Levers & Pulleys
Investigation 1
Part 3
Lever Experiment B
Students conduct another lever experiment, this time applying the effort in the same position every time to discover what happens to the amount of effort needed as the load moves to different positions on the lever arm.
3. Lesson set up and Management
1. Systems
- 1.2 Structure of Systems
- 1.2.1 Systems Approach
Describe how the parts of a system interact and influence each other.
(ST01, STI02, STI03, & STI04) - 1.3 Changes in Systems
- 1.3.1 Nature of Forces
Know the factors that determine the strength and interactions of the various forces.
(CH01 1.3.1)
2. Inquiry
- 2.1 Investigating Systems
- 2.1.1 Questioning
Generate questions that can be answered through scientific investigations.
(IN01 2.1.1) - 2.1.4 Modeling
Correlate models of the behavior of objects, events, or processes to the behavior of the actual things under investigation; test models by predicting and observing actual behaviors or processes.
(IN04 2.1.4)
When effort is applied at a predetermined position, the closer the load is to the fulcrum, the easier the load is to lift.
3. Lesson set up and Management
Materials:
No extra materials are needed for this investigation.
Student Management:
Discuss appropriate usage of science materials. Students should only have the materials necessary for this lesson. All materials should be returned in the condition in which they were distributed and should only be used in the manner for which they were intended.
Look at the math extension in the FOSS manual.
Make overhead transparencies of all Student Work Sheets to aid in review and discussion.
Read Teacher and Student background sections before doing the investigations.
Writing Support:
Have each student keep a Science Journal.
Reading Support:
Wheel and Axle? (see Science Stories folio in teacher manual)