Real phenomena. Real measurements.

How a lab works

1. Students pick experimental conditions (the buttons under the video).
2. They step through the video and measure with the ruler, timer, or point-marking tool.
3. Data goes in a table, then onto a graph with linear, proportional, and quadratic fits — plus linearizing (x², √x, 1/x, ln x).
4. They answer the questions and click Print / save report to turn in a PDF.
5. Then they move on to Practice: a concept check and calculation problems with fresh numbers.

Open the teacher guide → Standards, timing, expected results, answer keys

Good to know

• Every student device gets slightly different "measured" data, so answers can't simply be copied.
• Work saves automatically in the student's browser. Nothing is sent to a server; no accounts are needed.
• Use Video Analysis with a phone video of your own demo to make a lab from real footage.