Time and Measurement - May 2008, Stage 3&4

Problems

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Thousands and Millions

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Here's a chance to work with large numbers...

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All in a Jumble

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.

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Zin Obelisk

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

In the ancient city of Atlantis a solid rectangular object called a Zin was built in honour of the goddess Tina. Your task is to determine on which day of the week the obelisk was completed.

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Round and Round a Circle

Stage: 4 Challenge Level: Challenge Level:1

Can you explain what is happening and account for the values being displayed?

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An Average Average Speed

Stage: 4 Challenge Level: Challenge Level:1

My average speed for a journey was 50 mph, my return average speed of 70 mph. Why wasn't my average speed for the round trip 60mph ?

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Trigonometric Protractor

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

An environment that simulates a protractor carrying a right- angled triangle of unit hypotenuse.

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Jumping Gerbils

Stage: 4 Challenge Level: Challenge Level:2 Challenge Level:2

A conveyor belt, with tins placed at regular intervals, is moving at a steady rate towards a labelling machine. A gerbil starts from the beginning of the belt and jumps from tin to tin.

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Swimmers

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Swimmers in opposite directions cross at 20m and at 30m from each end of a swimming pool. How long is the pool ?