990-12-21 |
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