Levers & Pulleys
Students play a game of setting up different pulley systems to practice what they have learned in the first two parts of Investigation 3.
- 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.
- 2.1 Investigating Systems
- 2.1.1 Questioning
Generate questions that can be answered through scientific investigations.
- 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.
Students apply their content knowledge from the previous parts of this investigation.
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”.
Monitor student progress for concept acquisition using the Assessment Chart for Investigation 3. You may want to have students come up and demonstrate to you a pulley system or two to check for their understanding.
Home School Connection Student Sheet #3 is a good class demo activity.
The game is useful. Again, student pairs might be easier to manage.
Make overhead transparencies of all Student Work Sheets to aid in review and discussion.
Read Teacher and Student background sections before doing the investigations.
Write about Sparky and his troop.
Research Block and Tackle.
Write a story about how the pulley got its name.
See The Wedge in the FOSS manual’s Science Stories Folio.