1. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Units of length Perimeters Perimeter Perimeter www.mathsrevision.com Area Counting squares Area Rectangle Area of Triangle

2. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions Q1.Does 5m = 500cm Q2.Find two numbers that multiply to give 18 and subtract to give 3. Q3.Write 583 000 in words. Q4.True or false www.mathsrevision.com

3. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 1.To know the 4 units of length. 1. To explain the 4 metric units of length and how to convert between them. 2. Be able to convert between them. Units of Length

4. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Units of Length The 4 units of length are : The metre : This is the standard unit of length and is approximately the distance from your nose to the end of your outstretched arm. This is of a metre and is about the width of your pinky nail. 100 th The centimetre : This is of a centimetre and is aboutthe width of a sewing needle. The millimetre : This is metres and is about the the length of 10 football pitches. The kilometre : 1000

5. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Units of Length Converting Measurements Units of Length Converting Measurements www.mathsrevision.com kilometres (km) metres (m) centimetres (cm) millimetres (mm)

6. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Units of Length Converting Measurements Units of Length Converting Measurements www.mathsrevision.com Examples Convert 2m to cm : 2 x 100 = 200 cm Convert 4km to m : 4 x 1000 = 4000 m Convert 34cm to mm : 34 x 10 = 340 mm Convert 50cm to m : 50 ÷ 100 = 0.5 m

7. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Now try Exercise Ch (page ) www.mathsrevision.com Units of Length Converting Measurements Units of Length Converting Measurements

8. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions www.mathsrevision.com

9. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 1.To know the term perimeter of a shape. 1. To understand the term perimeter of a shape. 2. Calculate the perimeter of a shape. Perimeter

10. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter www.mathsrevision.com What is perimeter ? Hint answer is on the screen !

11. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter Perimeter www.mathsrevision.com

12. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter Perimeter www.mathsrevision.com

13. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter is the distance round the outside of a 2D shape Perimeter www.mathsrevision.com

14. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 6cm Calculate the perimeter of the rectangle below. 3cm Perimeter = 6 +3 +6 +3 = 18cm Perimeter www.mathsrevision.com

15. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 4cm 3cm 5cm Perimeter = 3 + 5 +4 =12cm Perimeter www.mathsrevision.com

16. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Calculate the perimeter of the rectangle. 10cm 4cm Perimeter =28cm Perimeter www.mathsrevision.com

17. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Calculate the perimeter of the triangle below. 13cm 5cm 12cm Perimeter = 30cm Perimeter www.mathsrevision.com

18. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Below is a drawing of the school building. Calculate the perimeter. Perimeter www.mathsrevision.com Problem 4 m 9 m 8 m x m 12 m 4 m x = 12 – 9 =3 m Perimeter = 12 + 8 + 3 + 4 + 9 + 4 = 40 m

19. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Now try Exercise Ch (page ) www.mathsrevision.com Perimeter

20. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions www.mathsrevision.com

21. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area Counting Squares www.mathsrevision.com Learning Intention Success Criteria 1.To understand the term area. 1. To explain area in terms of counting squares. 2.Find the area by counting squares.

22. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area Counting Squares www.mathsrevision.com The area of a shape is simply defined by : “the amount of space a shape takes up.” Think of a square measuring 1 cm by 1cm we say it is : 1cm 1cm 2 ( 1 square centimetre )

23. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Now try Exercise Ch (page ) www.mathsrevision.com Area Counting Squares

24. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions www.mathsrevision.com Q3.Convert 23metres to (a) cm (b)mm Q2. Q1.What is the time difference 09:28 and 11:55

25. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle www.mathsrevision.com Learning Intention Success Criteria 1.To be able to state area formula for a rectangle. 1. To come up with a formula for the area of a rectangle. 2.Use the formula to solve problems. 2.Apply formula correctly. (showing working) (showing working) 3.Answer containing appropriate units appropriate units

26. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle www.mathsrevision.com 31 3 43 2 3 6 12 X = X = X= LAB L L L B B B L = length B = Breadth Must learn formula ! 1 cm Area = length x breadth A = L x B

27. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle www.mathsrevision.com Example Find the area of the rectangle opposite L = 9cm B = 2cm Area = Length x Breadth A = L x B A = 9 x 2 A = 18 cm 2

28. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Area of a Rectangle Now try Exercise Ch (page )

29. Level D Q1.True or false 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions www.mathsrevision.com Q3.Convert 57 metres to (a) cm (b)mm Q2.True or false the perimeter of the shape is 130cm 13cm 10cm

30. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 1.Know area of a right-angled triangle formula Use the area of a rectangle formula to help us to come up with a formula to calculate the area of any right-angled triangle. 1. Use the area of a rectangle formula to help us to come up with a formula to calculate the area of any right-angled triangle. 2.Use formula to work out area of triangle. 3.Show all working and units. Area of A Right-Angled Triangle

31. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Calculate the area of this shape 8cm A = L x b A = 10 x 8 A = 80cm 2 10cm www.mathsrevision.com Area of A Right-Angled Triangle

32. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Base Length www.mathsrevision.com Area of A Right-Angled Triangle

33. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Calculate the area of this shape 12cm 6cm www.mathsrevision.com Area of A Right-Angled Triangle

34. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Calculate the area of this shape 3cm 4cm Area of A Right-Angled Triangle www.mathsrevision.com

35. Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of A Right-Angled Triangle Now try Exercise Ch (page ) www.mathsrevision.com