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Why do builders need so many big machines?
Force Olympics Unit | Lesson 2 of 6

Why do builders need so many big machines?

Force Olympics Unit | Lesson 2 of 6
Lesson narration:
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# Optional Activity: Forces at Work

Watch these big machines work. Think about what each machine does. Discuss with your class.

What does the dump truck do?

What does the truck-crane do?

What does the bulldozer do?

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# Extensions
Below are ideas for extending this topic beyond the activity & exploration you just completed.
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# Videos: Forces at Work

You’ll find many more kid-friendly videos of trucks and trains at Things that Go TV.

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# Recommended Activity: Forces at Work

Watching construction equipment lets students see forces at work. Encourage them to discuss what each machine does, using “work words” like PUSH and LIFT and MOVE.

Each of these made-for-kindergarteners videos introduces a different type of construction equipment.

  • Bulldozers push piles of dirt and sand.

  • Cranes lift heavy objects.

  • Trucks of all kinds carry or pull heavy things from one place to another.

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Slide Image
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push


1 of 3

to move an object away from you
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pull


2 of 3

to move an object toward you
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machine


3 of 3

a tool that uses pushes and pulls to do something
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Lesson narration:

Grade K

Pushes & Pulls

Pushes, Pulls, & “Work Words”

K-PS2-1

Activity Prep

Print Prep

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In this Read-Along lesson, Vivian watches a house being built and wonders why the builders need so many big machines. The lesson includes a short exercise where students act out the “work words” of their favorite machine. You can extend the lesson with the optional activity, Forces at Work, where students watch videos of construction equipment and practice using work words to describe what the machines are doing.

Preview optional activity

Grade K

Pushes & Pulls

Pushes, Pulls, & “Work Words”

K-PS2-1

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