CN206718820U - A kind of math teaching tool for primary school - Google Patents
A kind of math teaching tool for primary school Download PDFInfo
- Publication number
- CN206718820U CN206718820U CN201720346668.0U CN201720346668U CN206718820U CN 206718820 U CN206718820 U CN 206718820U CN 201720346668 U CN201720346668 U CN 201720346668U CN 206718820 U CN206718820 U CN 206718820U
- Authority
- CN
- China
- Prior art keywords
- ruler
- fixed column
- primary school
- teaching tool
- chi body
- 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
Links
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of math teaching tool for primary school, including circle chi body, ruler is horizontally arranged with the middle part of circle chi body, ruler center is provided with cylindrical fixed column, fixed magnetite is provided with the inside of cylindrical fixed column, slide rail is equipped with the ruler of cylindrical fixed column both sides, be slidably connected chalk clamp in slide rail, connection support bar in cylindrical fixed column, circle chi body edges are provided with rotary handle, the utility model is simple in construction, it is convenient for carrying, it is easy to impart knowledge to students, the circle of different-diameter can be drawn, the sector of any radian, the concentric circles of arbitrary diameter, picture efficiency high, improve efficiency of teaching.
Description
Technical field
Mathematics teaching aid technical field is the utility model is related to, specially a kind of math teaching tool for primary school.
Background technology
With the development of society, the noveltyization of teaching method, in order to preferably improve the learning interest of pupil and
Enthusiasm, generally use teaching aid carries out aided education, and can promote quality of instruction；In the mathematical studying of pupil, learn
Can how measurement angle and to draw the angle with certain angle as requested or draw the circle of arbitrary diameter be to have to slap
The knowledge held.And in the prior art, the traditional compasses of circle generally use are drawn, the circle to draw different-diameter needs constantly to measure
Length and adjust, inconvenient for operation, efficiency of teaching is low, and draws concentric circles and be also required to just draw by multiple steps, draws
Figure efficiency is very low.
Utility model content
The purpose of this utility model is to provide a kind of math teaching tool for primary school, asked with solve to propose in above-mentioned background technology
Topic.
To achieve the above object, the utility model provides following technical scheme：A kind of math teaching tool for primary school, including circle chi
Body, the round chi body middle part are horizontally arranged with ruler, and the ruler center is provided with cylindrical fixed column, and the cylinder is solid
Fixed magnetite is provided with the inside of fixed column, slide rail, the interior company of slip of the slide rail are equipped with the ruler of the cylindrical fixed column both sides
Connect chalk clamp, connection support bar in the cylindrical fixed column, the round chi body edges are provided with rotary handle；
The chalk clamp includes chalk clamping cylinder, and compression compensation device, the compression are provided with the inside of the chalk clamping cylinder
Compensation device includes two pieces of rubber cushion blocks and compression spring, and the compression spring is fixedly installed between two pieces of rubber cushion blocks；
The size of the chalk clamping cylinder matches with chalk size.
Preferably, described round this outer rim of chi is equipped with radian scale value.
Preferably, the ruler is marked with scale value, and the scale value on the ruler of cylindrical fixed column both sides is opposite.
Preferably, the lower end of the ruler is additionally provided with horizontal bead.
Preferably, a diameter of 30cm-40cm of the round chi body.
Preferably, the radian scale value scope is 0 ° -360 °.
Preferably, it is fixed with locator card in the slide rail.
Compared with prior art, the beneficial effects of the utility model are：The utility model is simple in construction, is convenient for carrying, just
In teaching, the concentric circles of the circle of different-diameter, the sector of any radian, arbitrary diameter can be drawn, picture efficiency high, improves religion
Learn efficiency；The chalk clamp set in addition can clamp the chalk of different length, reduce chalk replacement frequency, further increase picture
Figure efficiency.
