Jo made a cube from some smaller cubes, painted some of the faces of the large cube, and then took it apart again. 45 small cubes had no paint on them at all. How many small cubes did Jo use?
Drawing a triangle is not always as easy as you might think!
Work in groups to try to create the best approximations to these physical quantities.
Can you find a quadratic equation which passes close to these points?
Unearth the beautiful mathematics of symmetry whilst investigating the properties of crystal lattices