Measuring Up!

February 9, 2018
A girl measures her height on a chalkboard. She is about four feet tall.
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We can learn about the world around us by taking measurements. Different tools help us make different kinds of measurements. Here are a few tools for measuring.

Thermometer

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A thermometer measures temperature. It tells us how hot or cold something is.

Scale

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A scale measures weight. It tells us how much something weighs. Which of these two loads is heavier?

Ruler

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A ruler measures length. It tells us how long or short something is. How many inches long is this eraser?

Clock

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A clock measures time in hours and minutes. The round clock is analog. It has hands that move. They point at the numbers to show the time. The black clock is digital. It has only numbers.

Did You Know?

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This is a sundial. It is one of the oldest tools for telling time. A sundial has markings. They stand for the hours of daylight. It also has a pointer. The pointer casts a shadow. The shadow moves as the sun moves. This is one way people could tell time long ago.