Negative quadratic power function demonstration and image drawing instrument
An image drawing and power-of-two technology, applied in the field of teaching, can solve problems such as natural isolation, students' learning difficulties, and no negative power-of-two function, and achieve the effect of complete functions, simple operation, and strong applicability
Inactive Publication Date: 2020-11-17
NANJING VOCATIONAL UNIV OF IND TECH
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Problems solved by technology
[0002] The function whose analytical formula is y=cx-2 is the most basic function discovered by human beings and will continue to be used in the future. It is the most important content of middle and advanced mathematics research. It has important characteristics. When teachers teach, there are no suitable physical teaching aids and geometry. Guided by scenarios, it is easy to cause the natural separation of the function formation reason and the function image, which makes many students feel very difficult in learning, and aggravates the double difficulties of teaching and learning
There are only a few demonstration devices of simple power functions on the market now, and there are no proprietary teaching aids for negative quadratic power functions
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[0021] As shown in the figure, the negative power of two function demonstration and image drawing instrument includes: a bracket 1, a steering wheel 2, an orientation float 6, an opposing brush 7, a drawing board 8, and a cuboid deformer 9. The steering wheel 2 is placed on the lower part of the support 1, the cuboid deformer 9 is placed on the steering wheel 2, the directional float 6 is placed on the cuboid deformer 9, and the opposite paintbrush 7 is placed on the directional float 6, The drawing board 8 is placed in the middle of the support 1 .
[0022] Described support 1 comprises support bottom plate 11, support top plate 12, upright bar 13 and adjusting foot 14, and described support bottom plate 11 and support top plate 12 are identical rectangular hard plates, and the outer corner of described support bottom plate 11 and support top plate 12 Vertical poles 13 are provided, the lower ends of the four poles 13 are respectively provided with adjusting feet 14, the fron...
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The invention discloses a negative quadratic power function demonstration and image drawing instrument. The negative quadratic power function demonstration and image drawing instrument is characterized by comprising a support, a steering wheel, a directional buoy, an opposite direction paintbrush, a drawing board and a cuboid deformer, wherein the steering wheel is arranged on the lower portion ofthe support, the cuboid deformer is arranged on the steering wheel, the directional buoy is arranged on the cuboid deformer, the opposite direction paintbrush is arranged on the directional buoy, andthe drawing board is arranged in the middle of the support. The negative quadratic power function demonstration and image drawing instrument are complete in function, can complete relation demonstration, characteristic analysis and image drawing of a function y = cx2 in a controllable numerical value range, and visually expresses the property of the function and the actual meaning of parameters,the structure is compact, cost is low, carrying is convenient, precision is high, time and labor are saved, the negative quadratic power function demonstration and image drawing instrument is high inapplicability, and demonstration and drawing can be conducted on various occasions.
Description
Technical field: [0001] The invention belongs to the teaching field, and in particular relates to a negative quadratic power function demonstration and an image plotter. Background technique: [0002] The function whose analytical formula is y=cx-2 is the most basic function discovered by human beings and will continue to be used in the future. It is the most important content of middle and advanced mathematics research. It has important characteristics. When teachers teach, there are no suitable physical teaching aids and geometry. Guided by scenarios, it is easy to cause the natural separation of the cause of function formation and the function image, which makes many students feel very difficult in learning, and aggravates the dual difficulties of teaching and learning. There are only a few demonstration devices of simple power functions on the market now, and there are no special teaching aids about negative quadratic power functions. Therefore, there is a need for a de...
Claims
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IPC IPC(8): B43L13/00
CPCB43L13/001
Inventor 王书营
Owner NANJING VOCATIONAL UNIV OF IND TECH