CIS Secondary | STEAM: The Science Behind Motion Pictures

Written by Peggy Fok, Secondary STEAM Teacher

In a recent STEAM module, Grades 6–8 students explored the roots of animation through a hands-on engineering project. 

Their task was to build a functioning zoetrope – an early animation device made of a spinning cylinder with narrow slits. When a series of drawings is placed inside and the cylinder rotates, the eye blends the images into motion. Long before film studios or computer graphics existed, this simple machine introduced the world to moving pictures.

Students began by constructing the device from a set of wooden pieces, circular discs and a small electric motor. They wired a basic electrical circuit, connected the power source and tested how switching the circuit on or off affected the rotation.

 As they made adjustments, students discovered that smooth, steady motion relies on stable support, good alignment and the right amount of power reaching the motor. These small engineering challenges became opportunities for problem-solving, where groups had to test ideas, refine their setup and work together.

Once their zoetropes spun cleanly, students shifted to the scientific side of the project. They learned that the illusion works because of persistence of vision, a natural effect where the eye holds an image for a split second after it disappears. 

When many still images pass quickly in sequence, the brain blends them into movement. This concept made immediate sense the moment students placed their own drawings inside the device and watched their characters spring to life.

To strengthen communication skills, each group also delivered a short presentation. They explained how electrical power drove the motion, how the fixed structure supported the moving parts and how their animation strip required careful planning and timing. 

The photos show students pointing to diagrams and models as they walked their classmates through the science and engineering behind their devices.

The module ended with an Animation Festival where students tested every group’s zoetrope and voted based on continuity, creativity and story.

This project blended creativity with real scientific and engineering thinking. Students built a system, understood the principles behind it and used it to tell a story — a full STEAM experience from design to explanation.