(playful music) (bright sound) - 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 then we are going to be writing equations for the number 11 through 19.

Today, when we do our numeracy talk, our friend Dotson is going to come and help.

Dotson is a subatizing superhero.

When Dotson comes today, he is going to be showing us a number on a double 10 frame.

That means that there could be 10 on the top frame and 10 on the bottom frame, there will be 20 boxes all together.

After we see the double 10 frame, we will take a picture with our camera in our brain and then we are going to be trying to think about how many counters we saw on the double 10 frame.

Now today, there's a little trick.

Today, we are going to be building it on the rekenrek for whatever number we might see on the double 10 frame.

Get ready, here comes our double 10 frame now.

Did you see our double 10 frame?

Great, so now we're going to be talking to our friends, Brian and Donovan about what they saw and how they built it on the rekenrek.

Our friend Brian said that he built 16 on the rekenrek because first there was a full 10 frame and that is the top row of a rekenrek and then he saw six more.

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

So Brian saw the double 10 frame and took a picture.

He noticed that the 10 frame at the top was filled.

That means on the rekenrek, he would slide over all of the beads because there are 10 beads on the top.

Then he said there were six more.

So on his rekenrek, he would have to move over six more.

Remember the beads that are over here we pretend are invisible.

10 and six ones is 16.

Great thoughts, Brian.

Here is our I can statement for today.

I can work with numbers 11 through 19 and write their equations.

Today, we're gonna take a closer look at one of our teen numbers.

We're going to talk about the number 15.

I asked a group of friends everything that they could tell me about the number 15.

Here's what they said.

My first friend told me that 15 was less than the number 16.

Here it is, 15.

And she was right because if there was 16, that means there'd be more.

So if I was counting, I would say 15, then I would say 16.

15 is less.

My next friend said that you can make 15 if you have a full 10 frame and five more.

Let's take a look.

Here is my full 10 frame.

And he was right, five more.

10 and five is 15.

The next friend told me that 15 comes after 14.

She was right.

If I had the number 14, next would be 15.

Hey, we can add that in our counting sequence.

14, 15, 16.

And my last friend said that 15 can also be represented as 10 plus five.

10 and five more.

10 plus five equals 15.

Great job Math Mights and thanks for all your help.

Today, we're gonna be really diving deep with our teen numbers.

When we do our teen numbers today, we're going to be trying to build them with all of the math tools that we have been using and then we're going to be writing the equation to match the number.

And lastly, we're gonna try to make the number in a number bond.

The first number I already laid out on our double 10 frame, let's take a look.

So here is our first number.

Do you know what number that is?

Let's build it on our tools.

The first tool we'll do is our counting buddy.

So here is our 10.

So we're gonna slide 10 beads over.

And then here, there are eight more.

So I'm going to slide over eight more.

10 and eight.

Let's build it on our rekenrek.

We're gonna start here and build 10 to match our 10 and then eight more to match our eight more.

Did you figure out what our secret number was?

Let's write the equation.

So the first was our 10, 10 plus eight.

If I get out my place value cards, I can do the 10 and the eight.

And remember with our value pack, we can click them together and we can see our secret number.

Do you know what it is?

That's the number 18.

Can you say it with me, say 18.

10 plus eight is 18.

We now know that our secret number is 18 so we're gonna put it here in our number bond.

Now we're gonna try to figure out the pieces.

The first piece was our 10 and the second piece was our eight.

The two parts were 10 and eight.

When we put them together or clicked them, it became 18.

Great job figuring out our secret number was 18.

Let's try another one.

Here, I built another secret number.

Do you know what it is?

Let's use our math tools to help us.

So we're gonna start with our counting buddy and I'm going to make sure there are 10 over and then it looks like six more.

So I need to get rid of four beads because I see on the 10 frame that four missing and I had all my beads over.

So now 10 and six.

We can also go to our rekenrek.

Let's build the 10 on the top and the six on the bottom, 10 and six.

Now using what we built on our math tools, let's make the equation.

Here, we have 10, 10, and down here we have six, 10 plus six.

If you figured it out, say it with me.

10 and six is 16.

We can use our place value to show that.

Here is our 10 and our six.

And just like the value pack, we can click together and become the number 16.

Now let's try to take it and put it in our number bond.

Here, we know it's 16.

16 is 10 and six and we knew that 10 plus six was our secret number 16.

Great job Math Mights, you figured out our secret number was 16.

I have another secret number built for you.

Let's take a look.

Here, I have our next secret number.

I see there are 10 on the top and there's nine on the bottom.

Now we're gonna build it on our counting buddy.

I'll slide over 10 beads and then I need nine more.

10 and nine.

Let's go to our rekenrek.

We can build the 10 and the nine.

One 10 and nine ones.

Did you figure out our secret number?

Let's build it on our equation.

10 plus nine more equals...

I think we're gonna need our place value strips.

Here is our 10 and our nine, click them together like the value pack.

Hey, our secret number is 19.

Let's write it.

10 plus nine equals 19.

In a number bond, we would write the 19 as the sum and the two parts, the 10 and the nine more.

10 and nine make 19.

Great job, Math Mights using all of the math tools to make the different secret numbers.

We're gonna play a game now, this game is called the 10 way.

The way it works is I will show you a number, it will be one of our team numbers, and then you will say it the 10 way.

Let me show you the first one as an example.

So the number is 11.

Now to say it the 10 way, you would say 10 and one.

Then I will flip it and I'll make the next number.

It's going to go pretty quick so I'm gonna need your help to say it the 10 way, are you ready?

Here we go.

The next number is 12.

Say it the 10 way, 10, two.

The next number's 13, say it the 10 way, ten, three.

The next number is 14.

Say it the 10 way, 10, four.

The next number is 15, say it the 10 way, ten, five.

Now we have 16, 10, six.

Now we have 17, 10, seven.

Now we have 18.

Say it the 10 way, 10, eight.

Now we have our last one, 19.

Say it the 10 way, 10, nine.

Wow, Math Mights, you did a great job helping me say all of our teen numbers the 10 way today.

Today, you are going to get to play the team puzzle in the download.

Here's how we play.

Each puzzle is gonna make three pieces come together to show one teen number.

Let's try it.

So the first piece I'm gonna pick is 10 plus seven equals 17.

The middle piece will be the number bond.

Here it is, 10 and seven makes 17.

We're gonna put them together.

And the last piece will be what does the number look like on the double 10 frame?

Well, it's 10 and seven so we need to find the piece.

Here it is, 10 and seven and match it together.

We're gonna move that puzzle out of the way.

Let's try the next one.

Here is 10 plus nine equals 19.

Here it is on a number bond, 10 and nine make 19.

The last piece should have a 10 and a nine.

Here it is, 10 and nine.

Put the puzzle together and then we're gonna move it out of the way.

The last one... Oh, this should be easy, let's check.

10 plus three equals 13.

13 is 10 and three.

And on the 10 frame, we can see 10 and on the bottom 10 frame, we see three, 10 and three.

I hope you enjoyed playing the team puzzle game.

We had so much fun today.

We did the numeracy talk with our friend Dotson, building the number on the rekenrek, and then we practice doing the equations to match the different teen numbers.

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

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