One Big Triangle
Age 5 to 7 Challenge Level:
Make one big triangle so the numbers that touch on the small triangles add to 10.
Little Man
Age 5 to 7 Challenge Level:
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?
Overlaps
Age 5 to 7 Challenge Level:
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.
Possible Pieces
Age 5 to 11 Challenge Level:
Can you create jigsaw pieces which are based on a square shape, with at least one peg and one hole?
If the World Were a Village
Age 5 to 11 Challenge Level:
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?
Bundles of Cubes
Age 7 to 11 Challenge Level:
Watch this animation. What do you notice? What happens when you try more or fewer cubes in a bundle?
Circular Area
Age 7 to 11 Challenge Level:
How could you find out the area of a circle? Take a look at these ways.
Triangle Transformation
Age 7 to 14 Challenge Level:
Start with a triangle. Can you cut it up to make a rectangle?
Stage 1 and 2 Toughnuts
Age 5 to 11
These Stage 1 and 2 problems haven't been solved yet. Why not take a look?
NRICH is part of the family of activities in the Millennium Mathematics Project.