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 ...

You’ve no doubt heard the carpentry proverb “Measure twice, cut once” and may even have made it a mantra for your own projects. But unless you know how to use a tape measure and correctly read its ...

Ever needed to get the dimensions of something but don’t have a tape measure to hand? There is an iPhone app uses augmented reality to get the measurements of any object you choose, here’s how. The ...