Physical Science: Moving Big Things

Sample Material

» Table of Contents (PDF)
» What's the Big Question (PDF)
» Learning Set 1 (PDF)

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The Big Question: How do machines help move large, heavy objects?

To answer the Big Question, students respond to this Big Challenge: Lift a large heavy object — a crate — to the top of a cliff using a machine. They begin by investigating what makes things move and defining balanced and unbalanced forces. They then investigate various simple machines and their uses. Through investigations, data collection, and analysis of several simple machines, students qualitatively define mechanical advantage. In the process they are introduced to Newton’s laws of motion and energy, and energy, transformations. Ultimately, students combine the simple machines to model lifting a crate with a fragile rope to the top of a cliff.

 Implements STEM initiative
 Uses the Engineering Design Cycle

• balanced and unbalanced forces
• combining simple machines
• complex machines
• energy and energy transformations
• force-distance trade-offs
• friction
• gravity
• inclined planes
• levers

• measuring forces
• mechanical advantage
• motion
• net force
• Newton's laws of motion
• pulleys
• simple machines
• wheel and axle

• asking questions
• careful observation
• interpreting data
• interpreting maps
• keeping good records
• learning laboratory techniques
• making measurements

21ST CENTURY SKILLS
Collaboration
Communicating plans and ideas
Developing explanations
Finding trends in data
Critical thinking including:

• building on the work of others
• collecting, organizing, and analyzing data
• observations and interpretation using science knowledge
• using evidence to support claims