STEM Activities for Large Groups - If you’re an educator, a homeschooling parent, or simply want some fun activities for the family at home STEM activities for larger groups can create fun and enjoyable experiences that combine the power of science and cooperation. Whether it is a demonstration that engages with children’s minds or a team-building exercise that brings them together, STEMtropolis.com has what you need for activities, challenges, printables, and more!