Numerous short interactions are more effective than fewer prolonged sessions. When teachers begin a new topic, the recommendation is to find the level at which the majority of the students succeed, then begin work at a level slightly above it. The starting level may change from class to class and year to year, because the mathematical knowledge that students bring with them will vary. Where appropriate, exercises are provided that deal with the subskills for a given topic. Give each exercise orally.
Students try to work mentally.
Students write their answers on their slates and keep them covered. This allows you to make a quick assessment of the class's success. Adjust the level of difficulty according to the success of the class. Ask students to share their strategies for the more difficult problems and to explain their answers. Math Boxes Math Boxes, which were suggested by Ellen Dairyko, are a marvelous way to review material on a regular basis.