﻿Hi, everyone? How are you? I'm Miss Mitchell. And today in Math we're going to be using non-standard and standard units when measuring. In today's lesson, we'll have an input about length. You will then complete a talk task, a worksheet, and then a quiz. For today's lesson, you will need objects of different size. For example, a pen, a book, some pasta, a piece of paper, for example. But please, please remember to make sure you ask your parent or carer for these items before touching them. You will also need a one P coin, so a penny coin. You'll also need some pens, a pencil and some paper. Pause the video now to get this if you have not got it already. I hope you found your items around your house with your parent and carer's permission. I found some items too. I'm going to be using a pen, a candle, a peg, and some herbs. Now I need to measure the length of these items. But I don't have a ruler. I only have a penny. How can I use this penny to measure the length of these items? Well, what I'm going to do, I'm going to start with my herbs. And I'm going to use this penny to count. Well, I'm going to do it really carefully. So you start with your penny at the bottom. One penny, two penny, three penny, it is four, four and a little bit Pennies. So these herbs are four and a bit pennies long. Let's do it with something else. Let's do it with the peg. So, it's a little bumpy, so I'll just try my best. So, I start at the bottom. One penny, two penny. So I'm moving my thumb. Three penny. This is three and a bit pennies long. It's not quite four. So it's three and a bit pennies long. So if my herbs were four and a bit pennies long, and my peg was three and a bit pennies long, which is greater? Which is longer? That's right, the herbs is greater in length than the peg. The peg is less than the herbs in length. Let's try one more time. Let's try with the pen. So really watch carefully how I measure this with my penny. I have, I think, is this the most accurate way I can measure? So I put my pen at the bottom. So my pen is one penny, two pennies, three pennies, four pennies, five pennies, six pennies, and not quite seven. So it's six pennies, not quite seven. So it's six and a bit pennies. So, if this was six and a bit pennies, and this was four and a bit pennies, which is greater? That's right, my pen is greater in length because it has more pennies than the herbs. And we can also see that when we put it next to each other. It's your go now to do the talk task. So could you please measure your items with the penny? How did you get on with your talk task? It was quite tricky measuring with the penny wasn't it? So, the other day, I went to the tailors because I wanted a new pair of mittens. And when I got there, they measured my hand using cubes. And they wrote down my measurements. So, they said that my hand was 12 cubes long, and my thumb was five cubes long. Mr. Malik, he was making my gloves for me, read the measurements, and he made, he made a mitten for me. But I was so upset. When I went to try on my knew mittens, they were too big. Why do you they were too big? They measured my hand using cubes. Why did it not work? Could you pause the video now and have a think as to why it didn't work? So what reasons did you think of? Why do you think my mittens didn't fit me? We measured them with cubes. Maybe everyone use different size cubes. That means it wasn't very accurate. What could have made it more accurate? What could I, What could I have used, or what could Mr. Malik have used instead rather than cubes? I could have used a ruler. And why is a ruler more accurate than cubes? That's right, because every ruler is the same. So if everyone's using the same tool and the same measurement, you know, it's going to be a lot more more accurate. Okay, so I need now, need to measure the height of my door. Can I use this penny like we did with the other objects over there? Can I use this penny to measure the height of this whole door, which is bigger than me? And I'm quite tall. Could I use this penny? No, why not? That's right, the penny is too small, and it would take absolutely ages to measure that height of the door. That's because the door is bigger than a metre. Can you say, one metre? One metre. Now this is a metre stick. So you can see how big a metre is. Now the door, if I start from the bottom, the door is definitely bigger than one metre. It's probably at least, two to three metres high. Okay? so this is one metre, this is one metre against me. And again, I'm fairly tall. So this is what a metre looks like. So we can't use a penny to measure the door because it's greater than a metre. For your independent task, I would like you to look around your home and find things that are shorter than one metre. Things that are about a metre. So near about a metre, and things that are longer than one metre. Remember to ask your parent or carer before you touch anything. Just to check. Okay? So, pause the video now to look around your home to find things that are shorter than a metre, about a metre, and longer than a metre. Now here are examples of my answers. Remember, you're going to have different things in your home. So your answers will be different to my answers. But if you have a parent or carer, if you can, ask them to check your answers, just to see if you're on the right tracks. You've worked really, really well today. If you'd like to share your work with Oak National, please ask your parent or carer to share your work on Twitter. Tagging @OakNational and #LearnwithOak. Now you've worked really hard, but let's see what you can remember by completing the quiz on the next page. Well done for today. Bye.

Estimate whether these objects are greater than a metre or less than a metre.

Measuring up to the ceiling

Your hand

A rubber

The height of your school building

Your finger nail

Using standard and non-standard units when measuring

In this lesson, we will measure items with non standard units and estimate length.

Maths

Y2 Maths

Key Stage 1

Year 2

Measures: Length

Number

THEME

UNIT

Estimating and comparing length

Estimating length in centimetres

Measuring length in centimetres

Estimating, measuring and comparing length in centimetres

Investigating the length of certain body parts

Measuring curved and straight lines

Drawing lines with specified lengths

Applying knowledge of length when solving a word problem

Consolidating and reviewing length

Which is correct?

I would like to draw another line that is seven centimetres longer than 11cm. How long will my line be?

Can you compare the two objects?

Estimate the length of a mobile phone.

How do you measure a curved line accurately?

The question said 'Measure the longest side'. What have they done wrong?

Stuart walked 36 m from his house to the shop. Lisa walked 23 m from her house to the shop. How much further did Stuart walk than Lisa?

Lesson overview:Using standard and non-standard units when measuring

Core Content

Measures: Length: