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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!

Clock Hands

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

A Child Is Full of ...

My cousin was 24 years old on Friday April 5th in 1974. On what day of the week was she born?

Ten Green Bottles

Age 7 to 11
Challenge Level

Ten green bottles hanging on a wall
Ten green bottles hanging on a wall
If one green bottle should accidentally fall
There'd be nine green bottles hanging on the wall
Nine green bottles .....
If the first bottle fell at ten past five in the morning ($5.10$ a.m.) and the others fell down at $5$ minute intervals, what would the time be when the last bottle fell down?