[upbeat music] [whimsical music] - Hey there, friends at home.

Lily and I were just noticing how much she's growing.

- Yeah, can you tell?

Can you see that I'm almost as tall as Omar?

- Lily, what are you gonna do with all this new height?

- Well, I'm gonna be able to reach for the top shelf, look over the window sill, and leap almost as high as the clouds.

- Changing, growing.

It's really exciting, but it's also different, and sometimes when things are different that can make us feel uneasy.

- Hmm, yeah.

Yeah, like when I lost my first tooth, I felt scared, but then I got excited when the tooth came in.

- Yeah, look at those chompers now!

You know there's a lot on our body that always changes and also some things that always stay the same.

- Seems like a lot is changing.

What's staying the same on my body?

- Well, you'll always have your blue eyes.

- And you'll always have your brown eyes.

- Yeah, that's true.

And you will always have yourself.

You'll always have Lily.

- Yeah, but wait, except for when I play pretend and I'm someone else.

- Of course, of course, that's true.

But actually, even then, you'll still have yourself.

- All this changing, I don't have to be afraid of it, but how can I keep track of the way my body is changing and growing?

- Well, one way is we can measure how tall you've gotten.

- Hmm, well, I already know I'm as tall as George the Plant.

- [Omar] There we go, you are one George the Plant tall.

We can also measure how tall you are using smaller objects.

- How would we do that?

- I know someone who can show us.

[fast-paced music] First, we invited our friends to measure with blocks to see how tall they are.

This is Gianna.

She's three years old and lives nearby.

Gianna made a tower as tall as she is.

Let's watch.

[bell ringing] - [Lily] This is Sariah, Maya, and Marissa.

They're sisters.

They also took turns measuring each other with blocks.

First was Sariah.

[bell ringing] - I'm gonna knock it down with my head!

[Girls giggle] - [Omar] Then Maya.

- [Lily] They loved building.

Oh, it's getting pretty close to your head.

- [Omar] Pretty close.

- [Lily] Pretty close.

[bell ringing] - [Lily] And they also loved knocking down the blocks when they were done.

- [Omar] We had so much fun measuring with blocks that we decided to play Just As Tall As I Am.

It's a game where we try to find items that are just as tall as us.

As you'll see when you play, the game can be challenging on the way to find the items that are just as tall as you.

You may find many things that are taller and many things that are shorter.

[upbeat music] First, Maya and Sariah wanted to see how they could be as tall as Lily.

They thought just maybe they could pretend to be as tall as Lily by flying high on the swings.

What do you think, friends at home?

On the swings, are Maya's feet higher than Lily's head, lower, or do they reach just as high?

[bell chimes] Yeah, her feet reach higher than the top of Lily's head.

- [Lily] What about Sariah?

When Sariah is on the swing, do her feet reach higher, lower, or just as high as my head?

[bell chimes] Yeah, Sariah swung almost to the top of my head.

Her feet are just a teeny tiny bit lower.

- [Omar] Next we tried the benches.

Do you think this bench is longer than Sariah?

Shorter than Sariah?

Or just as long as Sariah?

[bell chimes] Yeah, the bench is longer than Sariah because we can see space on both sides of her.

Ooh, ooh, okay, what about the trash can?

Friends at home, what do you think?

[bell chimes] Yeah, Sariah's head is way above the trash can.

Sariah is taller than the trash can.

Let's do one more.

Let's see how they compare to the small swings.

What do you think, friends at home, are Maya and Sariah shorter than the small swings?

Taller than the small swings?

Or are just as tall?

- [Lily] Yeah, Sariah is a little shorter and Maya is almost as tall.

- [Omar] Yeah, comparing is one way to measure.

And remember, we were also measuring ourselves with blocks like Lily, when our friend Gianna use blocks to measure you.

- [Lily] Look how Gianna lined up the blocks end to end next to my body.

She lined them up so carefully making sure there was no space between the blocks.

- Three, four, five, six, seven, eight, nine, ten!

- Ten!

- [Omar] Ten, we counted the blocks to see how many we had and to see how many blocks tall Lily is.

- [Lily] Isn't it cool the way our bodies keep growing and changing?

- It's so cool.

Friends at home, how are your bodies growing and changing?

How do you know?

How do you keep track?

Are there things you can do now that you couldn't do when you were younger?

- I'm sure there are!

Friends at home, we hope you have fun growing.

- And measuring!

We'll see you later.