Unit 1.1: Design Basics

Objectives

• In Lesson 1.1 students explore simple machines, where they are found, how they are used, and why they are the foundation of mechanical devices. They will explore the fundamentals of energy, work, and power then apply their understanding to maximize efficiency and power. Students then investigate the factors that impact pulley systems, how to maximize the efficiency of pulleys, and design their own pulley system in a simulation. Students discover the benefits and drawbacks of different gears and gear trains as well as how to optimize speed or torque through gear ratios. Finally, students build a compound machine using VEX parts that transports a payload (such as a 1000-gram weight) from the floor comprised of at least thee simple machines.