Look at the list of variables that we think might affect the voltage our little solar panels can produce.
Choose one that you think would be interesting to test. This variable becomes your Independent Variable, the one we change on purpose to see how much it changes our data.
Draw a clear diagram (labels!) that would show how you would set up the equipment to run a fair test. This diagram can serve as a materials list too, so we know what things we need to get from the store room or from home.
Also think about which variables we'd have to work to control so that they don' t change the voltage while we are testing your Independent Variable. What do we have to do the same way every time so the test is fair?
