Physical objects: wooden sticks, various shapes of cardboard (triangle, circle, square, pentagram, etc.). ), physical objects and graphic cards according to the size, quantity, up and down, front and back, left and right of the textbook.

Media: a set of courseware matched with the teaching materials, counting songs, making animations and mp3 nursery rhymes for the scene.

Measuring tools: a set of triangular plates, a ruler of 1m and a balance.

First-grade pupils mainly think in images, so they should have enough teaching AIDS and use them reasonably. Through the image demonstration, let the students establish the concepts of number, more or less, big or small, light or heavy, orientation and so on.