Classroom mode
Run it in class
Why can a tiny kid lift a giant grown-up on a seesaw?
Show of hands — before you project anything
Predict before testing: with the pivot in the middle, who sinks — the heavy rider or the light one? Then explain why distance changes the answer.
- A Way more than you'd guess
- B About what you'd guess
- C Way less than you'd guess
Count the votes out loud. Hold them to it — then watch.
Project it (fullscreen)
Discussion prompts
- Predict before testing: with the pivot in the middle, who sinks — the heavy rider or the light one? Then explain why distance changes the answer.
- Two things change at once when you slide the pivot toward the heavy rider. Name both, and predict how each one helps the lighter rider.
- The kid lifts the giant but moves a long way to do it. Predict whether the work (force times distance) is really the same on both sides, then check.
Where it shows up in real life
- A playground seesaw with a heavier friend or sibling
- A door that swings easily when you push at the handle but barely budges near the hinges
- A crowbar or wheelbarrow that turns a small push into a big lift
A prediction-first worksheet — no answer key.
zero prep · no login · any projector
Winding down at home? Family mode ·
Explore every question
Why can a tiny kid lift a giant grown-up on a seesaw?
Predict — what do you think will happen, and why?
Talk about it
- Predict before testing: with the pivot in the middle, who sinks — the heavy rider or the light one? Then explain why distance changes the answer.
- Two things change at once when you slide the pivot toward the heavy rider. Name both, and predict how each one helps the lighter rider.
- The kid lifts the giant but moves a long way to do it. Predict whether the work (force times distance) is really the same on both sides, then check.