Students work through the Sharing Cookies lesson that is described in the First Four Standards of this Framework . They investigate division by using 8 cookies to be shared equally among 5 people, and discuss the problem of simplifying the number sentence which describes the amount of each person's share. From the beginning of their work with division, children are asked to make sense out of remainders in problem situations. Students explore division by reading The Doorbell Rang by Pat Hutchins. In this story, Victoria and Sam must share 12 cookies with increasing numbers of friends.
Students can use counters to show how many cookies each person gets.
Students use streets and alleys as both a mental model of multiplication and a useful way to recover facts when needed. Students use a double maker on a calculator for practice with doubles. Any number pressed then, followed by the equal sign, will show the number's double. Students work together to try to say the double for each number before the calculator shows it. They also recover facts by knowledge of the role of zero and one in multiplication, of commutativity, and of the regular patterned behavior of multiples of nines.