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Days and Dates

Investigate how you can work out what day of the week your birthday will be on next year, and the year after...

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Plum Tree

Label this plum tree graph to make it totally magic!

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Magic W

Find all the ways of placing the numbers 1 to 9 on a W shape, with 3 numbers on each leg, so that each set of 3 numbers has the same total.

Balance Point

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Students need to be familiar with the principle of moments.
The problem called "Inside Outside" will help with this.

This problem requires careful systematic working and the utilisation of symmetry to reduce the arrangements to be tested to a manageable number (12).