See table 1 for the variety and quantity of the necessary instruments in the mathematics teaching aid box for complete primary schools. Table 1

No. Equipment Name Specification Model Unit Quantity Remarks 1 meter foot M, dm, cm, Mm Four units 2 can be replaced by multifunctional teaching AIDS 2 protractor 0 ~ 180 1 3 steel tape 2m 1 4 horizontal counter for second gear demonstration 1 5 vertical counter for fifth gear demonstration/Kloc. Using 1 8 compasses made of wood or plastic instead of 9 nail plates, with a multifunctional teaching aid of 390mm×590mm, demonstrate the counting of11with an angle demonstrator of11. The clock face model of the demonstration bundle 10 12 is connected by three needles, and a cubic decimeter 1 13 unit volume demonstrator is used for demonstration. Set of four 1 14 cylindrical volume surface area demonstrator φ 100mm× 150mm sleeve 1 15 cylindrical cone volume ratio φ100 mm×150. Solid cylindrical sleeve 1 hollow cylinder, cone and sphere 17 rectangular side length and surface area demonstrator sleeve18 circular area pi demonstrator φ200mm sleeve 1 19 capacity unit demonstrator1000ml/.