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Which times on a digital clock have a line of symmetry? Which look the same upside-down? You might like to try this investigation and find out!

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Clock Hands

This investigation explores using different shapes as the hands of the clock. What things occur as the the hands move.

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Ten Green Bottles

Do you know the rhyme about ten green bottles hanging on a wall? If the first bottle fell at ten past five and the others fell down at 5 minute intervals, what time would the last bottle fall down?

A Child Is Full of ...

Stage: 2 Short Challenge Level: Challenge Level:1

Why do this problem?

This problem would make a good starter activity at the beginning of some work on time to allow you to assess any gaps in your class' knowledge.

Key questions

What day would her birthday have been on in 1973? How do you know?
How do leap years affect this problem?