PBS
Pbs Mathline: Stressed to the Breaking Point Lesson Plan [Pdf]
Students explore how much weight a spaghetti bridge can support and whether width and length matter. Printable lesson.
Other
Hsor.org: Frankfurter High: Hot Dog Sales
Determine the number of hot dogs needed in order to make a profit with little waste. Adobe required.
Other
Hsor.org: High Step Shoes: Product Mix
Determine the profits and the efficiency of the shoe company.