Have the students work with partners to solve this problem. Encourage students to estimate the answer before they find the exact cost. They may use calculators to do the computations. Divide the class into small groups. Have the groups go to stations set up in the classroom with two different cereals at each station.
Students can use calculators, mental math, or paper and pencil to solve the problem.
Have students place their boxes of cereal on the chalk ledge from least to greatest in cost per ounce. The Activity Sheets should be placed on the board over the corresponding box of ceral. Have students compare the prices and determine the least and most expensive cereals. Ask students to think of possible reasons why one type of cereal might cost more than another. Informally survey the class to find out which students like to eat snack foods.