Today is Tuesday, January 14th, 2020.

It's ______ with _____ rain and _____ winds.

3D shapes

What are they? They are candles.

What shape is the candle? It’s a cuboid.

This is the net of a cuboid.

Q: How many faces does a cuboid have?

A: A cuboid has six faces.

Q: What's the shape of each face?

A: They are all rectangles.

What’s this shape? It’s a cube.

This is the net of a cube.

Q: How many faces does a cube have?

A: A cube has 6 faces.

Q: What's the shape of each face?

A: They are all squares.

What’s this shape? It’s a pyramid.

This is the net of a pyramid.

Q: How many faces does a pyramid have?

A: A pyramid has 5 faces.

Q: What's the shape of each face?

A: There is one square and four triangles.

What’s this shape? It’s a cylinder.

This is the net of a cylinder.

Q: How many faces does a cylinder have?

A: A cylinder has 3 faces.

Q: What's the shape of each face?

A: There is one rectangle and 2 circles.

本课教学目标：

1.通过瑞思博士带我们去学习立体图形的三维（3D）展开图（net，2D图）

2.让孩子们从不同的面（face）去了解一个立体图形，能够根据不同的图形所构成不同的面来认识一个三维立体图

课后：

 根据语音进行复习。