Sort the houses in my street into different groups. Can you do it in any other ways?
Use cubes to continue making the numbers from 7 to 20. Are they sticks, rectangles or squares?
How can you arrange these 10 matches in four piles so that when you move one match from three of the piles into the fourth, you end up with the same arrangement?
Using different numbers of sticks, how many different triangles are you able to make? Can you make any rules about the numbers of sticks that make the most triangles?
This problem challenges you to work out what fraction of the whole area of these pictures is taken up by various shapes.