Assessment for AP Calculus on Derivatives Unit. After the mid-unit quiz, students study implicit differentiation and related rates. These are included on the test in addition to the topics that were on the mid-unit quiz: definition of derivative, power, product, quotient and chain rules. Applying average rate of change to a function on an interval and also finding the instantaneous rate of change of a function at a particular value. Students knowledge of the relationship between position, v