Students study how the nature of two materials in contact, and the smoothness of their surfaces affect the magnitude of the sliding force of friction. They use a force sensor to measure frictional force for different surfaces.

Does your hair go crazy when the weather turns damp? Did you know that strands of hair can relax and lengthen when the humidity increases and then contract again when the humidity decreases? In fact, hair strands can be used as the basis...

Over a period of two weeks students will use their class-made instruments to measure and record weather data. Students will also compare their data to online weather data. The final activity involves analyzing the collected data to look...