Students will learn or review finding the area of a circle. Students will understand why data tables are useful in organizing data. Students will learn to build and use a spreadsheet. Record the hypotheses. Remind students that this isn't a taste contest.
Pizzas come in different sizes.
We can t use the word labels because they represent different sizes. Discuss holding variables constant. Try to get the prices of a one topping regular crust and regular price. If there is a deal, note it on the data table. Discuss and derive formulas for area of circle.