For each unit I provide students with a learning objective chart. It lists, in question for, all of the main objectives for the unit. Whenever there is time at the end of class as a closure activity the students will answer the objective question to the best of their ability. Then I will go around and rate their answer so students know whether or not they need to come see me for extra help. In addition, if everyone is having trouble with a particular objective then I know I need to go back and reteach that material.