Create your own centimeter ruler. Then, estimate and measure with lengths with it. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through ...

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How accurate you need to be when you measure depends on the situation. To measure and draw well, you need to know how to use a ruler and understand the different units of measurement, such as ...

Our world is ordered with rigid measurements - but alongside them are much more human ways to scale such things as the ferocity of storms and the strength of chilis. How much spicier is a Scotch ...

Our world is ordered with rigid measurements - but alongside them are much more human ways to scale such things as the ferocity of storms and the strength of chilis. Scales help us measure the ...