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ROAD MAP:

1- Lesson overview

2- Pre-assessment

3- Investigate

4- Individual Work (Scientists)

6- Choice board

7- Post-assessment

8- Reflection

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Objectives:

Apply Newton's 3 Laws of Motion to simple scenarios in Life

Terminologies:

Acceleration

Inertia

Action–Reaction

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A toy car is at rest on a smooth floor. You push it gently, and it starts moving. Then you stop pushing, and eventually it slows down and stops.

Why does the car stop if no one is touching it?

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Friction and forces from the surface act on it

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Motion always requires continuous pushing

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A truck and a small car are both pushed with the same force. Which object will accelerate more?

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B. The small car, because it has less mass.

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C. Both will accelerate the same, because the same force is applied.

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D. The truck, because bigger objects move faster.

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Question: "Remember the tug of war game? What strategies might a team use to win besides pulling harder? How do mass, force, and friction play a role?"

Discussion: Share thoughts with a partner and then with the class.

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Acceleration: Any change in velocity (speeding up, slowing down, or changing direction)

Which Car has the highest Acceleration? (Red/Green/Blue)?

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First Law (Inertia): Objects remain at rest or in motion unless acted upon by a force

Second Law: Force = Mass × Acceleration (F = ma)

Third Law: For every action, there is an equal and opposite reaction equal in Magnitude, Opposite in Direction

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https://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_all.html

Use the net force Tab

1- Would the truck move without pulling?

2- Where did the truck move? Describe its motion

3- Describe an action and reaction in this simulation

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Try to Finish Stage 1 of IXL

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IXL | Newton’s laws of motion | 8th grade science

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Improve your science knowledge with free questions in “Newton’s laws of motion” and thousands of other science skills.

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Try to Finish Stage 2 of IXL

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IXL | Newton’s laws of motion | 8th grade science

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Improve your science knowledge with free questions in “Newton’s laws of motion” and thousands of other science skills.

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Design an experiment using the PhET simulation to prove Newton’s Third Law. How will you measure action and reaction forces?

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Activity: “Visualizing Motion – Newton’s Laws in Art”

Objective:

Represent the concepts of Newton’s Three Laws of Motion creatively through drawings, diagrams, or comic strips.

Make abstract physics concepts visible and memorable.

Instructions

1. Choose a Law or Concept

Students pick one of the three laws, or a combination (e.g., motion of a truck in the PhET Tug-of-War simulation).

Optional: Include velocity, acceleration, or net force in their design.

2. Create a Visual Representation
Students can:

Draw a comic strip showing action-reaction forces in a tug-of-war.

Illustrate acceleration using arrows, motion lines, or speed lines (like in animation).

Design a poster or infographic showing all three laws with examples.

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1. What did I learn?

2. What was the most challenging part?

3. What can I improve next time?

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Identify the Newton's law of motion applicable to each of the following scenarios and explain your reasoning:

1- A car suddenly stopping: Passengers in a car continue moving forward when the car suddenly stops, demonstrating inertia.

2- A hockey puck on ice: A hockey puck slides on ice with little friction and will keep moving until it hits something.

3- Pushing a shopping cart: The acceleration of a shopping cart increases as you apply more force, and it decreases if the cart is heavier.