CN203142171U - Multi-purpose ruler for mathematics teaching - Google Patents
Multi-purpose ruler for mathematics teaching Download PDFInfo
- Publication number
- CN203142171U CN203142171U CN 201320166716 CN201320166716U CN203142171U CN 203142171 U CN203142171 U CN 203142171U CN 201320166716 CN201320166716 CN 201320166716 CN 201320166716 U CN201320166716 U CN 201320166716U CN 203142171 U CN203142171 U CN 203142171U
- Authority
- CN
- China
- Prior art keywords
- ruler
- arc
- arc chi
- protractor
- mathematical education
- 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
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Abstract
The utility model discloses a multi-purpose ruler for mathematics teaching. The multi-purpose ruler comprises a main ruler, an arc drawing ruler and a chalk clamp. The main ruler comprises a straight ruler and a protractor which is arranged on the lower side of the straight ruler. The zero gradation end of the arc drawing ruler is movably connected to the straight ruler, the arc drawing ruler is provided with a sliding groove with the central axis of the arc drawing ruler as the center, and the chalk clamp is movably arranged inside the sliding groove. The multi-purpose ruler is simple in structure and convenient to use, greatly improves construction efficiency and construction precision in high school mathematics teaching activities, realizes the combination of rulers and compasses, and provides convenience for the mathematics activities.
Description
Technical field
The utility model relates to a kind of high school mathematics teaching apparatus, particularly a kind of mathematical education multipurpose ruler.
Background technology
When math teacher is given lessons in teaching; particularly in professor's geometry and related discipline thereof; usually can use the multiple aid that comprises ruler, set square, protractor and compasses etc., these instruments all are separate, and function singleness; need in use to exchange continually; carry inconvenience, physical labor intensity is big, has not only increased the drawing difficulty; also increase teacher's workload, and influenced the precision of drawing.
Summary of the invention
The utility model disclosed mathematical education multipurpose ruler, simple in structure, easy to use, realize high school mathematics teaching with the multifunction of chi and integrated, thereby made things convenient for teaching to draw, improved drawing efficiency.
The disclosed mathematical education multipurpose ruler of the utility model, comprise main scale, make arc chi and chalk card, the protractor that described main scale comprises ruler and is arranged on the ruler downside, the described zero mark end of making the arc chi flexibly connects on the ruler, the described arc chi of doing is provided with to do chute centered by the arc chi axis, and described chalk card is movably arranged in the chute.The utility model is simple in structure, easy to use, it is firm that quality connects, be convenient in the mathematical education activity, carry out drafting and the demonstration of line, angle, arc and circle etc., and do not need the different drawing tools of frequent substitution, and reduced the difficulty of drawing performance, greatly improved efficient and the precision of mapping in the high school mathematics teaching activity, realized the merging of chi and compasses, for education activities provide convenience.
A kind of improvement of the disclosed mathematical education multipurpose ruler of the utility model, described protractor are arranged on the zero degree line of an end of ruler and protractor and ruler downside end face on same straight line.This improvement by protractor is set the zero graduation line and the downside end face of ruler on same straight line, to school precision height, be conducive to improve precision and the efficient of camber line picture operation.
Another of the disclosed mathematical education multipurpose ruler of the utility model improved, and the described zero mark end activity of making the arc chi is fixed on the other end of ruler.This improvement is movably arranged on the other end of ruler by the zero mark end that will make the arc chi, not only is conducive to simplify the structure of multipurpose ruler, reduces production costs, and has also made things convenient for simultaneously and has made the picture circular arc, has improved precision and the efficient of picture operation.
Another of the disclosed mathematical education multipurpose ruler of the utility model improved, and describedly makes the zero graduation that the arc chi is provided with locating hole with the junction of ruler and makes the arc chi and overlaps with the center of locating hole.This improvement is by the locating hole that arranges and the zero graduation of making the arc chi is set overlaps with the center of locating hole, uses easy to operately, has improved when mapping efficient, and also the repeatability of the affirmation by definite center of circle has improved the precision of arc drafting.
The disclosed mathematical education multipurpose ruler of the utility model, simple in structure, easy to use, by the ruler, the protractor that arrange and make the arc chi, realized the efficient accurate Drawing of the conventional pattern forms of mathematical education such as straight line, angle, arc and circle, avoid the frequent substitution between the various teaching apparatus in education activities simultaneously, thereby improved the convenience of education activities.
Description of drawings
The structural representation of Fig. 1, the disclosed mathematical education multipurpose ruler of the utility model.
