STEM Middle School Classroom ProjectUsing an old CD, a balloon and a water bottle (with a pop-up top), students will create their own mini-hovercraft and explore the near-frictionless properties with their group.This STEM Activity Challenge includes teacher instructions, student instructions (worksheet), grading rubrics, a demonstration video for the teacher, a materials needed sheet, and the related NGSS standards!In the teacher demonstration video, I give you an overview of the activity challe