Westwood Farm Infant SchoolWestwood Farm Infant SchoolParents Maths WorkshopParents Maths Workshop

Westwood Farm Infant SchoolWestwood Farm Infant SchoolParents Maths WorkshopParents Maths Workshop

Supporting your child at home Supporting your child at home with their mathswith their maths

Wednesday 27Wednesday 27thth March 2013 @ 7.30pm March 2013 @ 7.30pm

Maths............

What do you want to know?

What do you find hard to support

at home?

Let’s make a list!....

Maths is like…

Train-spotting… you jot down a whole load of numbers

for no apparent reason

‘Marmite’…you either love it or hate it depending on how it was

served up to you as a child

Aims of session

• To consider briefly how maths is taught today.

• To consider the progression of addition and subtraction methods

• To try and answer any questions or concerns.

Your feedback…

What you suggested… What is happening…

Show parents how maths is taught today.

Today! Workshop focused on methods.

Ideas for parents to use at home.

Maths booklets added to the school website.

Useful websites for children to use at home.

List of websites included in your information to take home.

Key differences today

• Interactive teaching• Emphasis on mental calculation• Different approach to written

calculation• Maths through problem solving• Maths is fun!

The aim..........The aim is for children to do mathematics in their heads, and if the numbers are too large, to use pencil and paper to avoid losing track.

To do this children need to learn quick and efficient methods, including appropriate written and mental methods.

Mental Maths?

How and why do we teach

mental maths skills?

• Counting on 1 more/less

• Number bonds to 10

• Adding on 10 more

• Counting in 2’s, 5’s & 10’s

We want children to ask themselves:

Can I do this in my head?

Can I do this in my head using drawings or jottings?

Finally – is my answer sensible?

Using practical equipment......

• Number lines

• 100 squares

• Numicon

• cubes

Addition

2 + 3 =

At a party, I eat 2 cakes and my friend eats 3. How many cakes did we eat altogether?

Children could draw a picture to help them work out the answer.

8 + 4 =

8 people are on the bus. 4 more get on. How many people are on the bus now?Children could draw dots or lines, which is quicker than drawing a picture.

or I I I I I I I I I I I I

5 + 2 =2 + 5 = 7 – 2 =7 – 5 =

Instead: 5, 2, 7 What sums can you

make with these numbers?

Investigations

Which two numbers could have a total of 15?

Link to money, measure, etc.

Choose 3 different coins that make 20p or less. What different amounts can you make?

45 + 36 = There are 45 boys in a school and 36 girls. How many altogether?

Children should partition (split) each number into tens and units.

45 + 36

40 5 30 6

40 + 30 = 70

5 + 6 = 1170 + 11 = 81

76 + 47 =

76

Number line

11676

+ 40

123

+ 7

86

+10

96

+10

106

+10

116

+10

123

+7

358 + 473 =

Expanded column addition

358

+ 473

11120700

831

Subtraction

Children are taught to understand subtraction as taking away (counting back) and finding the difference (counting up).

5 - 2 =

I had five balloons. Two burst. How many did I have left?

Children could draw a picture to help them work out the answer.

5 - 2 =

A teddy bear costs £5 and a doll costs £2. How much more does the bear cost?Children could draw a picture to help them find the difference.

8 - 3 =

Mum baked 8 biscuits. I ate 3. How many were left?

Children could draw dots or lines, which is quicker than drawing a picture.

(find the difference)

or I I I I I I I I (take away)

Number line – count back

Imran has 13 conkers; he gives 4 away to his friends. How many does he have left?

13 – 4 =

1312119 10

9 conkers

- 1- 1- 1 - 1

Number line – count on

Imran has 43 conkers; he gives 24 away to his friends. How many does he have left?

43 - 24 =

24 30

+6

43

+3

40

+10

19p more

54 - 38

30 8

54 - 30 = 24 24 - 8 = 16

54 - 38 = There are 54 children in a school and 38 are poorly. How many are left at school?

Children should partition (split) each number into tens and units.

Expanded Column Subtraction

74 – 23 = ?

70 4

- 20 3

50 1 = 51

663 – 378 = ?

600 60 3

- 300 70 8

1350500150

580200 = 285

Problem Solving at home..........(Year 2)

After you have been shopping, choose 6 items each costing less than £1. Make a price label for each one, e.g. 39p, 78p, 99p, 15p. Shuffle the labels. Then ask your child to do one or more of these:

• Place the labels in order, starting with the lowest• Say which numbers are odd or even numbers• Add 9p to each price in their head• Take 20p away from each price in their head• Say which coins to use to pay exactly for each item• Choose any 2 of the items and find their total cost• Work out the change from £1 for each item

Problem Solving at home..........(Year 1)

You need a dice, pencil and piece of paper.....

• Draw 4 circles on your piece of paper. Write a different number between 2 and 12 in each circle.

• Roll the dice twice. Add the two numbers.• If the total is one of your 4 numbers in circles then you may

cross it out.• The first person to cross out all 4 circles wins.

2 6 9 8

Any questions?