Young economists explore opportunity cost by counting how much money Susan has in her piggy bank. From here, they are challenged to help Susan make a choice about what she can buy with her money. 

In this social studies worksheet, students discover how to be an informed consumer by first reading 10 questions pertaining to marketing, advertising and purchasing choices. Students use Internet searches to find the answers. There are...

Here is a well-designed resource that provides five yes-or-no questions which model different situations with linear functions. It makes a good pre-test for the beginning of the unit. The purpose is to elicit common misconceptions of...