Teacher models an inclined plane by driving a toy car up a lever board that has one end resting on several books. Scientists consider the inclined plane to be a machine even though it doesn t have moving parts, flashing lights, or require electricity. Teacher uses bar codes to show several examples of what we normally think of as a machine and compares the examples to an inclined plane. OR Use the video to introduce inclined planes with video clips demonstrating their uses. After the demonstration have the equipment managers get materials and lab sheets.
Students follow the directions based on the teacher demonstration.
While the students are working the teacher circulates through the room to facilitate the activity. Have the students reassemble for discussion purposes. Ask the students what they observed as they explored the inclined plane. Show the class the activity available on the videodisc. Have the students replicate the activity on the videodisc.