You position paper cut-outs, move them around and change them, and photograph everything frame by frame. You film your hand while you are drawing something. This is how exciting films are created.
Successful informative, educational videos use drawing and placement techniques to illustrate content better. The video series ‘in Plain English’ popularised the method by Common Craft, which explains the functionality of various social media applications. The authors wrote a workshop report sharing their experiences when creating and using the placement technique in their learning videos, but they also provide recommendations for imitators.
Advantages of the placement technique are limitless fantasy and creativity, in order to illustrate complex topics playfully. Having a person in the frame can distract from the content, while the placement technique tends to ‘keep it in view’ all the time. Technical expenses remain manageable and no professional equipment is needed. The result is not comparable to commercially produced videos, but learning videos do not aim for such perfection anyway.
https://www.zfhe.at/index.php/zfhe/article/view/669/588
Document ‘Legetechnik’: here