Begin the lesson by telling students what division is and how it applies to in daily life. Display a sliced pizza pie and ask how many slices four people need to eat to finish the pie. Turn the question into a division equation and show the student how to solve the problem. Stress to students that division is the exact opposite of multiplication and by division the number will either remain the same or be reduced.
Begin by teaching students the rules for dividing with a zero or one. Use two puppets made from brown paper lunch bags and markers; name one puppet Zero and another puppet One. Tell students that every time a number is divided by zero the answer is always zero because zero can't be split up because it is zero. The teacher will also use the One puppet to teach the student that any number divided by one will be the number, so if three is divided by one, the answer is one. Hand students their own One puppets and a stack of note cards numbered one to 10. Have students lift up each card with the puppet and say the equation and answer. For example if a child picks up a card with one he will say "Zero divided by one equals zero." For homework, give the student a worksheet that has zero and one division problems, and have the students complete it. The results give the teacher an idea of how well a student understood the lesson.
Introduce the lesson by giving the students the following problem to solve: There are 20 students in the class. If the class were split into groups of two how many groups would there be? Ask a student to come up to the board and write the equation. Have each of the other students write the equation and answer on individual dry erase boards. Have the students practice solving equations similar to these with different numbers of students and change the amount that will work in the groups.
Division worksheets may be boring but are needed for practice. Begin every lesson with a one-minute madness exercise where students are handed a piece of paper with equations and given one minute to solve as many as they can. In addition, give students worksheets to practice equations at home.