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One metre is about as long as a big step or a baseball bat.

One metre is about as long as a big step or a baseball bat.

A metre is a handy size for measuring. It's about how far you reach from your nose to your fingertips with your arm out to the side.

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A ruler helps us measure how long or tall something is. A ruler helps us measure how long or tall something is. We measure how tall you are in centimetres and metres. We measure how tall you are in centimetres and metres. We use a scale to measure how heavy something is. We use a scale to measure how heavy something is. Long ago, people measured things using their own feet and hands. Long ago, people measured things using their own feet and hands. The tallest tree is so big you'd need a very long tape to measure it. The tallest tree is so big you'd need a very long tape to measure it.