﻿Hello everybody, welcome back. In the last lesson, we did some counting in twos and maybe you've been doing some practise around the house counting things in twos. Well done if you have but don't worry if you haven't because in this lesson, we're going to carry on practising and learning some new things about counting in twos. Do you remember the last lesson, we use near econ pieces and we found all the multiples of two. And we put them against a number line, didn't we? Can you remember what the numbers are called if they haven't got a numicon piece by them? Have a look at the number line. You see that one, three and five. They haven't gotten multiple of two numicon piece by them. Can you remember what sort of numbers they are? Did you remember it's odd numbers. So yesterday we practised counting on multiples of two by whispering the odd numbers and saying out loud the even numbers. Do we have a go at that today? So we're going to say zero and then whisper one. Are you ready? Zero, one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20. And I hope you said those teen numbers really clearly? Let's just try now counting backwards and we'll just say the multiples of two. That's a little bit trickier so I'll leave the number line there for you and see if you can join in with me. So we'll start at 20 go all the way back to zero. Are you ready? 20, 18, 16, 14, 12, 10, eight, six, four, two, zero. Well done everybody. So here we've got the number line without the numicon pieces. Maybe you'd like to pause the video here and just have a little practise saying the multiples of two, first going forwards, and then going backwards. If you get really good, I'm sure you can start to do it without looking at the number line, but it's there if you just want to check. Go and have a little go. Do you remember the last lesson we showed you some counters? And these counters are really good for helping us count in our multiples. We can think of each counter as a group of two, because there's two dots on each counter. So we can count the groups. One group, two groups, three groups. Or we could count them as one two, two twos, three twos. And we can also count the dots by using multiples of two. Two, four, six, that's six dots. So three groups of two is six. Three twos is six. And we're going to use these counters in the rest of the lesson to practise our counting in twos. Maybe you managed to make your own counters. And if you did, I'd like you to lay them out in front of you just like I've laid my counters out here. Can you see, does it align with- You see this five and then one underneath? See if you can put your counters, just like mine. Perhaps pause the video for a moment so you can do that. Okay, did you manage? Well done. So now we can count in both ways. We can count how many groups of two or how many twos or we going to count how many dots all together. Now I'm going to show you with a pen, but you can touch your counters. And again, you might want to pause the video. So first of all, count the groups. Are you ready? So we'll say one two, two twos, like that. One two, two twos, three twos, four twos, five twos, six twos. And do you want to pause? Do it just like that. Check that you've got six twos. Okay, well done. Now, we can count how many dots there are all together. And that's what I'm going to be counting in our twos. So we can say two, four, six, eight, 10, 12. There are 12 dots and there were six counters. So we can say six twos are 12. We can use our counting also to find out how many groups of two we've got and how many dots all together. So we can say it like this, can't we? One two, two twos, three twos, four twos five twos, six twos, seven twos, seven groups of two. And then we can use our counting in multiples of two to find out how many dots altogether. Can you just join in with me? Two, four, six, eight, 10, 12, 14. 14 dots on seven counters. Seven twos are 14. In a minute, I'm going to ask you to go and find some things from your house, with permission, from your grownup that you can collect and that you can use to count in twos. Now in the last lesson we counted things in twos like socks and shoes, things that always go together in pairs or in groups of two. But you can count anything into twos. They don't have to be things that usually go together in twos. Maybe hedgehogs, I don't think hedgehogs normally go around together in twos. But in this picture I've put them in twos so we can practise our counting. So remember, we're going to count in two ways. We're going to count first one two, two twos three twos, four twos, five twos, six twos, seven twos. There're seven groups of two hedgehogs. So now we can use our counting in multiples of two to find out how many hedgehogs there are altogether. So can you join in with me? Two, four, six, eight, 10, 12, 14. So seven groups of two hedgehogs or 14 hedgehogs altogether. Seven twos are 14. Alright, it's your turn now. I'd like you to go and find some objects from around your house. Do check with your grownup first. Maybe you could go and get some Lego pieces, or some building blocks, maybe some pieces of pasta. Just go and collect some things. Perhaps put them in a little tub or a basket if you can do that and then come back. Did you come back? Great, well done. Well, I've got some things here. Look, I've got some pebbles I collected at the beach last time I went. And I'm going to count these, you watch me and join in with me and then it's your turn to have a go of yours. To make sure I'm doing some really careful counting, I'm going to count them into my lid here. I'm going to put the pebbles down and just count one at a time. One, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14. There we go, I've got 14 pebbles. You were probably thinking, there's a quicker way to do that, isn't there? And now that we're good at counting on our multiples of two, we could have done it like that, couldn't we? I'm going to put them down and have another go. I will count in twos this time. So there were 14. I wonder how many they'll be this time. So we'll find out, if we