## Riemann Sums

We show, step-by-step, how to approximate the area under a function using Riemann Sums.

## Leaves of polar curves

For a given polar curve, we show, step-by-step, how to find the slope of an arbitrary line and how to find the area of each leaf of the curve.

## How long is that mountain path?

We show how to determine the length of a mountain path.