Mathematical teaching aid

The utility model relates to a mathematical teaching aid. Including supporting seat, three thin graduated flask and a bracing piece, the top of locating the supporting seat is erect to the bracing piece, and the bracing piece top is equipped with a horizontally horizontal pole, is equipped with three blind hole on the horizontal pole, in above -mentioned three thin graduated flask inserts the three blind hole on the horizontal pole respectively, upper end of the support bar is equipped with a flat board, it is the circular shape holding tank to be equipped with the cross section on the flat board, the cross section is the oval -shaped holding tank, the cross section is the holding tank of square, the cross section is rectangular holding tank, the cross section is triangle -shaped's holding tank and the holding tank of cross section for the rhombus, and the bottom of above -mentioned a plurality of holding tanks all is equipped with the through -hole and is used for plugging up the rubber body of through -hole