Discover the mechanical marvels hidden in plain sight with The Case of the Hidden Helpers, an interactive mystery-themed STEM investigation where students uncover simple machines embedded in everyday school supplies! Created by Black-Eyed Susan Science, this inquiry-based activity blends critical thinking, hands-on learning, and physical science into an unforgettable classroom experience. Perfect For: Grades 4–8 Physical Science, STEM, or Engineering Units Interactive Notebooks & Stations Back