lesson
Faces, edges and vertices
Read with an adult. You can say, point, draw or write your answer.
1 · Learn
A solid shape is three-dimensional. A cube has six flat square faces. Where two faces meet is an edge. Where edges meet is a vertex.
A cube has 12 edges and 8 vertices. A cuboid also has six rectangular faces. A cylinder has two flat circular faces and a curved surface.
2 · Worked example
I look at a box shaped like a cuboid. I can trace a rectangle on a flat face; that is a 2-D shape on a 3-D object.
3 · Your turn
What 2-D shape is each face of a cube? Does a cylinder have square flat faces?
Check your answer
Each cube face is a square. No: a cylinder's flat faces are circles.
4 · Apply your learning
Use safe boxes and cylinders. Touch and count faces and edges together; compare with drawings.
Adult guidance and safety
Use practical objects before symbols. Read the task aloud when needed and ask the child to explain, not just name an answer. Revisit with different examples; one successful answer is not proof of fluency.
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Write, draw or show your working. Use a mouse, pen or finger. This pad is not a submitted answer.
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Typed notes are not submitted answers.
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