problem
Favourite
What was in the Box?
Age
5 to 7
Challenge level
This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?
problem
Favourite
Break it up!
Age
5 to 11
Challenge level
In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?
problem
Favourite
Holes
Age
5 to 11
Challenge level
I've made some cubes and some cubes with holes in. This challenge invites you to explore the difference in the number of small cubes I've used. Can you see any patterns?
problem
Favourite
Four Triangles Puzzle
Age
5 to 11
Challenge level
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
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Puzzling with Paper
This feature challenges you to create different shapes by folding A-sized paper. Grab some paper and get folding!
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Mathematical Habits of Mind
These activities will help you to be curious, thoughtful, collaborative and determined.