Combined type solid geometry teaching instrument
A technology of three-dimensional geometry and teaching instruments, applied in teaching models, instruments, educational appliances, etc., can solve problems such as inability to draw three-dimensional geometric figures on the surface, and achieve the effect of accurate three-dimensional geometric figures, low error, and convenient learning
Active Publication Date: 2016-07-13
山东火炬中原技术市场管理有限公司
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Problems solved by technology
[0004] The invention provides a combined three-dimensional geometry mathematics teaching instrument, which solves the problem that the geometry teaching instrument disclosed in Chinese patent document CN200997200Y cannot draw on the surface of three-dimensional geometric figures
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[0013] The present invention will be described in detail below with the best embodiment.
[0014] Such as Figure 1-2 As shown, the combined three-dimensional geometry mathematics teaching instrument includes a base 1, a lateral moving device 3, a vertical moving device 10, a moving guide rod 15, a paintbrush 17, a controller 18, a computer 19, a three-dimensional geometry model rotating motor 20 and a three-dimensional geometry model. Model 23; the base 1 is a structure with grooves in the middle and steps on the left and right sides; guide slides 2 are respectively arranged on the left and right steps of the base 1, and the two guide slides 2 are parallel to each other; Be provided with mobile guide bar 15; Slide block 9 is fixed respectively below the two ends of mobile guide bar 15, and slide block 9 forms sliding fit with guide slideway 2; Transversal moving device 3 is installed on the left end of mobile guide bar 15, moves guide A longitudinal moving device 10 is also ...
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The invention discloses a combined type solid geometry teaching instrument, and relates to the field of mathematical teaching equipment, especially a combined type solid geometry teaching instrument. The combined type solid geometry teaching instrument includes a pedestal, a horizontal movement apparatus, a longitudinal movement apparatus, a mobile guide bar, a paintbrush, a controller, a computer, a solid geometry model rotation motor and a solid geometry model, wherein guiding slideways are respectively arranged on the left and right steps of the pedestal; the mobile guide bar is longitudinally arranged on the pedestal; slide blocks are respectively fixed below the two ends of the mobile guide bar; the horizontal movement apparatus is arranged at the left end of the mobile guide bar; the longitudinal movement apparatus is also arranged on the mobile guide bar; a through horizontal slideway is arranged at the center line position of the mobile guide bar; the solid geometry model is arranged in the groove in the middle part of the pedestal; and the solid geometry model rotation motor is arranged at the back side of the pedestal. The combined type solid geometry teaching instrument solves the problem that the geometry teaching instrument disclosed in a Chinese Patent Document CN200997200Y cannot be used for drawing on the surface of a solid geometric figure.
Description
technical field [0001] The invention relates to the field of mathematics teaching equipment, in particular to a combined three-dimensional geometry mathematics teaching instrument. Background technique [0002] Mathematically, solid geometry is the traditional name for the geometry of three-dimensional Euclidean space. Generally as a follow-up course to plane geometry. Stereo mapping deals with the measurement of volumes of different shapes: cylinders, cones, frustums, spheres, prisms, wedges, bottle caps, etc. The Pythagoreans dealt with spheres and regular polyhedra, but pyramids, prisms, cones, and cylinders were poorly understood before Platonists tackled them. Eudoxus established their measurements, showing that a cone is one-third the volume of a column of equal base and height, and was probably the first to show that the volume of a sphere is proportional to the cube of its radius. [0003] Chinese patent document CN200997200Y discloses a geometric teaching instrum...
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IPC IPC(8): G09B23/04
CPCG09B23/04
Inventor 李艳军
Owner 山东火炬中原技术市场管理有限公司