Maths Presentation

1. Maths Presentation Key Stage 1 S.Moloney Autumn 2010

2. Aims To explain how Maths is taught in KS1 To describe the methods used for +, -, x, ÷ To increase parents’ confidence in supporting their children

3. Introduction • Emphasis on practical work • Understanding of number • Mental Maths

4. Addition 1: Adding 2 single-digit numbers • Combining 2 sets of objects • Addition can be done in any order

5. Addition: Adding 2 single digit numbers • Count on from larger number, using fingers to keep track

6. Addition: Adding 2 single-digit numbers • Use jumps on a number line

7. Addition 2: Adding a single digit number to a 2-digit number Using addition facts to 10 Using addition facts to 10 Children will progress to the stage where they are able to work out sums where the units cross the tens boundary E.g. 25 + 6 5 + 6 = 11 20 + 11 = 31 E.g. 23 + 4 3 + 4 = 7 20 + 7 = 27

8. Addition 3: Adding two 2-digit numbers Place Value How much is each digit worth? e.g. 65 = 60 + 5

9. Adding two 2-digit numbers Partition into Tens and Units, then recombine e.g. 23 + 31 20 3 30 1 20 + 30 = 50 3 + 1 = 4 50 + 4 = 54

10. Key Maths Facts Number bonds to 10 e.g. 7 + 3 = 10 Number bonds to 100 e.g. 70 + 30 = 100 Adding 10/multiples of 10 to any number Fast doubles of numbers e.g. 5 + 5 =10 5 + 6 = double 5 + 1 = 10 + 1 = 11

11. Activity Ideas Bingo Skittle games Use the world around you: On a typical journey to school: Can you partition that door number? I can see 5 cars in front of us and 3 behind – how many altogether?

12. Subtraction 1: Taking away a single digit number Understand subtraction as taking objects away from a set Put down 1 finger for every 1 you take away Jump backwards on a number line from the larger number

13. Subtraction 2: 2-digit – single digit Find the difference by counting up from the smallest number to the largest number

14. Subtraction 3: 2-digit – 2-digit • Mental with jottings • Independently drawn number line to record jumps backwards • Jumps of 10/multiples of 10 • E.g. 56 – 23 56 – 20 = 36 36 – 3 = 33

15. Multiplication 1 • Repeated addition • E.g. 3 x 5 = 5 + 5 + 5 • The ‘x’ signs means ‘groups of’ so… • 3 x 5 means ‘3 groups of 5’ • We encourage children to physically make/ draw the groups

16. Multiplication 2 • Children begin by learning the 2, 5 and 10 x tables. • Look for patterns in the numbers • It is important that children learn the tables out of sequence • Progress to 4x (double 2x), 6x (double 3)

17. Activities • Buzz (count forwards in ones, every time you reach a number in the 5 x tables, say ‘buzz’ instead) • Fizz Buzz • Multiplication bingo • Quick-fire qns based on fast recall of x facts

18. Division 1 • Shared equally • How many groups of? • E.g. 6 ÷ 2 • If I shared 6 sweets equally between 2 people, how many would each one get? • How many groups of 2 are there in 6?

19. Division 2 • Children will progress to quickly solving division sums by using their recall of x facts • E.g. 2 x 3 = 6 • So, 6 ÷ 3 = 2 • Division sums with remainders E.g. 21 ÷ 5 = 4r1