### Planning and Activities

**Day 1**

Explain that a tangram is an ancient Chinese puzzle made from seven 2-D shapes. Give each pair of children a set, ask them to cut them up and then mix them up.

1. Try to rearrange them as a square…

2. Recreate a displayed outline picture of a dog.**Group Activities:**

Y1/Y2 -- Whole class activity: Children use tangram pieces to recreate pictures.

**Day 2**Show a selection of 3-D shapes, discuss shapes of faces, and count the number of edges. Show a film clip of cubes and cuboids in a kitchen.

**Group Activities: T with Y1 or Y2**

Y1 /Y2 -- ‘Shape competition’ – which shape has the most faces and which has the most vertices? (Y2: and edges).

**Day 3**Show a film clip to introduce the concept of nets. Show three nets, discussing which could make a cube. Show a tetrahedron made from a net; name and count its faces.

**Group Activities: T with Y1 or Y2**

Y1 /Y2 -- Investigate which nets will fold to make a complete cube and a tetrahedron.