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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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On Time

On a clock the three hands - the second, minute and hour hands - are on the same axis. How often in a 24 hour day will the second hand be parallel to either of the two other hands?

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Right Time

At the time of writing the hour and minute hands of my clock are at right angles. How long will it be before they are at right angles again?

Estimating Angles

Age 7 to 14 Challenge Level:

Use the GeoGebra applet below to explore angles.

Tick and untick the box to show/hide the angle and challenge yourself to make different angles.