This project includes 6 different real-life exponential situations that are either percent increase/decrease or compound interest. Students can work in groups, or your could assign multiple students the same project.

Students are asked to do the following:

1) Write an un-simplified equation to model the situation. (We still want to see (1+r) or all the parts of the compound interest equation)

2) Explain in detail each part of the equation.

3) Write an equation in simplest form to model the situation.

4) Answer two questions about the situation using the equation. Some require students to look at a table in a graphing calculator (or create a table) to determine the number of years it took for something to happen.

Students presented their projects to the class to learn/review the types of situations and equations.

Student samples in the thumbnails!