During Science class today, we did an experiment on the oscillation of the pendulum bob.

What I've learnt today through this experiment:

The dependent variable will always be the time for one full swing, or the period.The three tested independent variables will be the mass, the angle, and the length of string.The controlled variables will be the attachment point of the string, the string itself, the method used to time the pendulum, and the variales we are not currently testing. These will remain the same for each test, so that we know they won't affect the results.