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Homes

There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?

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Number Squares

Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

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I'm Eight

Find a great variety of ways of asking questions which make 8.

One Big Triangle

Stage: 1 Challenge Level: Challenge Level:1
You could try putting one piece in to start with and then seeing whether you can place another piece next to it.
Are you sure that triangle is the only possibility?