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Week 3 - 27.04.20

Halving 

 

Please send us some pictures of any of the maths work that you complete this week  smiley

Monday: 

Today we are going to be looking at halving shapes. Do you remember what halving means? How can we best explain what it means to find half of a shape or half of an amount? When you find half of something, how many pieces are there? Are they the same size or are they different sizes? Use one of the sentence stems below to tell your grown up what it means to find half of something. 

 

"A half is..." 

"To find half of something you..." 

 

Well done! Halving is when you split/divide something into two equal parts. A trick that I use to help me to remember this is to pretend that I am sharing something between my two friends and I wouldn't want one of my friends to be sad if the other got more than them e.g. sweets or chocolate, as that wouldn't be fair. Therefore, it is important to remember that when you are halving, it must always be equal (the same). 

 

Look at the shapes below. Which shapes are split in half and which shapes are not? 

 

Challenge - Draw some of your own shapes and shade in half using your pencil or colouring pencils. Try to be as accurate as you can with your drawings!

Which of these shapes are split in half?

Which of these shapes are split in half?  1
Which of these shapes are split in half?  2
Which of these shapes are split in half?  3
Which of these shapes are split in half?  4
Which of these shapes are split in half?  5
Which of these shapes are split in half?  6
Which of these shapes are split in half?  7
Which of these shapes are split in half?  8

Tuesday: 

Have a go at applying your understanding of halving using the 'Half or Not Half' game that is linked below. How many questions can you get right before the timer runs out? Can you challenge yourself to beat your record? 

Try to be creative with halving this week! You could: 

  • Make a sandwich and talk about where you would need to cut it for it to be cut in half
  • Break a chocolate bar in half so that you can share it with your grown up or brother/sister
  • If you are doing some baking, you could count out some chocolate chips and then share them equally between two cakes. 
  • Make a drink of squash and see if you can fill half of the cup.

Wednesday: 

Today we are moving on from halving shapes and we are going to explore finding half of an amount/number. Can you remember what you need to draw to help you to find half of an amount? Use the sentence stems below to help you to tell your grown up how you can find half of an amount/number. 

 

"To find half of an amount you can draw..." 

"Drawing a ..... can help you to find half of an amount." 

 

Well done! To find half of an amount/number you can draw a circle with a line down the middle (a circle that has been divided in half). You can then share/divide the amount of objects you have by placing one of the items into one side and then one item into the other side (repeat this until there are no more items left to share). Remember to check that you have the same amount on BOTH sides, otherwise the number CANNOT be halved. Also, to find half you only need to count the amount of objects that are in ONE side/half of the circle.

 

The video below might help to remind you of this method.

Miss Fountain shows you how to halve using practical resources...

Still image for this video

For your activity today, you will need to get a piece of paper and draw a large circle with a line through the middle (alternatively you could use a hula hoop). Then you will need to collect a variety of resources to see if you can halve the amounts that are listed below. You will need: 

 

  • 2 items that are the same/similar e.g. 2 socks 
  • 4 items that are the same e.g. 4 hairbands 
  • 6 items that are the same e.g. 6 toy cars
  • 8 items that are the same e.g. 8 crisps. 

 

Have a go at halving each of these amounts by using the method that has been explained above. Can you halve all of these amounts or is it impossible to halve some of these numbers? Use the sentence stems below to tell your grown up...

 

"Half of 2 is ...." 

"Half of 4 is ...." 

"Half of 6 is ...."

"Half of 8 is ...." 

"You can/cannot halve these numbers because...." 

 

Thursday: 

Today we are going to continue with our learning from yesterday, but instead of solving the problems using practical resources, we will be using our drawings to help us. Again, you will need to use a circle with a line through the middle to help you to solve the problems and the exact same method that you used yesterday will still apply. 

The video below might help to make this clearer. 

Miss Fountain shows you how to halve using drawings (pictorial representations)...

Still image for this video

Can you find half of these amounts?

Can you find half of these amounts?  1
Can you find half of these amounts?  2
Can you find half of these amounts?  3
Can you find half of these amounts?  4
Can you find half of these amounts?  5
Can you find half of these amounts?  6
Can you find half of these amounts?  7
Can you find half of these amounts?  8

Friday: 

Practise your halving skills using the 'Hit the Button' game. How many numbers can you halve before the timer runs out? Can you challenge yourself to beat your record? 

If you need to use resources/draw to help you to find the answers then please do so. 

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