CN203825882U - Switching teaching tool for two mathematics statistical charts - Google Patents
Switching teaching tool for two mathematics statistical charts Download PDFInfo
- Publication number
- CN203825882U CN203825882U CN201420236952.9U CN201420236952U CN203825882U CN 203825882 U CN203825882 U CN 203825882U CN 201420236952 U CN201420236952 U CN 201420236952U CN 203825882 U CN203825882 U CN 203825882U
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- CN
- China
- Prior art keywords
- pin
- blocking rod
- bar chart
- statistical graph
- blocking
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- Expired - Fee Related
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Abstract
The utility model relates to the mathematic teaching technology field and consists of an organic glass plate cabinet, a circular ring, small balls and blocking rods. The circular ring showing a pie diagram and a vertical coordinate blocking rod and a horizontal coordinate blocking rod which are used for showing the bar chart are welded on a bottom plate of the cuboid organic glass plate cabinet; the blocking rod grooves are arranged on the circular ring toward the centre of the cycle; the quantity of the blocking rods is 4-7 and the blocking rod is L-shaped; the blocking rods of the bar chart are arranged in parallel with the vertical coordinate blocking rod and are arrayed with equal intervals and are perpendicular and connected to the horizontal coordinate blocking rod; a bottom plate parallel with the horizontal coordinate is provided with scale lines; and the diameter of the small balls is slightly smaller than the distance between the bottom plate and the cover plate of the cuboid organic glass plate cabinet. Compared with the prior art, the switching point between the pie diagram and the bar chart can be directly seen through the small balls moving between the pie diagram and the bar chart, so that the switching teaching tool for two mathematics statistical charts is simple in structure, easy to manufacture, demonstrate and use, and is a mathematic teaching tool with promotional value.
Description
Technical field
The utility model relates to a kind of mathematics teaching aid, is that two kinds of mathematical statistics figure change teaching aid specifically.
Background technology
In mathematical studying, need to understand common statistical graph, wherein, fan-shaped statistical graph and bar shaped statistical graph are two kinds of more common statistical graphs.Fan-shaped statistical graph is to represent sum (unit " 1 ") with whole circle, represents that with justifying interior each fan-shaped size each several part amount accounts for a few percent of total amount, and in fan-shaped statistical graph, the number percent sum of each several part is unit " 1 ".Can very clearly express the relation between partial amt and sum by fan-shaped statistical graph.Different from bar shaped statistical graph, can not be easy to find out the number of various quantity.Bar shaped statistical graph is to represent certain quantity by a unit length, is drawn as according to the number of quantity the vertical bar that length is different, then these vertical bars is lined up in sequence.From bar shaped statistical graph, be easy to find out the number of various quantity.Bar shaped statistical graph is the size that represents quantity by the length of bar shaped, is convenient to comparison.How these two kinds of statistical graphs are changed and compare, and how to display visually, cultivate student's interest, also there is no at present this respect teaching aid intuitively.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, provides two kinds of mathematical statistics figure to change teaching aid.
The purpose of this utility model realizes by following technological means: two kinds of mathematical statistics figure change teaching aid, formed by rectangular parallelepiped poly (methyl methacrylate) plate chest, annulus, little ball and pin, above rectangular parallelepiped poly (methyl methacrylate) plate chest base plate, be welded with the annulus that represents fan-shaped statistical graph and ordinate pin, the horizontal ordinate pin that represents bar shaped statistical graph; Anchor ring has pin groove to the direction of circle center hole; Pin is 4～7 of " L " type, and long section equals the radius of annulus; One end is inserted into circle center hole, and one end is stuck in pin groove in addition, circle is divided into several are fan-shaped, and then forms pie chart; Ordinate pin and bar shaped statistical graph pin parallel equidistant are from arranging and vertical being connected on horizontal ordinate pin; On the base plate parallel with horizontal ordinate, be decorated with scale mark.
As preferably, the diameter of little ball is slightly less than the distance between rectangular parallelepiped poly (methyl methacrylate) plate chest base plate and overlay.
As preferably, the little ball that little ball is big or small identical different color.
Further, little ball can pick and place in pie chart and bar shaped statistical graph.
Compared with existing form of teaching, the utility model is the movement between pie chart and bar shaped statistical graph by little ball, can see intuitively the transfer point between pie chart and bar shaped statistical graph, there is features simple structure, be easy to make and explanation, easy to use, be a kind of mathematics teaching aid that has very much promotional value.
Brief description of the drawings
Fig. 1 is the utility model schematic diagram.
Wherein 1. rectangular parallelepiped poly (methyl methacrylate) plate chests, 2. base plate, 3. overlay, 4. annulus, 5. pin, 6. circle center hole, 7. pin groove, 8. little ball, 9. ordinate pin, 10. horizontal ordinate pin, 11. bar shaped statistical graph pins, 12. scale marks.
Embodiment
Below in conjunction with brief description of the drawings, the utility model is described in further detail:
The use procedure that these two kinds of mathematical statistics figure change teaching aid is: pin 5 is divided into fan-shaped that several vary in size according to the requirement of pie chart by annulus 4, the roundlet ball 8 of different colours be filled into each fan-shaped in, represented the statistical conditions in pie chart; Then the roundlet ball 8 of zones of different is transferred to respectively in the cylindrical space that bar shaped statistical graph is corresponding again, can be seen the distribution situation in bar shaped statistical graph, and then demonstrated the conversion between pie chart and bar shaped statistical graph.
In a word, the utility model provides two kinds of mathematical statistics figure to change teaching aid.The above; it is only a part of embodiment of the present utility model; protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. two kinds of mathematical statistics figure change teaching aid, formed by rectangular parallelepiped poly (methyl methacrylate) plate chest (1), annulus (4), little ball (8) and pin (5), it is characterized in that: rectangular parallelepiped poly (methyl methacrylate) plate chest (1) base plate (2) is welded with the annulus (4) that represents fan-shaped statistical graph and ordinate pin (9), the horizontal ordinate pin (10) that represents bar shaped statistical graph above; Annulus (4) has pin groove (7) towards the direction of circle center hole (6); Pin (5) is 4～7 of " L " type, and long section equals the radius of annulus (4); Ordinate pin (9) and bar shaped statistical graph pin (11) parallel equidistant are from arranging and vertical being connected on horizontal ordinate pin (10).
2. two kinds of mathematical statistics figure according to claim 1 change teaching aid, it is characterized in that: the diameter of little ball (8) is slightly less than the distance between rectangular parallelepiped poly (methyl methacrylate) plate chest (1) base plate (2) and overlay (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236952.9U CN203825882U (en) | 2014-05-11 | 2014-05-11 | Switching teaching tool for two mathematics statistical charts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236952.9U CN203825882U (en) | 2014-05-11 | 2014-05-11 | Switching teaching tool for two mathematics statistical charts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203825882U true CN203825882U (en) | 2014-09-10 |
Family
ID=51481356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420236952.9U Expired - Fee Related CN203825882U (en) | 2014-05-11 | 2014-05-11 | Switching teaching tool for two mathematics statistical charts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203825882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109493689A (en) * | 2018-12-14 | 2019-03-19 | 李智杰 | Fan-shaped statistical chart demonstration teaching board for management |
-
2014
- 2014-05-11 CN CN201420236952.9U patent/CN203825882U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109493689A (en) * | 2018-12-14 | 2019-03-19 | 李智杰 | Fan-shaped statistical chart demonstration teaching board for management |
| CN109493689B (en) * | 2018-12-14 | 2021-02-02 | 李智杰 | Fan-shaped statistical chart demonstration teaching board for management |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140910 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |