Open-and-go lessons that inspire kids to love science.

Sign up now for tons of free lessons like this one!

Force Olympics Unit Share
Mystery 2 of 6
Why do builders need so many big machines?
Read-Along Mystery 2 image
Why do builders need so many big machines?
Scroll for prep
Full Screen
Exit Full Screen
Full Screen
Exit Full Screen
Full Screen
Exit Full Screen
Full Screen
Exit Full Screen
Full Screen
Exit Full Screen

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?

Full Screen
Exit Full Screen

You've completed the Read-Along & Optional Activity!

If you have more time, view the extensions.

Full Screen
Exit Full Screen

Extensions

Below are ideas for extending this topic beyond the activity & exploration you just completed.
Full Screen
Exit Full Screen

Videos: Forces at Work

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

Full Screen
Exit Full Screen

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.

Full Screen
Exit Full Screen
Overview
Grade K
Topic Forces, Machines, & Engineering
Focus Pushes, Pulls, & “Work Words”
Print Prep
Activity Prep

Switch to non-narrated version

In this Read-Along Mystery, Vivian watches a house being built and wonders why the builders need so many big machines. The Mystery 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

Prep Instructions

This activity does not require supplies.

As an optional activity, we include videos of three construction machines, like the ones Vivian saw in the story. The videos include songs about the construction machines and what they do.

We suggest you preview the videos. When you show them to your students, you may want students to act out what the machines do. After watching the videos, ask your students to describe what each machine does and identify the "work words" involved.

Overview
Grade K
Topic Forces, Machines, & Engineering
Focus Pushes, Pulls, & “Work Words”
Extensions