Engage your students in scientific argument with this interactive document. Formatted to use the Claim-Evidence-Reasoning (CER) process to allow students to explain natural phenomena in a way that is aligned with the Next Generation Science Standards (NGSS), this resource focuses on the Normalometer just at the moment from it being held to it being in freefall.The Normalometer is a compact, easy to use, science apparatus that combines hackable open resources in a unique learning tool that intera