NOTE: The website that is accessed as part of this resources uses Flash, which was scheduled to no longer be supported as of December 2020. The online resources are still active as of 12/30/2020 but please be aware!Use this activity, called Building Background Knowledge (BBK), to introduce students to examples and uses for both inclined planes and levers. On the two outside boxes of the graphic organizers, students write observations, commonalities, things that stick out etc. about the pictures