In this lesson, we will make a fluttering butterfly. The craft is based on a telescopic linkage mechanism made of two tubes: one acts as a guide, while the other serves as a moving rod that transfers motion to the wings.
In this video, we will learn how to make this puppy with a swinging head.This craft is based on the principle of a lever, which we can observe in real life, for example,in the control mechanism of an excavator’s boom and bucket.
Қазақ тілі 
Русский 