Levers & Pulleys
Investigation 2
Part 2
Lever Diagrams
Students investigate common tools to determine that those tools are applications of the three classes of levers.
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)
• Conventions acknowledged by a group of people help those people to communicate better and more efficiently.
• Advantage is a gain in effort, distance, or change of direction resulting from the use of a simple machine.
3. Lesson set up and Management
Materials:
Student Management:
Have one set-up of materials for each pair of students. Do not tape the dowel to the desk. Use large heavy books instead.
If you have not read the science stories by this point, you may wish to do so now.
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:
• Make up riddles.
• List everyday levers.
• Diagram make-believe levers.
Reading Support:
See the Science Stories Folio in the FOSS manual:
• Class-2 Levers
• Class-3 Levers
• The Inclined Plane