GCSE Bearings revision- Foundation/Higher

There are three important rules to remember when faced with a bearing problem:

1. Always start from north 
2. Always turn clockwise 
3. Write as 3-digits. e.g 035

Bearing problems are often worded: Find the bearing of B from A. This means you need to put your protractor on A and then measure the bearing to B, with zero facing north, going clockwise around your protractor and writing as three digits. 

Here is a video from corbett maths and some practise questions to have a go at.

Exam Questions: 

Questions

Answers 

Worded GCSE questions Foundation

Many of the year 11's have been asking for help on solving and answering worded problems in exams. It is really important to start by reading the question carefully and underline and information. 

I have found a brilliant video and set of exam questions from  GCSE Maths Takeaway site

Here is the video:

Exam question are on the site above number 81.

Angle Bisectors and Perpendicular Bisectors

Not sure about how to construct a bisector? Or not sure which one is which? Have a look at these two videos which show you the step-by-step instructions.

Angle Bisectors:

Perpendicular Bisectors:

Got the hang of it? Draw a few lines and angles and get some practice in! You'll need a pencil, ruler and compass for this - make sure you have them.

Rearranging Formulae- Higher and Foundation

Today my year 11 higher classes and C MTG have been revising Rearranging Formulae. Remember to take each step carefully.

Corbett maths exam questions can be found here: 

Corbett exam questions Higher 
Corbett maths exam questions Foundation

Using the Quadratic Formula

Whenever you're faced with a quadratic equation you have choice:

• Plot it and find the intercepts
• Factorise and solve (x+...)(x+...) etc. Each bracket =0 etc
• Complete the square and rearrange (see these older posts)
• Use the quadratic formula:

(More can be seen about the quadratic formula in this post)

You will have your own order of preference for the above methods, but one thing you can be certain of is that if there are real solutions, the formula will find them (factorising may not!).

Mean from a Frequency Table and Grouped Data

Calculating the mean from a frequency table appears on both foundation and higher GCSE papers. Here are a couple of questions to have a go at and a video to help. 

Calculate the mean