Why does a cylinder
become a rectangle?
Unroll the side. Change the radius. Discover where 2πrh comes from.
Explore the activityA little curiosity goes a long way
Make the
idea click.
Turn an abstract idea into something you can move, test and explain. Maths and physics, made visible.
Free activities · Phone, tablet or classroom screen
LIVE IN 3D01 / GEOMETRY
↔ Drag to rotate
RolledFlat
BIG “OH, I GET IT.”
Change one thing.
Notice what happens.
Make a prediction.
Put it to the test.
Find the pattern.
Explain it in your words.
THREE WAYS IN
Start with a question.
Short, guided activities for an individual explorer
or a whole class. Suggested ages 11–16.
Why does a cylinder
One bulb out.
What happens next?
Build a prediction, then compare series and parallel circuits.
Explore the activityWhere does the
energy go?
Release a ball. Follow potential and kinetic energy, then add friction.
Explore the activityMore curious? Explore waves, planetary orbits (Chinese), or the full Chinese experiment collection.
EARLY CLASSROOM PREVIEWA STARTING POINT FOR YOUR NEXT LESSON
Less explaining.
More discovering.
A visual experiment is the beginning of the conversation. Each activity gives you a question, a simple investigation, and a way to check understanding.
Open & print the teacher packChoose an activity, then print a student worksheet or teacher notes.
- 01
Predict before you press play.
A focused opening question gives every student a way in.
- 02
Change it. Watch it. Compare.
Students test one variable at a time and record what they notice.
- 03
Explain the “why”.
A short exit question turns a visual moment into an idea they can use.