Looking for a hands-on June STEM Activity to keep your 2nd, 3rd, 4th, or 5th grade students engaged at the end of the year? This fun buoyancy STEM challenge gets students designing, building, testing, and improving a floatie that can hold a doll without sinking. Perfect for May, June, July, summer school, STEM camp, makerspace, or end of year science activities, this low-prep resource helps students explore sinking, floating, buoyancy, engineering design, and problem-solving in a memorable way