This lesson is an introduction to mass, volume, density and how to use common tools to measure them, and is part of a five-lesson series on Structure and Properties of Matter (click for bundle). This lesson supports MS-PS1 (Structure and Properties of Matter) of the NGSS. The handout and included answer key work together with videos and links found at Measuring Matter on the How About Science? website. Here are some things you will like about “How About Science?” activities!∙ NO PREP (othe