These grids are filled according to some rules - can you complete
Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?
What happens to these capital letters when they are rotated through
one half turn, or flipped sideways and from top to bottom?
How would you move the bands on the pegboard to alter these shapes?
These clocks have been reflected in a mirror. What times do they
Put a number at the top of the machine and collect a number at the
bottom. What do you get? Which numbers get back to themselves?