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You will need:

Notebook
Writing utensil
Computer

Log into computer

Start 2.5.1 Warm Up

25 MIN

September 12, 2025

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Lesson 2.5: Reviewing Mass, Force, and Velocity

Force and Motion

Lesson purpose: to provide opportunities to review key ideas in preparation for deeper learning about collision forces in Chapter 3�

Please refer to this lesson’s Materials & Preparation section in the digital Teacher’s Guide or the print Teacher’s Guide for information about preparing to teach this lesson, including any applicable safety notes. Below are links to resources used in this lesson.�Purple Group: Reviewing Force and Velocity copymaster�Blue Group: Reviewing Force and Velocity copymaster�Green Group: Reviewing Force and Velocity copymaster�Optional: Family Homework Experience: Explaining Force, Mass, and Velocity at Home copymaster�Force and Motion Investigation Notebook, pages 47–59

Force and Motion Glossary

Force and Motion Multi-Language Glossary�Force and Motion Sorting Tool activity: Force and Velocity

Force and Motion Simulation

Note: These materials are made available exclusively for use by students and teachers for whom the corresponding materials have been purchased or licensed from Amplify. Any alterations you make should only be shared within your own school or district. Any other distribution or reproduction of these materials is forbidden without written permission from Amplify.

AMPSCI-CSNA

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Warm-Up

15 MIN

Force and Motion: Lesson 2.5

Activity 1

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Investigation Notebook pg 48

Activity 1

Force and Motion: Lesson 2.5

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Force and Velocity Concepts

20 MIN

Force and Motion: Lesson 2.5

Activity 2

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Force and Motion: Lesson 2.5

Activity 2 - Screen 1

Today, we will review key concepts.

Your understanding of these concepts will be important when the space agency shares some new data about the pod.

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Activity 2 - Screen 1

Force and Motion: Lesson 2.5

How did you match the images to the statements?

The images from the Warm-Up illustrate three of our key concepts.

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Activity 2 - Screen 1

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Force and Motion: Lesson 2.5

Activity 2 - Screen 1

You will run several missions in the Force and Motion Sim to deepen your understanding of the key concepts about force and changes in velocity.

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Force and Motion: Lesson 2.5

Activity 2 - Screen 1

Purple group, green group, and blue group will complete different sets of tests in the Sim.

You’ll select the mission that is called for in your instructions.

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Investigation Notebook

Activity 2 - Screen 1

Force and Motion: Lesson 2.5

pgs 49–51

pgs 52–54

pgs 55–57

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Explaining Forces and Velocity Changes

10 MIN

Force and Motion: Lesson 2.5

Activity 3

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Activity 3

Force and Motion: Lesson 2.5

We received new data from Dr. Gonzales.

After we read her message, you and a partner will discuss the data and claims and decide which claim is best supported by this new evidence.

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Activity 3

Force and Motion: Lesson 2.5

Investigation Notebook pg 58

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Activity 3

Force and Motion: Lesson 2.5

Which claim is best supported by evidence?

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Activity 3

Force and Motion: Lesson 2.5

Let’s discuss the data and claims.

What could have happened to the pod?

👉Teacher action:

Summarize ideas about force, mass, and velocity that help explain what could have happened to the pod. Use the following discussion questions and refer to the key concepts as needed:

Ask, “What is it that normally causes a pod to slow down and stop?” (Students may respond: A force exerted by the thrusters.)
Ask, “In which direction do the thrusters exert a force on the pods?” (Students may respond: A force is exerted opposite to the direction of a pod’s motion.)
Say, “We already received evidence that the thruster force for this pod was no different than the thruster force for other pods.”
Ask, “What could possibly explain this pod's unexpected movement?” (Students may respond: The pod’s mass was different.)
Say, “The new data tells us that this pod was more massive than other ACM pods.”
Ask, “Since the pod was more massive, what can you infer about its velocity change given that the same strength thruster force was exerted?” (Students may respond: It had a smaller change in velocity.)

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Family Homework Experience (Optional)

Force and Motion: Lesson 2.5

Activity 4

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Activity 4

Force and Motion: Lesson 2.5

For this activity, you will explain to a family member what you have learned about force, mass, and change in velocity. Then, respond to the questions.

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Activity 4

Force and Motion: Lesson 2.5

Family Homework Experience: Explaining Force, Mass, and Velocity at Home student sheet

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Self-Assessment (Optional)

Force and Motion: Lesson 2.5

Activity 5

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Activity 5

Force and Motion: Lesson 2.5

For this activity, you will have a chance to reflect on your learning so far.

Remember, these are the same questions you will revisit at the end of every chapter.

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Activity 5

Force and Motion: Lesson 2.5

Investigation Notebook pg 59

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Force and Motion: Lesson 2.5

End of Lesson

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