Predict · change · observe · explain
Virtual science experiments
Investigate one variable at a time in safe, repeatable simulations. Record several trials and look for evidence of a pattern.
5 guided simulations
Physics experiment
Pendulum timing lab
Change the length, then measure the modelled time for one complete swing.
Investigation questionHow does string length change a pendulum's period?
Make a prediction
What do you think will happen with these settings? Explain why.
Your investigation is saved as you work.Change the variables
Change one variable between trials when you want a fair comparison.
String length
60 cm
Kept the same10° release angle · same mass
Run and observe
The model uses the settings shown above. Add several trials to compare results.
60 cm
Safety and model note: If trying this physically, use a soft weight and keep faces clear of the swing. Virtual results simplify real systems, so physical observations may vary.