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 ...

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 ...

Measure length using a ruler marked with halves and quarters of an inch with Ms. Askew. Join Ms. Askew for a fun Fraction Number Talk. We'll measure length using a ruler marked with halves and ...