Unit 2: Structures and Mechanisms - Systems in Action
The smooth functioning of society depends on a great number and variety of systems. The needs of society can influence the evolution of established systems or demand the introduction of new ones. Whether large or small, human, mechanical, or natural, all systems consist of many components that can be studied and improved. Students will learn to calculate the mechanical advantage of mechanical systems, and will learn about the overall safety, efficiency, and effectiveness of a variety of systems. It is necessary to provide opportunities for students with disabilities to participate in these or comparable activities.
When making and/or experimenting with and testing devices or structures, it is important that students be able to identify and explain the importance of practices that ensure their personal safety and the safety of others. This includes knowing the correct way to use tools and equipment, knowing when and how to use protective eyewear, and knowing how to operate electricity and electrical systems safely.
Summative Assignments
Summative Assignment #1 - Systems in Action
Summative Assignment #2 - Investigate a Working System (Student Example - Third Class Levers, Student Example - Wheels_and_Axles)
Summative Assignment #3 - Impacts of Systems
Notes/Handouts:
- Concept Map
- Types of Systems
- Systems PowerPoint
- Simple Machines Review Handout
- Exploring Mechanical Systems Assignment
TechnicalManuals
Ergonomics
Hydraulics and Pneumonics
Wheels and Axles - Gears - Pulleys
Levers
Inclined Plane and Wedge - Tools that Rely on Simple Machines
- Calculating Work
- Friction
- Simple Machine Resources (Simple Machines, Inclined Planes, Levers, Pulleys, MA, Wedges and Screws, Wheels and Axle)
Applets to teach Forces, Loads, Materials, and Shapes