GCSE Mathematics(9 - 1) New Topics in the Latest Specification

The specification of GCSE has changed dramatically: first of all, students who sit for GCSE as from 2017 onwards, are going to be tested for four and half hours to earn their grade - from 9 to 1; it used to be just three hours. There are going to face 3 papers, each lasting 1 hour 30 minutes: one non-calculator paper and two calculator papers.

 

Edexcel, a major examination board in the UK, has updated its specification as follows:

 

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According to the latest specification, the new topics are as follows:

  • Gradients of Straight Lines
  • Gradients of Curves
  • The Area under Straight Lines and Curves
  • Venn Diagrams
  • Functions, Composite Functions and Inverse Functions
  • The nth term of sequences
  • Trigonometric Values of Angles
  • Turning Points and Inequalities of Quadratic Curves
  • Iteration

According to Edexcel, the assessment material takes the following form:

 

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With the introduction of new topics, the examination boards collectively deal with the criticism that they used to face over what critics term, falling standard in mathematics in the UK. Not only will this enhance the standard as a whole, but also bridge the gap between the GCSE and A Level in a constructive way, making the transition for the prospective students smooth.

Do you need a book that explains the above topics in detail - with lots of worked examples? Here is the book written by the developer of this website, available on Amazon:

It's just
£3.99

 

Here is the Kindle Edition of the Book:

 

 

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Here are some of the examples in the book:

E.g.

A straight line passes through (2,5) and (4, 11). Find its equation.
m = (11 - 5) / (4 - 2) = 6 / 2 = 3
y = mx + c
x = 2, y = 5, m = 3,
5 = 3 X 2 + c
5 = 6 + c
c = -1
The equation is y = 3x - 1.

E.g.

The equation of a straight line is y = 2x - 6. Find the coordinates of the point where it crosses the axes at.
When it crosses the x-axis, y = 0
0 = 2x - 6 => x = 3
(3,0)
When it crosses the y-axis, x = o
y = 2X0 -6 => y = -6
(0,-6)

Functions - f(x)

An expression of a variable is called a function of the variable.

For instance, if y = 2x - 3, which is a function of x, it can be written as follows in function form.

f(x) = 2x -3, which is read as f of x equals 2x - 3.

So, any value that you use within the brackets, replaces the x value on the right hand side. The following example shows it in detail:

f(x) = 2x - 3
f(2) = 2 X 2 - 3 = 1
f(0) = 2 X 0 - 3 = -3
f(-2) = 2 X -2 - 3 = -7
f(x + 1) = 2(x + 1) - 3 = 2x + 2 - 3 = 2x - 1
f(x - 1) = 2(x - 1) - 3 = 2x - 2 - 3 = 2x - 5
f(x/2) = 2(x/2) - 3 = x - 3
f(3x) = 2(3x) - 3 = 6x - 3

E.g.

Find the nth term of the sequence, 3, 4, 6, 9, 13...

The differences between the consecutive terms of the above: 1, 2, 3, 4
The differences between the consecutive terms: 1, 1, 1 of the above
So, the sequence is quadratic.
Let the nth term, N = an2 + bn + c, where a, b and c are constants to be found.
Since there are three unknowns, we need to make three equations.
n = 1; N = 3 => 3 = a + b + c
n = 2; N = 4 => 4 = 4a + 2b + c
n = 3; N = 6 => 6 = 9a + 3b + c
From the first two, we get:
1 = 3a + b
From the last two, we get:
2 = 5a + b
By solving the simultaneous equations, we get,
a = 1/2 and b = -1/2; sub them in the first equation,
c = 3
So, N = (1/2)n2 - (1/2)n + 3.

There are many more worked examples, covering all the new topics.. The book will guide you through all that is needed to master the new, advanced topics.

It's a complete reference material for the new topic of GCSE(9 - 1) - with plenty of worked problems in each topic.

 

 

 

 

Resources at Fingertips

This is a vast collection of tutorials, covering the syllabuses of GCSE, iGCSE, A-level and even at undergraduate level. They are organized according to these specific levels.
The major categories are for core mathematics, statistics, mechanics and trigonometry. Under each category, the tutorials are grouped according to the academic level.
This is also an opportunity to pay tribute to the intellectual giants like Newton, Pythagoras and Leibniz, who came up with lots of concepts in maths that we take for granted today - by using them to serve mankind.

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Recommended Reading

 

Maths is challenging; so is finding the right book. K A Stroud, in this book, cleverly managed to make all the major topics crystal clear with plenty of examples; popularity of the book speak for itself - 7th edition in print.

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