Give your students a quick, engaging introduction to how materials react to heat and cold! In this free sample, learners compare temperatures, identify heat sources, and explore which materials keep us warm. You can find more in “Discovering Matter: Materials & Properties” and ‘Discovering matter: Properties and Changes’ units, where students dive deeper into material properties, real-life applications, and hands-on investigations. ✔️ Perfect preview of the full unit ✔️ No prep, easy to use ✔️ I