K-6 Science for the Next Generation

Lesson Plans
Third Law of Motion

Learning Objectives

  • Understand Newton's third law of motion and how forces act in equal and opposite pairs.
  • Explain how Newton's third law applies to a rocket launch and the forces involved.
  • Describe how sprinters use action and reaction forces to propel themselves forward at the start of a race.
  • Illustrate how octopuses utilize jet propulsion as an example of Newton's third law of motion.

Introduction and Hook

Begin with a discussion on Newton's third law of motion, emphasizing the concept of action and reaction forces.

Go to the Lesson

Show a short video clip of a rocket launch to visually introduce the concept of action and reaction forces.

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Direct Instruction

Explain Newton's third law using the example of a rocket launch, detailing how forces act in pairs.

Discuss how sprinters use action and reaction forces to propel themselves forward at the start of a race.

Guided Exploration

Watch the video 'Forces in Action on the Football Field – Quiz Edition' to see how forces affect motion in sports.

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Facilitate a discussion on how octopuses use jet propulsion as an example of Newton's third law.

Hands-On Activity

Conduct an experiment where students use balloons to demonstrate action and reaction forces.

Use the 'Applied Force' worksheet to explore contact forces and resulting motion in real-life scenarios.

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Independent Practice

Assign students to illustrate and explain how Newton's third law applies to different scenarios, such as a rocket launch or a sprinter's start.

Check for Understanding

Use the 'Balanced and Unbalanced Forces' assessment to evaluate students' grasp of force interactions.

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Review and Reflection

Encourage students to reflect on how Newton's third law is evident in everyday life, such as in sports or animal movement.

Assessment and Extension

Administer the 'Forces and Motion' assessment to test comprehension of the lesson's key concepts.

Try the Quiz
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Provide the 'Crash Test Egg Challenge' as an extension activity to apply Newton's laws in a creative and practical way.

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