Lesson video

Hello, my name is Miss Robson.

Today, we're going to be practising the scale of counting on and back from a given number within 20.

Then, when we've practised that skill, we're going to use it to play a game.

For today's lesson, you will need a cube or a player for every person that wants to play the game.

You can just have one, if it's just going to be you playing.

Today, I'll be playing by myself, or if you have a talk partner, a parent or carer who would like to play with you, they'll need a cube too.

You'll need a dice and if you don't have one, you could just use a number cards, and you'll need a copy of the board game that we're going to play today.

Pause the video now to collect the resources if you need.

The first thing we're going to do is we're going to practise subitising.

Subitising is when you can look at some spots or some objects, and you can tell how many there are without having to count them.

If I hold up my cube, you know that there is just one cube without needing to count.

We use this skill when we play board games, because every time you roll the dice, you can tell by looking at how many spots are on it, how many moves you get to move on or back.

We're going to practise this skill so that when you come to play the board game, you can read the dice really quickly.

So, because they are laid at the same way that they would be on a dice and they are only spots to six.

You should be able to read them really quickly without needing to stop and count.

I'll show you an example.

If I look at this one here, I know that that is the number six.

Are you ready to have a go? I'm going to show you the cards really quickly.

I'll give you a second to try and understand and then I'll tell you what number the is, ready? Two.

One.

Three.

Five.

Four.

Six.

Let's try and see if we can do that even faster this time.

Are you ready? It's a speed game.

If you think that you're finding this a bit tricky to go quickly, all you've got to do, is play more games with a dice and practise saying how many spots there are without having to count them.

Ready? Six.

Four.

Five.

Three.

One.

Two, wow! You were fantastically speedy that time.

Now that you've practised subitising, and reading the spots on a dice really quickly, we are going move on to counting on and back from a given number within 20.

To count on from a given number within 20, you could use a number line like the one below or a number track like this one here, or you could try counting in your head.

Today, I'm going to be using my number track.

Here's my number track to 20.

I have a dice to know how many more to count on and I have a counter.

I'm going to start on the number nine.

Let me roll my dice to see how many to count on.

Five.

I'm going to count on five, one, two, three, four, five.

Five more than nine, is 14.

Let me try one more time.

I'm going to start this time on the number 12.

I'd like, if you can try to count along with me, I'm going to count on, five again, are you ready? One, two, three, four, five.

Five more than 12 is 17.

This time I'm going to start on the number 10.

I'd like you to have a go at counting on, Just one more.

Use your finger to count on, on the number track on the screen, if that helps.

One more than 10 is 11.

If you also landed on 11, give yourself a really big pat on the back.

Now that we've practised counting on from a given number, we're going to practise counting back from a given number.

Again, you could use a number line like the one below that I'm going to keep using my number track.

I have my number track to 20 again, I have my dice and my counter, but this time I'm counting backwards.

So, I'm going to start on the number 15 and roll my dice.

One.

I'm going to count one back.

One less than 15, is 14.

Let me try one more.

I'm going to stay on the number 14 and see how many more to go back.

Three.

I'm going to count back three more, ready? One, two, three.

Three less than 14 is 11.

This time I'm going to roll the dice and I'd like you to have a go at counting on.

You're going to start on the number 18 and count back.

Six.

Have a go, use the number track on the screen to count back, if that helps.

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

Six, less than 18, is 12.

Give yourself a really big pat on the back, if you landed on the number 12 too.

Now that we've practised counting, we're going to use those skills as well as the subitising that we practised earlier to play a board game.

The board game is called Waterspouts and Spider Silk.

It's a little bit like snakes and ladders.

Here's my board game.

I have one counter and a dice.

If I was playing with a talk partner, I would have another counter so that we could have one edge and we would take it in turns to roll the dice, moving up the board.

But because I'm just playing by myself, I'm just going to use my one counter.

I'm also going to set myself the challenge to see if I can get all the way to the finish in just six rolls.

Now, that's going to be quite tricky, I'm going to need to roll some big numbers and hopefully not fall down any of the spider silk, but we'll see.

I'll start at the beginning on number one, I roll the dice and move that many on.

If I get to the bottom of a drain pipe, I get to climb up like Incy Wincy Spider, all the way to the top.

If I land on a spiderweb, I have to go all the way down the spider silk back to the beginning.

There are also some instructions that tell me to move backwards one space or forwards one space.

So I'll have to have a look and see when I land on them, what they're asking me to do.

Let's start by rolling the dice.

I've rolled a two remember, to use your skill of subitising, I don't need to count how many spots I can quickly see that there are just two spots there.

One, two, I've moved on two and look, move forwards one space.

I get to move one more.

One more than three is four.

I'm now even more luckily, I'm at the bottom of one of the drain pipes, which means that I get to go the whole way out, ready? Zuuuuuuuuup, Up to 14, wow! And I've only rolled once and I'm already here, amazing.

I might make this in six moves.

Let's roll the dice again.

Just one.

I'm going to move one more.

One more than 14 is 15.

Right, let's roll the dice.

Here is the number four, so I'm going to move four more forwards.

One, two, three, four.

Aah, aah, I've landed on the spider silk.

I'm going to have to go all the way back down to number 13.

Let me roll again.

One, one more than 13 is 14.

Let me roll again.

Two more.

One, two, this one says, move forward one space.

For what I hop.

Lets roll again.

Five.

One, two, three, four, five.

I've got even further than the finish line.

I made it in exactly six rolls.

Now that I've shown you, how I played the game, it's your turn to have a go.

Remember you start with your counter at the start and you've got to make your way up the board all the way till the finish line at 20.

Now that you've seen me have a go, it's time for you to have a turn.

If you have a parent or carer around, that could play with you, or if you have a talk partner, you can play with them and you can each have a counter and take it in turns.

Or if you don't have a talk partner, you can play by yourself like I did.

And see how quickly you can get to the number 20.

Now it's time for you to grab your counter, your dice and your board and have a go.

Remember to use your counting on and counting back skills as well as your subitising to quickly see how many moves you're moving.

Pause the video now to complete your task.

When you're finished, press play.

How quickly did you get to the end? It only took me six rolls of the dice to get to the end.

How many times did you have to roll your dice? If you took more than six rolls, why not try again and see if you can get there even faster than I did.

Or if you were playing with a partner who won? Why don't you try playing again and see if the other person could win.

Waterspout and Spider Silk is a game that you can play again and again, with talk partners, parents or carers, not only is it lots of fun, it's also great for practising your counting on and counting back skills.

So why not see if you can find someone else to play it with again? Thank you for joining me today, I've had so much fun.

I love when we get to play games with our maths and I hope that you've had fun too.

You've done some sensational learning.

Why not share your learning with us at Oak National? If you'd like to, please ask your parent or carer to share your work on Twitter by tagging at OakNational and hashtag LearnwithOak.

We'd love to see what you've been getting up to.

Thanks again for joining me today.

See you next time.