PBS
Pbs Learning Media: Taco Cart: A Pythagorean Journey
This interactive exercise uses distance and speed of travel to solve a real-life problem focusing on the Pythagorean theorem and rate of change.
Science Education Resource Center at Carleton College
Serc: Measuring the Speed of Go Carts
Students will make go-carts and measure the velocity, then change one variable and see how the velocity changes. They will learn about the equation speed = distance divided by time and practice using it.
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.