count in twos. Are you ready? Now, if I count in twos, I need to pick up two at a time, don't I? Otherwise it wouldn't be a group of two, and I couldn't use my counting in twos. I wonder if this is going to be quicker. Should we see? So two, four, six, eight, 10, 12, 14. That was 14 again. Of course there's 14. I didn't put any extra ones in and I didn't take any out. So our counting in twos gives us the same number as if we counted in ones. Do you think it was quicker? I didn't have to pick up as many times, did I? Whenever I picked up two, it got a little bit quicker. Now it's your turn. With your objects, see if you can count in twos. Now it might be that you end up with one leftover. If that happens to you, could you just put it to one side? Because for this lesson, I just want you to be practising counting in twos. So pause the video here, have a go yourself. There's something else you could do to practise your counting in twos. And to check that you got it right, is to use our counting backwards. So we got to 14, didn't we? 14 pebbles. And I'm going to show you that I could take two out at a time, put them away, and then we'll see if we get to zero when there's none left. A bit tricky going backwards. I'd like you to help me. They were 14. 14, 12, 10, eight, six, four, two, zero. They're all gone. So you could practise counting back in twos by taking two of your Lego or whatever it is you've got, out of your box and putting it away. Off you go, go and practise that. So we've got some hedgehogs again here but this time you'll notice they're not tidy in twos and they're not in a straight line. So it's a little bit trickier to count things that aren't organised tidily. What do you think I could do? I've got my picture in front of me. How could I count the hedgehogs? Maybe you're thinking you could touch two at a time. I could do, but then I wouldn't know necessarily which ones I touched. Maybe you're thinking I could draw a ring around two hedgehogs to put them into a group of two. Should we try that together? So we'll count how many hedgehogs we've got. So we can count in twos if we put a ring around two hedgehogs at a time. Are you ready? Two, four, six, eight, 10, 12. There are 12 hedgehogs, well done. You might be wondering how many groups we made. Can you see? Maybe if we draw a line through them we can see how many groups it was for 12 hedgehogs. One two, two twos, three twos, four twos, five twos, six twos. Six twos made 12 hedgehogs. Well done. Now let's see if you can do some toggling around things and putting things in twos. So you can get a piece of paper and what I'd like you to do I'll show you, and then you can go and sort yourself out. So I've got my paper and I'd like you to draw 16 sweets. And you can count them as you draw them. Now they don't need to be really fancy sweets otherwise you'll be here for ages. I think my sweets are just going to look like that. One sweet, two sweets, three sweets, four sweets, five sweets, six sweets. And I'll keep going until I got 16. Can you go and do the same? So did he manage to do that? So let's see if we count our sweets, our 16 sweets, in groups of two. We can have a practise and seals so how many groups of two make 16. So are you ready? So I'm going to put a ring around my two sweets at a time. Try and pick the sweets that are closer together. So that's one two, two twos, three twos, four twos five twos, six twos, seven twos, eight twos. Eight groups of two sweets or 16 sweets all together. Eight twos are 16. So pause the video and you go and check with your sweets. Another way for you to practise your counting in twos is by starting from different numbers. So you could practise counting how many groups maybe put some of your counters down, just look and see how many there are. Like hey, you can just see there's three counters, or three groups of two. And then you can count on from there, first counting how many groups and then we'll count the dots. So I can see three groups of two, four groups of two, five groups of two, six groups of two, seven groups of two. Now let's count forwards through different multiples of two. You don't always have to start on two. So you might know how many dots there are on those three counters. You might know by now that three twos are six. So we can say six to start with for what we can see what will the next multiple have two be after six? Can you think? Do you think it's eight? Six, eight that's it. So join in with me we'll say six to start with for the six dots that we can see and then we'll count on from there. Are you ready? Six, eight, 10, 12 14. So it's 14 dots on seven counters. Seven twos are 14. You can practise counting forwards through different multiples. So start with a number that you know. Already I know that two twos are four. So I'm going to say four and then I'll count on. Four, six, eight, 10, 12, 14. And of course I could also go backwards. 14, 12, 10, eight, six, four, two, zero. So see if you can put some counters down and count forwards and backwards from different multiples of two. Well done everybody for all your hard work in this lesson. There's lots of ways you can practise this at home. Either inside the house or if you're lucky enough to have some outside space, you could do it outside. You could find some collections of objects. You could count them in those groups. One group, two groups, three groups or just one two, two twos, three twos. And of course you can use your multiples of two to find out how many things you've got all together. So there's lots of ways to practise to get really, really confident. Good luck everybody. Now, I look forward to seeing you again soon.

In this lesson, we will carry on practising and learning some new things about counting in twos.

In this lesson, we will carry on practising and learning some new things about counting in twos. Resources provided by NCETM (CC BY-NC-SA: https://creativecommons.org/licenses/by-nc-sa/4.0)

Maths

Y1 Maths

Key Stage 1

Year 1

Lesson overview:Count in twos and count on from a multiple of 2

Core Content

Multiplication and money: