The ingenious use of balloons. Use your imagination and talk about the clever use of balloons.

As we all know, balloons are widely used in daily life. In major festivals and large-scale activities, people will decorate the environment with balloons to increase the festive atmosphere. In fact, balloons are often used in junior high school physics experiments, which has achieved good educational and teaching results.

1. When exploring the generation of sound, the teaching materials include paper, rubber band, pen cap, water, etc. In fact, we can also use balloons, because there are many ways for balloons to sound, which are familiar to students, such as rubbing their hands on the surface of balloons; Break a balloon full of gas; Punch holes on the balloon surface with a needle; Changing the size of the balloon mouth quickly can also make the balloon sound.