When you start running until you find a rock just small enough so you can lift it so you come back with the tremendous rock. You find the class cornered by the newly transformed robot. Now it looks like a giant ice sceleton about 12 feet high, probably to study human groth. The next thing you do is throw the boulder with all your strength, a direct hit the andro bot is starting to go down

Go take a nap,

or

Take the robot parts to NASA.