PreRISE：Three-Dimensional Shapes
Three-Dimensional Shapes
Today we learned about some three-dimensional shapes.
Q: What’s this shape?
A: It’s a cuboid.
Q: How many faces does the cuboid have?
A: The cuboid has six faces.
Q: What's the shape of each face?
A: They are all rectangles.
Q: How can we call this shape?
A: We call it the net of a cuboid.
Q: What’s this shape?
A: It’s a cube.
Q: What’s this?
A: This is the net of a cube.
Q: How many faces does the cube have?
A: The cube has six faces.
Q: What's the shape of each face?
A: They are all squares.
Q: What’s this shape?
A: It’s a pyramid.
Q: What’s this?
A: This is the net of a pyramid.
Q: How many faces does the pyramid have?
A: The pyramid has five faces.
Q: What's the shape of each face?
A: They are one square and four triangles.
Q: What’s this shape?
A: It’s a cylinder.
Q: What’s this?
A: This is the net of a cylinder.
Q: How many faces does the cylinder have?
A: The cylinder has three faces.
Q: What's the shape of each face?
A: They are one rectangle and two circles.
A. Math--Three-Dimensional Shapes
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；
3.结合课件，引导孩子学习2D shapes（二维图形）和3D shapes（三维图形）之间的联系，并能够将两者进行匹配；
cuboid，cube，pyramid，cylinder，side，face，net
本课作业
【语音作业】：以Freda的语音为辅助，尝试自己读复习文档中的句子，并解决其中的数学问题。
【笔头作业】：根据下发的平面图（每人一张），制作3D图形，并进行介绍。
例：Good evening, everyone. My name is ... . I’m ... years old. I want to introduce my shape for you. This is a pyramid/ cube/ cuboid. It has ... faces. Thank you.