﻿Hello, everyone. I hope you're well and been having a great day. Do you know, recently I've really enjoyed sharing with you all of the snacks that I've been having. Do you want to have a look at what I've got today? Let's take a look together. Oh dear, my snack's disappeared. I wonder where it's gone. I think I've got an idea about who's taken it. It's Reggie. Can you say hello, Reggie? Reggie says hello, everyone. Reggie, do you mind returning my snack, please, so I can show everyone what I've been having? Reggie's going to put it back. Let's take a look. There we are. I've got some grapes here. Can you see them? Let's see if we can count how many I've got together. One, two, three, four, five, six grapes. Hm, I'm sure I had some more grapes. I'm sure I had more grapes than what I've got there on the table. Oh, here comes Reggie. What's he doing? Oh, I think Reggie's put down one more grape. Shall we see how many grapes I've got now? Let's count them together. One, two, three, four, five, six, seven. One more than six is seven. Hm, I'm sure I still had more grapes than that. Oh, here's Reggie. What's he doing again? Oh, I think Reggie's just added another grape. Let's see how many grapes I've got now. One, two, three, four, five, six, seven, eight. One more than seven is eight. Can you say that? Great job, everybody, well done. I hope you're ready for today's learning. Oh, I think Reggie was just doing something. What was he up to? Do you know? Shout it out to the screen if you do. Oh, I can hear some of you saying he was taking a look at my grapes. Let's see how many grapes I've got. I hope I've still got eight. One two, three, four, five, six, seven. Do you know what happened to my grapes? Reggie took one? Oh dear. One less than eight is seven. Can you say that? Well done, everybody, great job. Well, I'll leave it there, and hopefully I'll be able to eat my grapes a little bit later. So for today, we are learning to explore subtraction using partitioning. Here's what you're going to need. You are going to need 10 small objects for counting. Press pause now to go and get those things, and I'll see you in a bit when you're ready. Welcome back, everyone. Now that you've got your 10 objects, you're ready for today's learning. Let's have a look and see if we can read out our star words. I'm going to say them and you can read them after me. Are you ready? Here we are. Subtract, is equal to, part, whole, and minus. Those are all star words for today. Now let's take a look at our new learning. So here we are. We've got a bus here, and we've got some people on the bus. And the bus has just arrived at the bus stop. Let's see how many people there on the bus. I wonder if you can help me count them. One, two, three, four, five, six, seven, eight, nine. There are nine people on the bus. Can you say that? Great job, everyone. Now four people want to get off of the bus 'cause they've arrived at their stop. So four people are going to leave. Let's help them. One, two, three, four. Four people have left the bus. How many people are left on the bus now? Take a look. Count them, and then shout your answer out to this screen when you're ready. Have you found the answer? Great, let's count them together. One, two, three, four, five. There are five people left on the bus. We can use our part whole model to help us write that out. Let's take a look. So first there were nine people on the bus, then four people got off the bus, and then there were five people left on the bus. Nine minus four equals five. Our whole number is nine and four and five are our parts. Nine minus four equals five. Well done, everyone. Now let's take a look at our bus stop. So there are the people on the bus and here are the four people that got off the bus. Our bus is now going to take another bit of its journey. Let's take a look at where it stops next. So here we are. We're at the next bus stop now, and there were five people on the bus. Three people are going to get on the bus. How many people will be on the bus once three people join? Add that on in your head and shout out the answer when you're ready. I can hear a lot of you shouting out the answer. Did you use your fingers to help? Let's see if we can add on the people. So we've got five on the bus already. We're going to add on three. One, two, three. There are now eight people on the bus. They're going to continue their journey to the next bus stop. Wonder where they're going. Shall we find out? Here we are. They've arrived at their next bus stop. And now six people are going to leave the bus. Six people are going to get off the bus at the bus stop. How many people will be left on the bus? Do you think you can work that out? Shout your answer out when you're ready. I can hear a lot of you working out the answer. Let's see how many people there are when six people leave the bus. Do you want to help me count them off? One, two, three, four, five, six. Six people got off the bus. How many people are left? Shout your answer out to the screen once you know. Great, I can hear a lot of you shouting out the answer. So first there were eight people on the bus. Six people got off the bus. And now there are? Two people on the bus. One, two. We can work that out using our part whole model. Let me show you how. Here we are, here is our part whole model. So first there were eight people on the bus. And then six people got off the bus. And then now there are two people left on the bus. Eight minus six equals two. Six and two are our parts. And eight is our whole number. Well done, everyone. You've helped me work out some subtraction there. You've done a great job. Give yourselves a pat on the back. Let's take a look at the bus again. There are two people on the bus. I wonder if you can make up your own subtraction story, 'cause that's what we've been doing. Let me see if I can tell you it as a story. So first, I'll add them back. There we are. So first there are eight people on the bus going on their journey. Six people wanted to get off of the bus to continue their journey elsewhere. And then there were two people left. So first there were eight people on the bus. Six people left. Three, four five, six. Maybe they're going shopping. And two people were left on the bus to continue their journey. I wonder if you can make up some subtraction stories using your objects for counting. Pretend maybe that they're some people. Where are they going? Will they get off the bus at the first bus stop, or the next bus stop? See if you can make up some subtraction stories yourself. Well done for today, and keep learning. And I'll see you again next time.

In this lesson, we will start learning about subtraction.  We will look at the part-whole model and think about subtraction as partitioning, taking away a part of the whole and finding out how many are left.

Maths

R Maths

Early Years Foundation Stage

Reception

Exploring subtraction as partitioning

Addition and subtraction within 20

Number

THEME

UNIT

Combining 2 quantities to find the totals

Exploring addition by adding on

Exploring subtraction as takeaway

Comparing 2 sets of objects using 'more' or 'fewer'

Investigating quantities using more or fewer

Exploring the concept of doubles

Finding half of numbers to 20

Estimating and counting

Reviewing addition and subtraction

Lesson overview:Exploring subtraction as partitioning

Core Content

Addition and subtraction within 20: