Loading…
Loading Mystery…

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

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

Force Olympics    Read-Along Mystery 2

Kforceolympicsmystery2thumbnail

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

Beginning Exploration (1 of 1)
Enter full screen whiteFull Screen
Exit full screen whiteExit Full Screen

My name is Vivian.

I live in a place where everything is new.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

The houses are new.

Even the streets are new.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

My daddy is a builder.

He helps build the new houses and streets.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

I like to watch the big machines go by our house.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

One looks like this.

It has a big, long arm.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

Another looks like this.

The back is filled with dirt.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

I wonder, why do builders need big machines?

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen
stop and talk

Stop and Talk

Why do you think builders need big machines?

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“What is that?” I asked Mama.

“An excavator,” she said. “It digs big holes.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“I could dig a big hole with a shovel,” I said.

“Why don’t you give it a try?” Mama replied.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

I got my shovel from the garden shed.

I started to dig.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

I dug through the grass.

I dug through the roots.

I found rocks underneath.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

Under the rocks, the soil got harder and harder.

I dug and dug and dug…

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“How’s it going?” Mama asked.

“Digging is hard work!” I told her. “Maybe a digging machine is a good idea.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen
stop & talk

Stop & Talk

Can you think of any other machines that help build houses?

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“Daddy will be home soon for lunch,” Mama said.

“I can’t wait to ask him more about the big machines!” I said.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

Daddy and I watched the trucks outside.

“Each machine has a job,” Daddy said. “Some work together.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“I know that one! It digs.”

“That’s right,” Daddy said. “The excavator digs dirt and puts it in a dump truck.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“The dump truck takes the dirt away and dumps it somewhere else. Watch!”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

The back of the dump truck tips up.

The dirt slides out.

Then the back goes flat again.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

I looked around the busy lot.

“That tall machine is using its hook to lift a big box!”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“That’s a crane,” Daddy told me. “Cranes lift heavy things up high.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“See that one?” Daddy asked. “That’s a bulldozer.”

“Does it doze bulls?” I laughed.

“Not exactly,” he said. “It pushes. Bulldozers push.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

The last truck had a big tank on the back.

The tank was spinning around and around.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“That,” said Daddy, “is a cement mixer. It mixes the cement that will go in the hole.”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“Lunchtime is over. Time to get back to work!” Daddy said. “What have you learned?”

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“Machines do lots of hard work!” I told him.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

“That’s right!” Daddy said. “Every machine has a job to do.”

“Every person, too.” I replied. “When I grow up, I’m going to do the same job as you.”

THE END

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen
Beginning Optional Activity: Forces at Work

Optional 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.

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen

Activity Prep

For the Read-Along Mystery, you don’t need any materials.

As an optional activity, we suggest watching videos of construction equipment, discuss what each machine does, and identify the "work words" involved.

Beginning Optional Activity: Forces at Work

Optional Activity: Forces at Work

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

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen
Beginning Complete!

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

Enter full screen blackFull Screen
Exit full screen blackExit Full Screen
Next