๐ Challenge your students with 90 digital STEM engineering design challenges using 10 FREE, browser-based virtual manipulative tools โ no accounts, no downloads, no subscriptions required! This Google Slidesโข-compatible resource uses GeoGebra, PhET Interactive Simulations, and Mathigon Polypad โ the same tools used in real STEM and engineering classrooms โ to give students hands-on, technology-integrated learning experiences on any device. ๐ฆ What's Included: ๐ 90 STEM Engineering Design C