(jolly music) (bells and chimes) - [Children] Math Mights.

Hi, kindergarten Math Mights, my name's Mrs. Gray, and I can't wait to do math with you today.

Today, we are going to be doing a numeracy talk with our friend Dotson, and we're gonna be working with numbers 11 through 19 and building them in different ways.

Today, for our numeracy talk, our friend Dotson is coming.

(upbeat cinematic music) Dotson is the subitizing superhero.

Today, Dotson is going to show us a Counting Buddy Senior.

On the Senior, we will see 10 beads in one color and 10 beads in a different color.

When he shows us the Counting Buddy Senior, you are gonna take a picture with your brain.

You are gonna try to remember how many beads you see on it.

Then, we're gonna try something different today.

You are going to take what you saw with your camera on the Counting Buddy and we're going to try to build it on a double 10 frame mat.

Are you ready?

When you see it, take a picture with your brain.

Did you see the Counting Buddy Senior?

How many beads did you see?

Let's take a look at what our friend Brian says.

Brian said that he built 18 on the double 10 frame mat because there was a group of 10 beads, which is a full 10 frame, and eight more.

Let's take a closer look at what Brian said.

Brian said, when he looked at the Counting Buddy, he noticed that there was 10 beads, and the 10 beads means he needs a full 10 frame.

Let's build that.

Here is our full 10 frame.

The 10 is here, one 10.

Then Brian said that he saw there was eight more beads, so we're gonna to put eight more on the bottom 10 frame.

Here is our one 10, and eight more.

Here is our one 10, and we'll slide over eight more.

This is what Brian built to show the beads on the Counting Buddy.

Let's take a look at what our friend Donovan says.

Donovan said that he built 20 on his double 10 frame mat at first, then he took off two of the chips, because he noticed that on the Counting Buddy Senior, two of the beads were left up by the Counting Buddy's head, which means we pretend they're invisible.

Let's try to build it the way Donovan did.

Donovan said he filled up his two 10 frames, so he had two groups of 10.

Then, when he looked at the Counting Buddy, he noticed two of the beads were invisible.

That means we have to take two of the chips off to represent the two invisible beads.

Take them off.

And now he saw he had 18.

He saw the two that were missing.

Great job on the numeracy talk, Math Mights.

Now, let's take a look at our I can statement for today.

I can show numbers 11 through 19 in different ways.

Take a look at this question.

What number does 10 plus one represent?

How do you know?

Brian said that he knew that 10 plus one makes the number 11 because Value Pak helped him see the value in the numbers.

Let's take a closer look at what Brian said.

Brian said 10 and one made 11.

Let's call on our friend Value Pak to help explain how Brian saw that.

(jolly music) Value Pak is a very amazing Math Might.

Value Pak is part of a family.

They can click together and separate according to their place value.

So Value Pak will be very helpful to help see the 10 and some more.

So when Brian built it, he saw the 10 and the one, and he said that it would be 11, because when you have 10 and one and you put them together, they click and make the number 11.

Here is how Brian built it.

He built the 10 by filling up one of the 10 frames.

Then, he said after he had one 10, he needed the one more.

10 and one, one, makes 11.

Great job, Math Mights.

Thanks for all your help, Brian.

Now we're gonna do an activity where we're going to be organizing expressions and numbers to try to figure out which number sentence will match our secret number.

Here is our secret number.

This is the number 14.

Can you say it with me?

Say 14.

Great job.

Now, 14 is set up in one of these equations.

Hmm.

Do you know which one it is?

I think we should build it in order to figure out which equation matches our secret number.

The first one is 10 plus five.

So for that equation, I need to build the 10 in the 10 frame, and then we are going to need to build our five.

Here's our one 10 and five ones.

One, two, three, four, five.

Take a look.

If I had one 10 and five ones, does that match our secret number?

No, I don't think so either.

Let's go to the next one.

The next equation says 10 plus two.

I already have my 10 built, so now I need to build two more.

One, two.

One 10 and two ones.

Does that match one 10 and four ones?

Hmm.

No, I don't think that one matches either.

Let's try the last equation.

10 plus four ones.

Here is our one 10, and now we'll build four more.

10 and four ones.

And look, if we are able to break it apart, I think we found a match.

10 and four ones is 14.

We can write the equation.

10 plus four ones equals 14.

Here is our matching equation.

Let's match more equations to the different numbers.

So down here, I have three different equations.

I have 10 plus seven, 10 plus nine, and 10 plus eight.

Each of those equations matches one of the numbers over here.

To figure out which one it matches, we're gonna be building it using a 10 frame and some extra ones.

The first one says 10 and seven.

so I'm going to be building a full 10, and then I need seven.

10 and seven ones.

10 and seven ones.

Which of these numbers do you think it matches?

Let's check the first one, 10 and eight.

Nope, that's not a match.

Let's check the next one.

10 and seven, 10 and seven.

Hey, we found a match.

Let's pair it up on our board.

So 10 plus seven is the number 17.

Let's try our next equation.

It says 10 plus nine.

I already have my 10 built, so now I need nine extra ones.

10 and nine.

Let's check this number, 10 and eight.

That's not a match.

Let's keep going.

We already matched the number 17, so we'll try this one, 10 and nine.

We found a match.

Let's pair it up on our board.

10 plus nine is the number 19.

Let's try our last equation.

It says 10 plus eight.

Here's our 10 already built.

Now we need eight more ones.

10 and eight more.

Let's break this number, and we see 10 and eight more.

When we click it, we know that's the number 18.

We found a match.

Great job, Math Mights.

Let's pair it up.

10 plus eight is the number 18.

Great job Math Mights.

Now we're going to try it again, but this time, I'm already going to have it built on a double 10 frame and we're going to have to try to write the equation that would match what we see on the double 10 frame.

Let's take a look.

So here, I have a number built on the double 10 frame.

You can see there is one 10.

And down here, there is eight more.

I know it's eight because there is five and three more.

Or maybe you saw the two empty boxes.

10 and eight more.

Hmm.

How do you think we should write that as an equation?

Let's give it a try.

So we're going to start with our 10.

We know this is a group of 10, one 10, so I'm going to write the number 10.

And down here, we had eight.

We could say plus, because we have 10 and we're getting more.

10 plus eight more, that equals, do you know?

Let's look at our place value cards.

10 and eight, click it together.

That's the number 18.

10 plus eight equals 18.

Let's try another one.

Here, I have a full 10 frame, one 10, and down here, there are five.

I know there's five because there's five empty boxes.

Let's see if we can write the equation to go with it.

So we're going to write one 10.

Plus, we have five extra ones, five.

Pulling out our place value cards, we had 10 and five.

When we click it together, we see we had 15.

Let's write 10 plus five equals 15.

Great job, Math Mights.

Now it's your turn to play.

You have the game board for the game.

On the left side of the game board, you will see different double 10 frames, and on the right side, you will see equations.

You are going to have to match the double 10 frame to the right equation.

I hope that you guys had a great time today.

You did the numeracy talk with our friend Dotson and then we practice building the numbers 11 through 19 in different ways.

I hope you had a great time, and I can't wait for you to come back soon.

(jolly music) (gentle music) - [Boy] Sisforteachers.org.

- [Girl] Changing the way you think about math.

- [Presenter] The Michigan Learning Channel is made possible with funding from the Michigan Department of Education, the state of Michigan, and by viewers like you.

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