Time

There are 104 NRICH Mathematical resources connected to Time
Making Maths: Make a Pendulum
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Making maths: make a pendulum

Galileo, a famous inventor who lived about 400 years ago, came up with an idea similar to this for making a time measuring instrument. Can you turn your pendulum into an accurate minute timer?
Time and Tide
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Time and tide

What can you say about when these pictures were taken?