Uploaded January 2013 | Updated September 2026, 2 weeks ago
The sky's the limit for these disks, which have two layers of bonded metals with different thermal expansion properties. A change in temperature causes these disks to jump into the air! Simply warm the disk with your hands, snap it, place it on a table, and watch it fly! Available from Educational Innovations, Inc. at teachersource.com/product/bimetallic-jumping-disc/energy
The sky's the limit for these disks, which have two layers of bonded metals with different thermal expansion properties. A change in temperature causes these disks to jump into the air! Simply warm the disk with your hands, snap it, place it on a table, and watch it fly! Available from Educational Innovations, Inc. at teachersource.com/product/bimetallic-jumping-disc/energy
