Lesson plan for parents and teachers: (see lesson plan)

Recommend level: Grade 4 Science

Learning goals:

• Identify and describe different types of gears

• Describe the purposes of various gear systems

Curriculum connections

3.1 describe the purposes of gear systems (e.g., to facilitate changes in direction, speed, or force)

3.4 describe, using their observations, how gears operate in one plane (e.g., spur gears, idler gears) and in two planes (e.g., crown, bevel, or worm gears)

3.7 explain how the gear system on a bicycle works