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 ...

Measuring might feel like math in the classroom, but at the Tellus Science Museum, it looks a lot more like playtime.

How many inches are in a foot? Pick inches or feet to measure the length of objects. Warm up with a Mystery Math Mistake to add 2 two-digit numbers. Explore how many inches there are in a foot.

You’re moving, or maybe you’ve just got a lot of stuff, and you need to rent out a storage container—but you have no real sense for how much storage you need. Keep reading, because understanding the ...