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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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Watch the Clock

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?

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Take the Right Angle

How many times in twelve hours do the hands of a clock form a right angle? Use the interactivity to check your answers.

How Safe Are You?

Stage: 2 Challenge Level: Challenge Level:1
Does it matter in which direction we turn the dial?
Is it more than half a full turn each time? Can you be more exact?
Perhaps you know how many degrees there are in a circle?