Perimeter www mathsrevision com S 4 Units of

Perimeter www. mathsrevision. com S 4 Units of length Perimeters Area Counting squares Area Rectangle Area of Triangle 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 Q 1. Calculate Q 2. Find two numbers that multiply add to give 18 and subtract to give 3. Q 3. Calculate Q 4. 27 -Oct-20 Find 28. 4 – 5. 9 Created by Mr. Lafferty Maths Dept.

Units of Length www. mathsrevision. com S 4 Learning Intention 1. 27 -Oct-20 Success Criteria To explain the 4 metric units of length and how to convert between them. 1. To know the 4 units of length. 2. Be able to convert between them. Created by Mr. Lafferty Maths Dept.

Units of Length The 4 units of length are : www. mathsrevision. com S 4 The metre : This is the standard unit of length and is approximately the distance from your nose th 100 to the end of your outstretched arm. The centimetre : This is of a metre and is about the width of your pinky nail. The Millimetre : 1000 This is of a centimetre and is about the width of a sewing needle. The Kilometre : 27 -Oct-20 This is of a centimetre and is about the width of a sewing needle. Created by Mr. Lafferty Maths Dept.

Units of Length Converting Measurements www. mathsrevision. com S 4 Kilometres (km) metres (m) centimetres (cm) millimetres (mm) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Units of Length Converting Measurements S 4 www. mathsrevision. com Examples Convert 2 m to cm : 2 x 100 = 200 cm Convert 4 km to m : 4 x 1000 = 4000 m Convert 34 cm to mm : 34 x 10 = 340 mm Convert 50 cm to m : 27 -Oct-20 50 ÷ 100 = 0. 5 m Created by Mr. Lafferty Maths Dept.

Units of Length Converting Measurements www. mathsrevision. com S 4 Now try Exercise 1. 1 Ch 3 (page 38) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 Learning Intention 1. Success Criteria To understand the term perimeter of a shape. 1. To know the term perimeter of a shape. 2. Calculate the perimeter of a shape. 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 What is perimeter ? Hint answer is on the screen ! 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 Perimeter 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 Perimeter 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 Perimeter is the distance round the outside of a 2 D shape 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 6 cm 3 cm Perimeter = 27 -Oct-20 Calculate the perimeter of the rectangle below. 6 + 3 + 6 + 3 = 18 cm Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 3 cm 5 c m 4 cm Perimeter = 3 + 5 + 4 = 12 cm 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Perimeter www. mathsrevision. com S 4 10 cm Calculate the perimeter of the rectangle. Perimeter = 28 cm 27 -Oct-20 Created by Mr. Lafferty Maths Dept. 4 cm

Perimeter www. mathsrevision. com S 4 Calculate the perimeter of the triangle below. 5 cm 27 -Oct-20 Perimeter = 20 cm Created by Mr. Lafferty Maths Dept.

Perimeter S 4 www. mathsrevision. com Problem xm 8 m Below is a draw of the school building. Calculate the perimeter. 4 m 12 m 27 -Oct-20 x = 12 – 9 =3 m 4 m 9 m Perimeter = 12 + 8 + 3 + 4 + 9 + 4 Created by Mr. Lafferty Maths Dept. = 40 m

Perimeter www. mathsrevision. com S 4 Now try Exercise 2 Ch 3 (page 40) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Starter Questions S 4 Q 1. Solve the equation below Q 2. Find the missing angles Q 3. Find the average of the numbers below 2, 5, 6, 7 Q 4. 27 -Oct-20 Find Created by Mr. Lafferty Maths Dept. a o b o

Area Counting Squares www. mathsrevision. com S 4 Learning Intention 1. Success Criteria To explain area in terms of counting squares. 1. To understand the term area. 2. Find the area by counting squares. 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Area Counting Squares S 4 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 1 cm we say it is : 1 cm 27 -Oct-20 1 cm 2 ( 1 square centimetre ) Created by Mr. Lafferty Maths Dept.

Area Counting Squares www. mathsrevision. com S 4 Now try Exercise 3. 1 Ch 3 (page 42) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 Q 1. Calculate Q 2. What is the time difference 09: 28 and 11: 55 Q 3. Q 4. Convert 23 metres to (a) cm (b) mm Q 5. The answer to the question is 180. What is the question. 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Area of a Rectangle www. mathsrevision. com S 4 Learning Intention 1. Success Criteria To come up with a formula for the area of a rectangle. 2. Use the formula to solve problems. 27 -Oct-20 1. To be able to state area formula for a rectangle. 2. Apply formula correctly. (showing working) 3. Answer containing appropriate units Created by Mr. Lafferty Maths Dept.

Area of a Rectangle S 4 www. mathsrevision. com 1 cm B B L L L = length L B = Breadth L 27 -Oct-20 B Area = length x breadth A= L x B 3 X 1 = 3 4 X 3 = 12 3 X 2 Created = by 6 Mr. Lafferty Maths Dept. Must learn formula !

Area of a Rectangle S 4 www. mathsrevision. com Example Find the area of the rectangle opposite B = 2 cm L = 9 cm Area = Length x Breadth A=Lx. B A=9 x 2 A = 18 cm 2 SC 1 SC 2 SC 3 27 -Oct-20 Success Criteria Created by Mr. Lafferty Maths Dept.

Area of a Rectangle S 4 www. mathsrevision. com Example Find the length L of the rectangle opposite B = 3 cm A = 36 cm L Area = Length x Breadth A=Lx. B 36 = 12 x B Change side Change sign Remember units 27 -Oct-20 Created by Mr. Lafferty Maths Dept. 2

Area of a Rectangle www. mathsrevision. com S 4 Now try Ex 5. 1 & 5. 2 Ch 3 (page 45) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Starter Questions www. mathsrevision. com S 4 Q 1. Calculate Q 2. What is the perimeter and area of the rectangle. 13 cm Q 3. 10 cm Q 4. Convert 57 metres to (a) cm (b) mm Q 5. The answer to the question is 90. What is the question. 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle www. mathsrevision. com S 4 Learning Intention Success Criteria 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. 1. Know area of a right-angled triangle formula 2. Use formula to work out area of triangle. 3. Show all working and units. 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle S 4 www. mathsrevision. com Calculate the area of this shape A=lxb A = 10 x 8 8 cm 27 -Oct-20 A = 80 cm 2 10 cm Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle www. mathsrevision. com S 4 Vertical Height 27 -Oct-20 base Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle S 4 www. mathsrevision. com Calculate the area of this shape 12 cm 27 -Oct-20 6 cm Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle S 4 www. mathsrevision. com Calculate the area of this shape 3 cm 4 cm 27 -Oct-20 Created by Mr. Lafferty Maths Dept.

Area of A Right-Angled Triangle www. mathsrevision. com S 4 Now try Ex 6 Ch 3 (page 48) 27 -Oct-20 Created by Mr. Lafferty Maths Dept.