Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty1 Starter Questions S3 Q3.Calculate Q1.Factorise.

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Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty1 Starter Questions S3 Q3.Calculate Q1.Factorise Q2. Make h the subject of the equation. Q4. The value of the standard deviation for petrol prices in Glasgow is 2.1 and 1.9 for Edinburgh. Comparing the two values write down a valid statement.

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty2 Sector area of a circle S3 Aim of Today’s Lesson To find and be able to use the formula for calculating the sector of an circle.

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty3 S3 Q. What is an sector area ? Sector area of a circle A B Answer Sector area is a fraction of the area of the whole circle. minor sector major sector

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty4 Sector area of a circle S3 Q. Find the area of the circle ?Solution 10cm

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty5 S3 Q. Find the sector area for the semi-circle ? Solution Sector area of a circle 180 o 10cm

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty6 S3 Q. Given part of the circle below. Find the sector area ? Solution Sector area of a circle

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty7 S3 Sector area of a circle 3 step process to calculating sector area of a circle. Step 1 Find the area of the circle. Step 2 Find fraction of the whole circle. Step 3 Find the sector area.

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty8 S3 Solution 6cm Sector area of a circle 45 o Q. Part of a circle is given below. Find the sector area. Fraction of circle

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty9 S3 Sector area of a circle 3 step process for calculating the sector area. Step 1 Find the area of the circle. Step 2 Find fraction of the whole circle. Step 3 Find the sector area.

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty10 S3 Q. Find the area of the sector below ? Sector area of a circle Solution

Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Monday, 19 October 2015Created by Mr Lafferty11 S3 Sector area of a circle Now it’s your turn ! Begin Maths in Action Book page 196

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