Resource 2: A mathematical dictionary
Teacher resource for planning or adapting to use with pupils
There are many on the market. A good one is published by Oxford University Press.
Here are a few words for geometry:
Curved surface
Edge
Surface
Flat surface
Vertex
Pupils could fill in their own definitions for each word and check these with their classmates or you if they are not sure their definitions are correct.
Resource 1: Using feely bags