How to make a strong mouthpiece?

Описание к видео How to make a strong mouthpiece?

In this video, we make a strong mouthpiece that produces a loud sound. To make it, we use polyethylene pipe, rubber and glue, old farmers used this device to make birds escape from their fields. It is easy and informative for elementary school students to make.

Комментарии

Информация по комментариям в разработке

Похожие видео