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 ...

Performing a measurement uncertainty calculation is often seen as problematic. One of the barriers to be overcome in the wider application of measurement uncertainty (MU) to reportable values is the ...

Measuring might feel like math in the classroom, but at the Tellus Science Museum, it looks a lot more like playtime. A new hands-on exhibit is helping children learn how to measure by using their own ...