CN203713333U - Multifunctional mathematical teaching aid - Google Patents

Multifunctional mathematical teaching aid Download PDF

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Publication number
CN203713333U
CN203713333U CN201320836117.4U CN201320836117U CN203713333U CN 203713333 U CN203713333 U CN 203713333U CN 201320836117 U CN201320836117 U CN 201320836117U CN 203713333 U CN203713333 U CN 203713333U
Authority
CN
China
Prior art keywords
protractor
main scale
ruler
teaching aid
chute
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
Application number
CN201320836117.4U
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Chinese (zh)
Inventor
杜书勤
Original Assignee
杜书勤
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 杜书勤 filed Critical 杜书勤
Priority to CN201320836117.4U priority Critical patent/CN203713333U/en
Application granted granted Critical
Publication of CN203713333U publication Critical patent/CN203713333U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a multifunctional mathematical teaching aid, comprising a main ruler and an angle ruler, wherein the angle ruler is fixed on the main ruler through a rotating shaft, a rule groove is formed in the main ruler, a length graduation ruler and an angle gauge are arranged on the main ruler, a chute is arranged between the angle gauge and the length graduation ruler, a slider is arranged on the chute, a chalk sleeve hole and a radius pointer are arranged on the slider, a fulcrum shaft is arranged beside one end of the chute and is flush with the chalk sleeve hole, one end of the main ruler is provided with an LED (light-emitting diode) lamp, the LED lamp is connected with a button battery which is arranged in the main ruler, and a switch is arranged between the LED lamp and the button battery. According to the multifunctional mathematical teaching aid, the angle ruler can be used for drawing an arc, the drawing is precise, and the use is convenient; the radius of a circle needing to be drawn is acquired through moving the slider, and then the circle can be drawn through fixing the slider by a locking pin on the slider, the use is convenient, and the drawing is precise; the LED lamp can be used as a teaching indicator lamp, so that the multifunctional mathematical teaching aid has more functions, and can be used for replacing multiple tools in the teaching process.

Description

A kind of Multifunctional math teaching aid
Technical field
The utility model relates to educational aid technical field, is specifically related to a kind of apparatus for primary school math teaching.
Background technology
In primary school math teaching process, often will be on blackboard the figure such as draw circles, angle, in conventional teaching, conventionally adopt and draw circle with a compass, adopt compasses, protractor, ruler etc. to coordinate picture angle, this picture mode efficiency is low, accurate not, is unfavorable for cultivating the rigorous attitude towards study of student, and to carry multiple types of tools in teaching process, use inconvenience.For this reason, people have invented various aided education instruments, invent one " Combined scale for mathematics teaching " if any people, and this " Combined scale for mathematics teaching " arranges rotatable bevel protractor in order to draw angle in a ruler, and justify line with picture and tie a chalk sleeve in order to draw circle.Base shortcoming is, bevel protractor can only 90-degree rotation, draws angle still convenient not; Draw circle with line bundle chalk sleeve inconvenient, simultaneously also accurate not, and the function singleness of this combination ruler.
Utility model content
The utility model, for the defect of prior art, provides a kind of simple in structure, easy to use, accurate Multifunctional math teaching aid of drawing.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of Multifunctional math teaching aid, comprise main scale and bevel protractor, and bevel protractor is fixed on main scale by turning cylinder, and main scale is provided with the chi groove for accommodating bevel protractor; Main scale is provided with length rule and protractor, protractor is positioned at the centre position of main scale, turning cylinder is positioned at the circle centre position of the semicircle of protractor formation, on bevel protractor, there is angle indicator, angle indicator points to the scale of protractor, it is characterized in that: the position between protractor and length rule is provided with chute, and chute is provided with slide block, slide block is provided with chalk trepanning and radius pointer, radius pointed length rule; Wherein be provided with fulcrum shaft in the side of one end at chute, fulcrum shaft flushes with chalk trepanning; Be provided with LED lamp in one end of main scale, LED lamp connects button cell, and button cell is installed in main scale, between LED lamp and button cell, is provided with switch, and it can be used as in teaching indicator lamp, and function class is similar to laser pen.
Further, described protractor is located on transparent windows, and bevel protractor is positioned at after transparent windows.
Further, described bevel protractor is can 180 modes of spending rotation being fixed on main scale; The length of described chi groove is greater than the twice of bevel protractor length.
Further, the front portion of described bevel protractor is provided with chalk trepanning, can be for drawing circular arc.
Further, on slide block, be provided with the stop pin that can be fixed on chute.
The beneficial effects of the utility model are: bevel protractor can, for drawing circular arc, be drawn accurately, easy to use; Need to draw radius of a circle by moving slider to obtain, then by the fixing picture circle that gets final product of the stop pin on slide block, easy to use, draw accurately; And LED lamp on it can be used for as teaching indicator lamp, thereby there is more function, can be many with a generation in teaching process.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure, 1 is main scale, and 2 is bevel protractor, and 3 is chi groove, and 4 is turning cylinder, and 5 is transparent windows, 6 is protractor, and 7 is chute, and 8 is slide block, and 9 is fulcrum shaft, and 10 is chalk trepanning, 11 is button cell, and 12 is LED lamp, and 13 is angle indicator, and 14 is radius pointer, and 15 is chalk trepanning.
Detailed description of the invention
In the present embodiment, with reference to Fig. 1, described Multifunctional math teaching aid, comprises main scale 1 and bevel protractor 2, and bevel protractor 2 is fixed on main scale 1 by turning cylinder 4, and main scale 1 is provided with the chi groove 3 for accommodating bevel protractor 2; Main scale 1 is provided with length rule and protractor 6, and protractor 6 is positioned at the centre position of main scale 1, and turning cylinder 4 is positioned at the circle centre position of the semicircle that protractor 6 forms, and has angle indicator 13 on bevel protractor 2, and angle indicator 13 points to the scale of protractor 6; Position between protractor 6 and length rule is provided with chute 7, and chute 7 is provided with sliding 8, and slide block 8 is provided with chalk trepanning 10 and radius pointer 14, and radius pointer 14 points to length rule; Wherein be provided with fulcrum shaft 9 in the side of one end at chute 7, fulcrum shaft 9 flushes with chalk trepanning 10, and fulcrum shaft 9 is for the center of circle as draw circles; Be provided with LED lamp 12 in one end of main scale 1, LED lamp 12 connects button cell 11, and button cell 11 is installed in main scale 1, is provided with switch (not shown) between LED lamp 12 and button cell 11, and LED lamp 11 can be used as in teaching indicator lamp, and function class is similar to laser pen.
Described protractor 6 is located on transparent windows 5, and bevel protractor 2 is positioned at after transparent windows 5.
Described bevel protractor 2 is can 180 modes of spending rotation being fixed on main scale 1; The length of described chi groove 3 is greater than the twice of bevel protractor 2 length, makes bevel protractor turn to which limit can put into chi groove 3.
The front portion of described bevel protractor 2 is provided with chalk trepanning 15, can be for drawing circular arc.
On slide block 8, be provided with the stop pin (not shown) that can be fixed on chute 7.
Below the utility model is described in detail, the above is only the preferred embodiment of the utility model, when not limiting the application's practical range, be allly to do impartial change and modify according to the application's scope, all should still belong in the utility model covering scope.

