Finding the graph of a hanging chain without knowing about cosh and sinh: The Catenary and Hyperbolic Functions (pdf of 2/26/2010)
An Ellipse, a Carpenter's Square and a Circle (pdf of 3/06/2010)
A pretty tall tale: The Inkeeper's Problem (pdf of 4/11/2010)
Without a tale and absent other notable features: The Inkeeper's Problem (Slide show for LACC High School Math Contest) (pdf of 3/20/2010)
(Last modified 4/11/10)