Reference numerals list:
1, ruler; 2, protractor; 3, make the arc chi;
4, chute; 5, chalk card; 6, locating hole.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand the following specific embodiment and only be used for explanation the utility model and be not used in restriction scope of the present utility model.Need to prove, word " preceding ", " back ", " left side ", " right side ", the "up" and "down" used are described below refer to the direction in the accompanying drawing, word " interior " and " outward " refer to respectively towards or away from the direction of specific features geometric center.
As shown in Figure 1, the disclosed mathematical education multipurpose ruler of the utility model, comprise main scale, make arc chi 3 and chalk card 5, the protractor 2 that described main scale comprises ruler 1 and is arranged on ruler 1 downside, the described zero mark end of making arc chi 3 flexibly connects on the ruler 1, the described arc chi 3 of doing is provided with to do chute centered by arc chi 3 axis, and described chalk card 5 is movably arranged in the chute 4.The utility model is simple in structure, easy to use, it is firm that quality connects, be convenient in the mathematical education activity, carry out drafting and the demonstration of line, angle, arc and circle etc., and do not need the different drawing tools of frequent substitution, and reduced the difficulty of drawing performance, greatly improved efficient and the precision of mapping in the high school mathematics teaching activity, realized the merging of chi and compasses, for education activities provide convenience.
As a kind of preferred, described protractor 2 is arranged on the zero degree line of an end of ruler 1 and protractor 2 and ruler 1 downside end face on same straight line.Zero graduation line by protractor is set and the downside end face of ruler to school precision height, are conducive to improve precision and the efficient of camber line picture operation on same straight line.
As a kind of preferred, the described zero mark end activity of making arc chi 3 is fixed on the other end of ruler 1.Be movably arranged on the other end of ruler by the zero mark end that will make the arc chi, not only be conducive to simplify the structure of multipurpose ruler, reduce production costs, also made things convenient for simultaneously and made the picture circular arc, improved precision and the efficient of picture operation.
As a kind of preferred, describedly make the zero graduation that arc chi 3 is provided with locating hole 6 with the junction of ruler 1 and makes arc chi 3 and overlap with the center of locating hole 6.By the locating hole that arranges and the zero graduation of making the arc chi is set overlaps with the center of locating hole, use easy to operately, improved when mapping efficient, also the repeatability of the affirmation by definite center of circle has improved the precision of arc drafting.
In education activities, open making arc chi 3 and can carry out the drafting of arc or circle by chalk card 4 selected suitable scales on the ruler 1, the suitable chalk of installation length can position the center of circle in locating hole 6 simultaneously, thereby has improved precision and the efficient of drawing.
The disclosed mathematical education multipurpose ruler of the utility model, simple in structure, easy to use, by the ruler, the protractor that arrange and make the arc chi, realized the efficient accurate Drawing of the conventional pattern forms of mathematical education such as straight line, angle, arc and circle, avoid the frequent substitution between the various teaching apparatus in education activities simultaneously, thereby improved the convenience of education activities.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme of being made up of above technical characterictic any combination.The above is the specific embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (4)
1. mathematical education multipurpose ruler, it is characterized in that: comprise main scale, make arc chi and chalk card, the protractor that described main scale comprises ruler and is arranged on the ruler downside, the described zero mark end of making the arc chi flexibly connects on the ruler, the described arc chi of doing is provided with to do chute centered by the arc chi axis, and described chalk card is movably arranged in the chute.
2. mathematical education multipurpose ruler according to claim 1 is characterized in that: described protractor is arranged on the zero degree line of an end of ruler and protractor and ruler downside end face on same straight line.
3. mathematical education multipurpose ruler according to claim 1 and 2, it is characterized in that: the described zero mark end activity of making the arc chi is fixed on the other end of ruler.
4. mathematical education multipurpose ruler according to claim 3 is characterized in that: describedly make the zero graduation that the arc chi is provided with locating hole with the junction of ruler and makes the arc chi and overlap with the center of locating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166716 CN203142171U (en) | 2013-04-07 | 2013-04-07 | Multi-purpose ruler for mathematics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320166716 CN203142171U (en) | 2013-04-07 | 2013-04-07 | Multi-purpose ruler for mathematics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203142171U true CN203142171U (en) | 2013-08-21 |
Family
ID=48969723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320166716 Expired - Fee Related CN203142171U (en) | 2013-04-07 | 2013-04-07 | Multi-purpose ruler for mathematics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203142171U (en) |
-
2013
- 2013-04-07 CN CN 201320166716 patent/CN203142171U/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: 20130821 Termination date: 20140407 |