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Times

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?

Timing

Stage: 2 Short Challenge Level: Challenge Level:2 Challenge Level:2

Why do this problem?

These two short problems require children to apply their knowledge of time and each would make a good lesson starter or plenary.

Key questions

What could you jot down or draw to help you?
What will Tom's watch say when the time is 7.57?
What will John's watch say when the time is 7.57?

Possible extension

Wonky Watches would make a good follow-up problem to these short challenges.

Possible support

Having a clock to refer to, or some pictures of a clock face, will help children work on the first problem. A calendar might be useful for the second challenge.