[cheerful music] - Hi friends.

Welcome to my classroom.

I'm Miss Zoe and today we are going to talk about place value.

What is place value?

Place value pretty much means that each digit in a number has a value, right?

And so zero through nine are our digits and they can make up other numbers.

Let's say like the number 15.

What does that mean?

Well, it means we have 15 of something, right?

So today we are going to use our ones and our 10 stick we made out of snap cubes.

And our 10 stick represents 10.

And we don't really have to count it 'cause I know there's 10, but we're gonna make sure just in case.

One, two, three, four, five, six, seven, eight, nine, 10.

So if I had the number 15, what does that mean?

That means I have five ones and one 10.

Five ones and one 10.

What does that look like on a place value chart?

Well, let me take 15 of something.

So I'm gonna use these snap cubes.

Let's count out 15.

One, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15.

So I have 15 ones.

Now that's a lot to look at and a lot to count one by one.

So is there a way that we could represent this on our place value chart?

Yes.

So we are going to take our 10 stick and trade them for 10 ones.

One, two, three, four, five, six, seven, eight, nine, 10.

And because I took 10, I have to replace it with something, right?

So we have to replace it with a 10 stick.

And we have to replace it with the same value.

10 ones for one 10 stick.

So now let's take a look.

We have five ones and one 10.

And that matches our number 15, five ones and one 10.

So when we write out the number, it'll look like this, but when we work with place value charts, it'll look like this.

So now what happens now that I have only five ones, can I trade that up for a 10 stick?

Mm-mm because it's not the same value.

I would have to keep going until I had more ones so I can trade it for a 10.

And that's what we're gonna play today.

I'm here with... - Madison.

- Madison.

I call her Maddy.

Well, so today we're gonna play the place value game called trade up.

And we're gonna use the die.

She's gonna roll, she's gonna count out ones until we hit 10 or more.

And then we're gonna trade up for a 10 stick.

And how many ones are on the 10 stick?

- 10.

- 10.

Excellent.

Can you roll the die?

- Yep.

- And what'd you roll?

- Three.

- A three.

- A three.

- So she's gonna hand me, can you count them out?

- One, two, three.

- All right.

One, two, three.

Do we have enough to trade for a 10 stick?

- Nope.

- Nope not yet.

- Four.

Wait no, five.

- Five.

- One, one, two, three, four, five.

- All right, I'm gonna add the five.

One, two, three, four, five.

Let me count.

One, two, three, four, five, six, seven, eight.

Do I have enough to trade for a 10 yet?

- Nope.

- Nope.

All right, roll again.

- Four.

- Four.

- One, two, three, four.

- Four.

One, two, three, four.

I'm gonna count.

Ready?

Count with me.

- [Both] One, two, three, four, five, six, seven, eight, nine, 10, 11, 12.

- [Miss Zoe] Do I have enough to trade for a 10?

All right, I'm gonna give you 10 and you're gonna give me a 10 stick.

One, two, three, four, five, six, seven, eight, nine, 10.

So here's 10 for you.

And may I trade that for a 10 stick, please?

- Yeah.

- All right.

So now I have two ones and how many tens?

- 10.

I mean ones.

- I have two ones and how many tens?

- 10.

- I have 10 ones in this 10 stick.

So I have two ones and one 10 stick.

Excellent.

So what number does that make?

- 12.

- 12.

And here's our number 12.

Great.

Let's try again.

- Two.

- Two.

One, two.

Keep going.

- Four.

- Four.

- One, two, three, four.

- Four.

Keep going.

Two, three, four.

One.

- Keep going.

- Four.

One, two, three, four.

- One, two, three, four.

Let's count how many ones I have all together.

Ready?

- [Madison] One, two, three, four, five, six, seven, eight, nine, 10, 11.

- [Miss Zoe] All right, so can I trade 10 ones for a 10 stick?

- Yes.

- Let's count.

Two.

- Three.

- Four, six, eight, 10.

All right, I'll trade you for a 10 stick.

So now I have one ones and one tens, what number is that?

- 11.

- 11.

All right.

Last number.

I'm going to write the number and you're going to show me with our cubes.

- 26.

- So our number is 26.

Can you give me how many ones?

- Six.

- Six.

All right.

Hand me six.

- One, two, three, four, five, six.

One, two, three, four, five, six.

- Great.

So one, two, three, four, five, six.

And how many 10 sticks are you going to give me?

- Two.

- Two.

10, 20.

10, 20.

So that's 10, 20, one, two, three, four, five, six.

Excellent!

Alright, friends, thanks for hanging out with us and playing trade up.

Thanks.

Bye!