Levers & Pulleys
Investigation 4
Part 1
Effort in Pulley Systems
Students systematically investigate four different pulley systems. They record the force of a load, the effort needed to lift the load, and the number of ropes supporting the load.
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)
3. Design
- 3.1 Designing Solutions
- 3.1.1 Identifying Problems
Identify and examine common, everyday challenges or problems in which science and technology can be used or has been used to design solutions.
(DE01 3.1.1) - 3.1.2 Designing and Testing Solutions
Identify, design, and test alternative solutions to a challenge or problem.
(DE02 3.1.2) - 3.1.3 Evaluating Potential Solutions
Compare and Contrast multiple solutions to a problem or challenge.
(DE03 3.1.3) - 3.2 Science, Technology, and Society
- 3.2.1 All Peoples Contribute to Science and Technology
Know that science and technology have been developed, used, and affected by many diverse individuals, cultures, and societies throughout human history.
(DE04 3.2.4) - 3.2.2 Relationship of Science and Technology
Compare and contrast scientific inquiry and technological design in terms of activities, results, and influence on individuals and society; understand how science supports technological development and vice versa.
(DE05 3.2.5)
Students apply their content knowledge from the previous parts of this investigation.
3. Lesson set up and Management
Materials:
Student Management:
Have student(s) sort materials or make a materials list on the board; have one person from each pair gather the materials.
Specific students can be designated as “materials persons”.
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 Word Bank Entries
Make Content/Inquiry Entries
Reading Support:
See The Work of Pulleys in the FOSS manual’s Science Stories Folio.