- Denny Creek (wta.org)
This is a popular trail, thanks to its gentle, family friendly grade with amazing destinations. The natural water slide area at Denny Creek is a must visit for families! Keekwulee Falls offers a stunning viewpoint that is easily accessible. Snowshoe Falls maybe a bit elusive and more difficult to see from the trail, but is also a beautiful natural wonder.
- Calculus (Wikipedia)
Calculus is the mathematical study of continuous change, in the same way that geometry is the study of shape, and algebra is the study of generalizations of arithmetic operations.