Understand the four types of homework. Know when and why to have students practice: Memorization of basic rules, algorithms, or laws so the skill becomes rote. Increase in skill speed, used for improving students' abilities to apply these skills in more complex problem solving. Deepening understanding of a concept—providing students time to read further, elaborating on a new idea and expanding their understanding. Preparation for the following day's learning, such as an advance organizer or cue to increase readiness for new information.