Brief description of the drawings
Fig. 1 is the utility model top view；
Fig. 2 is that press-powder pen clip of the present utility model holds barrel structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of math teaching tool for primary school, including circle chi body
1, a diameter of 30cm-40cm of circle chi body 1；The outward flange of circle chi body 1 is all provided with cambered scale value 13, the model of radian scale value 13
Enclose for 0 ° -360 °；The middle part of round chi body 1 is horizontally arranged with ruler 2, and the center of ruler 2 is provided with cylindrical fixed column 3,
The inner side of cylindrical fixed column 3 is provided with fixed magnetite 4；Ruler 2 is marked with scale value 14, and the both sides of cylindrical fixed column 3
Scale value on ruler 2 is opposite；The lower end of ruler 2 is additionally provided with horizontal bead 15, sets horizontal bead, facilitates teacher to see whether in water
Drawn in plane；Slide rail 5 is equipped with the ruler of the both sides of cylindrical fixed column 3, locator card is fixed with slide rail 5；Institute
The chalk clamp 6 that is slidably connected in slide rail 5 is stated, locator card can fix chalk clamp, convenient to draw；The cylindrical fixed column 3
Upper connection support bar 7, the round edge of chi body 1 are provided with rotary handle 8；
Chalk clamp 6 includes chalk clamping cylinder 9, and the inner side of chalk clamping cylinder 9 is provided with compression compensation device 10, the compression
Compensation device 10 includes two pieces of rubber cushion blocks 11 and compression spring 12, and the compression spring 12 is fixedly installed on two pieces of rubber cushion blocks
Between 11；The size of the chalk clamping cylinder 9 matches with chalk size.
In use, circle chi body central is adsorbed on blackboard, horizontal bead is horizontal, afterwards fixes chalk
In chalk clamp, promote chalk clamp to slide into corresponding scale value position in slide rail, locator card grips chalk, latter
Hand catches support bar, and another hand catches rotary handle to carry out picture circle, and the circle of respective radius is drawn on blackboard, concentric to draw
Circle, then chalk is fixed in the chalk clamp of ruler both sides, concentric circles can be drawn by then carrying out same operation, very convenient.
The utility model is simple in construction, is convenient for carrying, and is easy to impart knowledge to students, and can draw circle, the fan of any radian of different-diameter
The concentric circles of shape, arbitrary diameter, picture efficiency high, improves efficiency of teaching；The chalk clamp set in addition can clamp different length
The chalk of degree, chalk replacement frequency is reduced, further increases picture efficiency.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of math teaching tool for primary school, including circle chi body（1）, it is characterised in that：The round chi body（1）Middle part is laterally set
It is equipped with ruler（2）, the ruler（2）Center is provided with cylindrical fixed column（3）, the cylindrical fixed column（3）Inner side is provided with solid
Determine magnetite（4）, the cylindrical fixed column（3）Slide rail is equipped with the ruler of both sides（5）, the slide rail（5）Inside it is slidably connected
Chalk clamp（6）, the cylindrical fixed column（3）Upper connection support bar（7）, the round chi body（1）Edge is provided with rotary handle
（8）；
The chalk clamp（6）Including chalk clamping cylinder（9）, the chalk clamping cylinder（9）Inner side is provided with compression compensation device（10）,
The compression compensation device（10）Including two pieces of rubber cushion blocks（11）And compression spring（12）, the compression spring（12）Fixation is set
Put in two pieces of rubber cushion blocks（11）Between；
The chalk clamping cylinder（9）Size match with chalk size.
A kind of 2. math teaching tool for primary school according to claim 1, it is characterised in that：The round chi body（1）Outward flange is equal
Provided with radian scale value（13）.
A kind of 3. math teaching tool for primary school according to claim 1, it is characterised in that：The ruler（2）It is marked with scale value
（14）, and cylindrical fixed column（3）The ruler of both sides（2）On scale value it is opposite.
A kind of 4. math teaching tool for primary school according to claim 1, it is characterised in that：The ruler（2）Lower end be additionally provided with
Horizontal bead（15）.
A kind of 5. math teaching tool for primary school according to claim 1, it is characterised in that：The round chi body（1）It is a diameter of
30cm-40cm。
A kind of 6. math teaching tool for primary school according to claim 2, it is characterised in that：The radian scale value（13）Scope is
0°-360°。
A kind of 7. math teaching tool for primary school according to claim 1, it is characterised in that：The slide rail（5）It is fixed to be inside fixed with
Position card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346668.0U CN206718820U (en) | 2017-04-05 | 2017-04-05 | A kind of math teaching tool for primary school |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346668.0U CN206718820U (en) | 2017-04-05 | 2017-04-05 | A kind of math teaching tool for primary school |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206718820U true CN206718820U (en) | 2017-12-08 |
Family
ID=60503709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720346668.0U Expired - Fee Related CN206718820U (en) | 2017-04-05 | 2017-04-05 | A kind of math teaching tool for primary school |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206718820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677169A (en) * | 2019-02-24 | 2019-04-26 | 邹月娥 | It is a kind of for making the compasses of hand-made paper |
-
2017
- 2017-04-05 CN CN201720346668.0U patent/CN206718820U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677169A (en) * | 2019-02-24 | 2019-04-26 | 邹月娥 | It is a kind of for making the compasses of hand-made paper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20210405 |