Make one big triangle so the numbers that touch on the small triangles add to 10.
What does the overlap of these two shapes look like? Try picturing it in your head and then use the interactivity to test your prediction.
The Man is much smaller than us. Can you use the picture of him next to a mug to estimate his height and how much tea he drinks?
This activity is based on data in the book 'If the World Were a Village'. How will you represent your chosen data for maximum effect?
Can you create jigsaw pieces which are based on a square shape, with at least one peg and one hole?
Watch this animation. What do you notice? What happens when you try more or fewer cubes in a bundle?
Start with a triangle. Can you cut it up to make a rectangle?
These Stage 1 and 2 problems haven't been solved yet. Why not take a look?