Friday, 18 December 2009
You need to be familiar with how to find a side and how to find an angle using the cosine rule
1. When all three sides of a triangle are known or can be calculated. In this situation, the Cosine Rule can be used to find any and all of the three angles
2. When two sides are known, and the included angle is either known or can be calculated (e.g. using the other two angles). In such a situation, the length of the third side can be calculated, and so can the other angles.
3. If two sides and an angle besides the included angle is known, the Cosine Rule can still be used, but the Sine Rule is easier to use.
Thursday, 17 December 2009
Histograms are a favourite GCSE topic, you need to know
- what grouped data is
- how to calculate the frequency density
The frequency on a Histogram is shown by the area in the box (frequency density x class width)
The class width is often unequal
Histograms are most often used with grouped data
In the diagram below
Wednesday, 16 December 2009
Skills needed to answer GCSE questions
Helpful resources, examples and links
BBC Bitesize is always good
GCSE Maths tutor - technical but some worksheets and videos
|Some people fing watching a YouTube video can help, but be aware that they use real Maths teachers|
|MyMaths Surds1 goes through the topics in a gentle way.|
|Surds2 - a little harder|
Monday, 14 December 2009
| ||GCSE Success Edexcel Maths Higher Revision Guide |
This book puts all the notes you need in one place with limited examples. All of the Specification is set out.
|GCSE Success Edexcel Maths Higher Workbook (GCSE Success Revision Guides and Workbooks) |
This gives lots of examples with answers to reinforce your ideas.
There are lots of sites that give you help (videos, worked examples, etc). This one is the BBC Bitesize – Statistics Site