Classroom mode
Run it in class
If you dissolve a whole sugar cube in water, what will a balance do while the cube disappears from sight?
Show of hands — before you project anything
Why record the beam before stirring instead of relying on memory?
- 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
- Why record the beam before stirring instead of relying on memory?
- Which variable changes in the hidden experiment, and which conditions stay matched?
- After watching, explain how the molecular picture accounts for both the clear-looking cup and the measured result.
Where it shows up in real life
- Stirring sugar into a breakfast drink until no cube is visible
- Salt mixing into pasta water
- Crystals appearing after a drop of salty water dries
A prediction-first worksheet — no answer key.
zero prep · no login · any projector
Winding down at home? Family mode ·
Explore every question
If you dissolve a whole sugar cube in water, what will a balance do while the cube disappears from sight?
Predict — what do you think will happen, and why?
Talk about it
- Why record the beam before stirring instead of relying on memory?
- Which variable changes in the hidden experiment, and which conditions stay matched?
- After watching, explain how the molecular picture accounts for both the clear-looking cup and the measured result.