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

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 in words. Q4.True or false

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Units of Length Converting Measurements Units of Length Converting Measurements 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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter Perimeter

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Perimeter Perimeter

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

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

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

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

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

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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Starter Questions

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area Counting Squares 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.

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area Counting Squares 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 )

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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle 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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle 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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. Area of a Rectangle 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

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

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

Level D 24-Dec-15Created by Mr. Lafferty Maths Dept. 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

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 Area of A Right-Angled Triangle

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

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

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

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