UM L7 Video Clip 1: Class discusses CQ 7-2

UM L7 Video Clip 1: Class discusses CQ 7-2

Two students in class support choice B for CQ 7-2.

UM L7 Video Clip 2: Class discusses number of types of charge

UM L7 Video Clip 2: Class discusses number of types of charge

Four students in the class answer the making sense question below Table II: how many different types of charge there are and how the different types interact with each other.

UM L7 Video Clip 3: Group discusses SQ #2

UM L7 Video Clip 3: Group discusses SQ #2

The group discusses CQ 7-5: What happens when two objects are charged by rubbing or peeling? In the version of the materials this group had there were actually four choices. Choice C on the current version was choice D on the previous version. [Choice C on the previous version was: "Both objects have both types of charge but each type is in a different location on the object.' That choice doesn't appear on the current version.] Different students in the group support either choice B (one object has only one type of charge and the other object has only the other type of charge) or choice D (which is now choice C). Also, these students had seen a movie where an acrylic sheet and a Styrofoam plate were charged oppositely by rubbing them together.