Experience Mike Soltys, University of Colorado shared an experience on "Balloons" Added Tuesday, April 11, 2017 at 4:06 PM Good activity with some challenging math for Taught this a couple times with Highschool Freshmen.Students really need some help with the buoyancy calculations, but I love the math that this engineering activity includes. The large, light trash-bags work really well. You can melt trash-bags together using a glue gun, which allows you to make ... Read More 0 Comments