Pupils from 2nd Grade Classroom of our school made their own physics experiments with their ..magic balloons.
The experiment in plain English:
We take an inflated balloon and rub it on a woolen piece of cloth. We observe that the balloon attracts small pieces of paper.
The explanation is simple:
Electrons are separated from the materials while rubbing and they are charged. The inflated balloon attracts the pieces of paper because powers occur between charged materials.