Gear type random student number roll calling system for English classes
A random point and gear-type technology, applied in the field of teaching aids, can solve problems such as the inability of the whole class to ask random questions, and achieve the effect of improving academic performance and ensuring attention
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[0014] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0015] See attached figure 1 , the present invention is used for the gear type random point student number system of English classroom and comprises motor 1, driving gear 6, driven gear 9, light source, glass plate 12 and plane mirror 13;
[0016] The diameter of the driving gear 6 and the driven gear 9 are different, and the driving gear 6 and the driven gear 9 mesh. Ten through holes are evenly distributed on the circumference of the driving gear 6 and the driven gear 9 respectively, and the through holes are respectively arranged There are glass plates 12, numbers 0-9 are written on the glass plates 12 in the ten through holes of the driving gear 6, and numbers are written on the glass plates 12 in the ten through holes of the driven gear 9 0-9, the two light sources correspond to any through hole on the driving gear 6 and any through hole on the dri...
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