Claims (5)

1. a Multifunctional math teaching aid, comprises main scale and bevel protractor, and bevel protractor is fixed on main scale by turning cylinder, and main scale is provided with the chi groove for accommodating bevel protractor; Main scale is provided with length rule and protractor, protractor is positioned at the centre position of main scale, turning cylinder is positioned at the circle centre position of the semicircle of protractor formation, on bevel protractor, there is angle indicator, angle indicator points to the scale of protractor, it is characterized in that: the position between protractor and length rule is provided with chute, and chute is provided with slide block, slide block is provided with chalk trepanning and radius pointer, radius pointed length rule; Wherein be provided with fulcrum shaft in the side of one end at chute, fulcrum shaft flushes with chalk trepanning; Be provided with LED lamp in one end of main scale, LED lamp connects button cell, and button cell is installed in main scale, between LED lamp and button cell, is provided with switch.
2. Multifunctional math teaching aid according to claim 1, is characterized in that: described protractor is located on transparent windows, and bevel protractor is positioned at after transparent windows.
3. Multifunctional math teaching aid according to claim 1, is characterized in that: described bevel protractor is can 180 modes of spending rotation being fixed on main scale; The length of described chi groove is greater than the twice of bevel protractor length.
4. Multifunctional math teaching aid according to claim 1, is characterized in that: the front portion of described bevel protractor is provided with chalk trepanning.
5. Multifunctional math teaching aid according to claim 1, is characterized in that: on slide block, be provided with the stop pin that can be fixed on chute.
CN201320836117.4U 2013-12-18 2013-12-18 Multifunctional mathematical teaching aid Expired - Fee Related CN203713333U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320836117.4U CN203713333U (en) 2013-12-18 2013-12-18 Multifunctional mathematical teaching aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320836117.4U CN203713333U (en) 2013-12-18 2013-12-18 Multifunctional mathematical teaching aid

Publications (1)

Publication Number Publication Date
CN203713333U true CN203713333U (en) 2014-07-16

Family

ID=51152523

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320836117.4U Expired - Fee Related CN203713333U (en) 2013-12-18 2013-12-18 Multifunctional mathematical teaching aid

Country Status (1)

Country Link
CN (1) CN203713333U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150720A (en) * 2015-09-18 2015-12-16 华北水利水电大学 Multifunctional plotting board
CN105904885A (en) * 2016-05-22 2016-08-31 湖南城市学院 Teaching ruler for mathematics
CN106585220A (en) * 2016-12-20 2017-04-26 张运 Full-automatic portable multifunctional ruler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105150720A (en) * 2015-09-18 2015-12-16 华北水利水电大学 Multifunctional plotting board
CN105904885A (en) * 2016-05-22 2016-08-31 湖南城市学院 Teaching ruler for mathematics
CN106585220A (en) * 2016-12-20 2017-04-26 张运 Full-automatic portable multifunctional ruler

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140716

Termination date: 20141218

EXPY Termination of patent right or utility model