One of the first “roller-coaster” rides in the U.S. was actually a short coal railway in Pennsylvania that hauled coal downhill between mines and used mules to bring the empty cars back up the hill.

Roller coasters are fun, fast, and are a great example of physics in action. Your challenge is to build a roller coaster out of materials you can find in your home. Cut a piece of printer or ...

In the hands of Kansas teacher Rich Maxwell, marbles make physics fun. With his help, 20 students from IDEA Homeschool built roller coasters for marbles out of paper towel rolls, painter's tape, soda ...