Solids
The envelope of a triangular pyramid
- Lesson Aims
Investigate pyramids
- Description of a pyramid, number of faces,edges and vertices.
- Recognition of a triangular pyramid and envelope of a pyramid.
- Pyramids with different bases.
- Model Name
Envelope of a triangular pyramid.
- Lesson structure
First lesson on the topic of 3-D solids.
- Lesson content
Pupils will construct a triangular pyramid, investigate the properties of this pyramid, the envelope of this pyramid constructed from triangles and comparison of the envelope and the solid.
- Prior knowledge
Polygons and triangles.
Themes: Solids
The envelope of a triangular pyramid
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