This Smart Notebook file is great as a math warm up or for a revision lesson on the properties of 3D shapes. It also involves thinking skills and problem solving!
How to use:
Children pick a colour which reveals a property of the hidden shape (e.g. it has 5 vertices). Using a processes of elimination and by revealing further properties, children then need to work out what the shape could or couldn't be. Reveal the shape at the end by moving the blue thought bubble. The shapes included are a cuboid, triangular prism, cylinder and tetrahedron.