Transcript Parents Numeracy Workshop
Westwood Farm Infant School Parents Maths Workshop Supporting your child at home with their maths Wednesday 27 th 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…
Show parents how maths is taught today.
Ideas for parents to use at home. Useful websites for children to use at home.
What is happening…
Today! Workshop focused on methods.
Maths booklets added to the school website. 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?
• Counting on 1 more/less
How and why do we teach mental maths skills?
• 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 = 11 70 + 11 = 81
Number line
76 + 47 =
+10 +10 76 86 + 40 96 +10 106 +10 +7 116 + 7 123 76 116 123
Expanded column addition
358 + 473 =
358 + 473 11 120 700 831
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)
9 Number line – count back Imran has 13 conkers; he gives 4 away to his friends. How many does he have left?
13 – 4 = - 1 - 1 - 1 - 1 10 11 12 9 conkers 13
Number line – count on Imran has 43 conkers; he gives 24 away to his friends. How many does he have left?
43 - 24 = +10 +6 +3 24 30 40 43 19p more
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.
54 - 38 30 8 54 - 30 = 24 24 - 8 = 16
Expanded Column Subtraction 74 – 23 = ?
70 4 - 20 3 50 1 = 51 663 – 378 = ?
500 150 50 13 600 60 3 - 300 70 8 200 80 5 = 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.
2 6 9 8 • 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.