As the user enters ordered pairs, the spreadsheet graphs a scatterplot, creates a line of best fit, and displays its equation (in linear or polynomial form).

Students learn about slope by experimenting with different values for "m" in the slope-intercept equation, then looking for patterns, relationships, and generalizations.

The user inputs a mathematical expression, and then alters it with parentheses to see how many different answers can be generated. Great for order of operations.

As students report measurements on circumference and diameter of objects, the spreadsheet calculates their ratio and averages them together to approximate pi.