# CN204010425U - 一种小学数学演示装置 - Google Patents

## Info

Publication number
CN204010425U
CN204010425U CN201420491439.4U CN201420491439U CN204010425U CN 204010425 U CN204010425 U CN 204010425U CN 201420491439 U CN201420491439 U CN 201420491439U CN 204010425 U CN204010425 U CN 204010425U
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China
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accommodation tube
symbol
operational symbol
operational
rotating disk
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Expired - Fee Related
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CN201420491439.4U
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English (en)
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Individual
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Individual
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Anticipated expiration legal-status Critical

## Landscapes

• Electrically Operated Instructional Devices (AREA)

## Description

1-底座 2-容纳筒C 3-等号符装置 4-容纳筒B 5-运算符转盘 6-容纳筒A 7-小圆球 8-支撑柱 9-写字板。

## Claims (2)

1.一种小学数学演示装置，包括有底座（1）、容纳筒A（6）、运算符装置、容纳筒B（4）、等号符装置（3）、容纳筒C（2）、写字板（9）和小圆球（7），其特征是，底座（1）上从左向右依次设置有容纳筒A（6）、运算符装置、容纳筒B（4）、等号符装置（3）和容纳筒C（2），所述容纳筒A（6）、容纳筒B（4）和容纳筒C（2）上端均为开口结构，采用透明的塑料材质，小圆球（7）根据运算情况选取适量放置在所述容纳筒A（6）、容纳筒B（4）和容纳筒C（2）中，所述运算符装置包括支撑柱（8）和运算符转盘（5），运算符转盘（5）为方体结构，所述运算符转盘（5）的四个同轴面上依次设有“＋、－、×、÷”符号，所述支撑柱（8）和运算符转盘（5）通过转轴连接，所述等号符装置（3）上设有“=”符号，所述底座（1）前侧面上设有写字板（9）。
2.根据权利要求1所述的一种小学数学演示装置，其特征在于，所述小圆球（7）采用透明材质制成，内部电路连接设置有纽扣电池、压力开关和LED灯。
CN201420491439.4U 2014-08-29 2014-08-29 一种小学数学演示装置 Expired - Fee Related CN204010425U (zh)

## Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420491439.4U CN204010425U (zh) 2014-08-29 2014-08-29 一种小学数学演示装置

## Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420491439.4U CN204010425U (zh) 2014-08-29 2014-08-29 一种小学数学演示装置

## Publications (1)

Publication Number Publication Date
CN204010425U true CN204010425U (zh) 2014-12-10

# Family

## Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420491439.4U Expired - Fee Related CN204010425U (zh) 2014-08-29 2014-08-29 一种小学数学演示装置

## Country Status (1)

CN (1) CN204010425U (zh)

## Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105243924A (zh) * 2015-10-16 2016-01-13 于璐菁 一种算术教学用辅助教具
CN108877412A (zh) * 2018-06-28 2018-11-23 沈金秀 一种数学教学用初级乘法出题装置

## Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105243924A (zh) * 2015-10-16 2016-01-13 于璐菁 一种算术教学用辅助教具
CN108877412A (zh) * 2018-06-28 2018-11-23 沈金秀 一种数学教学用初级乘法出题装置

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## Legal Events

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C14 Grant of patent or utility model
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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141210

Termination date: 20150829

EXPY Termination of patent right or utility model