Paper Popper STEM activity for elementary and middle school! Learn about how the science of paper poppers or paper bangers can be used in the classroom with this engaging, NGSS standards-based STEM Challenge. Students will learn the STEM concept of design thinking, properties of sound and the scientific method. Plus download a free guide to create your own paper popper to try folding and creating your own! Great for science classrooms, hands on experiments and even science fair projects.