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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 ...

Numbler hides the measuring stick at a shoe shop so that a customer's foot cannot be measured. Barky realizes that the measurement can be made by counting how many 1-centimeter items are needed, and ...

The metric system is used to measure the length, mass or capacity of an object. Length is measured in millimetres (mm), centimetres (cm), metres (m) or kilometres (km). Mass or weight is measured in ...