27 painted wooden cubes in a wooden box with a lid. The box is hinged and opens out to display the cubes. The lid is printed with the trinomial square pattern.

Materials

Trinomial: a wooden box built grouped into 27 geometric three-dimensional cubes. Cover the upper surface and side paint color and three-dimensional box corresponding color of the surface (can be used as the trinomial (a + b + c) 3 of the algebra of teaching aids.)

Imports of high-grade solid wood (beech), environmental quality paint, surface treatment.

Shrink film + white box

Purpose

1Cultivate the visual ability to distinguish the three-dimensional

2 Develop the thinking skills of mathematics.

3Indirectly prepare for the three pre-algebra teaching aids