Periods 1-2 and 8-9, check out how to begin circuit analysis. In the Ohm's law lab, from data I've seen in some groups, you should see current, I, is linearly related to voltage. And also, current is related to resistance^(-1), or I proportional to 1/R. Combined we'll get an empirical formula of I = V/R. This is Ohm's law. We already know the rules for series and parallel resistance.
Periods 3-4, check out why momentum is conserved, and then an example of perfectly inelastic collisions with a ballistic pendulum.
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