STEM Project for Middle School—6th, 7th, and 8th grades.Working in groups students will design and build towers, ramps, and loops. They will then start marbles on the top and watch them roll, spin and drop to the bottom. Their goal will be to create a track that (safely) transports the ball to the bottom—in the most creative and unique way possible.This STEM Activity Challenge includes teacher instructions, student instructions (worksheet), grading rubrics, a demonstration video for the teacher,