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Find your added subjects in My Bitesize. Prime factors ... Index notation – WJEC Indices are a way of representing numbers and letters that have been multiplied by themselves a number of ...

Often in algebra we have an equation that we want to solve. This frequently involves manipulating the equation in various different ways to achieve a desired outcome. Key fact The golden rule when ...

The perimeter of a shape is the distance around the outside. It is a length so is measured in mm, cm, m, km or any other unit of length. 1. Calculate the lengths of the missing sides. The total ...

A function is a way of describing what happens to an input variable, in order to get the output result. \(\text{Input} \rightarrow \text{FUNCTION} \rightarrow \text{Output}\) If we think of a ...

A sphere is a perfectly round solid figure. All points on the surface of the shape are the same distance away from the centre – we call this distance the radius. The formula for the volume and ...

The inequality will be solved when \({m}\) is isolated on one side of the inequality. This can be done by using inverse operations on each stage of the sum. The final answer is \({m}~{\textgreater ...

The gradient of a straight line describes the slope or steepness of the line. \(\text{Gradient =}~\frac{change~in~y}{change~in~x}\) To determine the gradient of a line: choose any two points on ...

You do not need to learn these terms, just be able to describe the main changes. Investigate the BBC Bitesize guide to cell division for text explainers, infographics and more biology GCSE ...

These questions are suitable for WJEC geography students ... quick-fire quizzes or practise GCSE exam-style questions for maths, biology, chemistry, physics, combined science, computer science ...

Find your added subjects in My Bitesize. Listen up ... it's time to test your maths skills ... with different note and coin combinations, with BBC Bitesize. Find out how many minutes are in ...

Find your added subjects in My Bitesize. A computer virus is a simple program made to harm a computer system. It spreads by duplicating and attaching itself to files. Sometimes the damage is minor ...

Pythagoras' theorem - Intermediate & Higher tier - WJEC Pythagoras’ theorem allows ... Read through this GCSE maths study guide and learn how to convert kilometres to miles, calculate ...

No measurement is completely accurate as there will always be some degree of error when measuring. You may say you are 163 cm tall but you could really be 163.42 cm ...

The BBC Bitesize guide to kinetic theory contains infographics and text to explain concepts such as the changing states of matter, plus more physics revision notes written to the WJEC GCSE physics ...

Find your added subjects in My Bitesize. This system is mainly concerned ... Skeletal system - WJEC The skeleton is the central structure of the body and is made up of bones, joints and cartilage.

Find your added subjects in My Bitesize. When working with a script, look carefully at the setting, stage directions and dialogue. Researching the roles and the play's background helps you ...

Find your added subjects in My Bitesize. Fiction texts are examples of writing that use language in a highly creative and artful way. Setting – WJEC The setting of a text includes the location ...

Find your added subjects in My Bitesize. Threats to coastal communities ... Environmental challenges – WJEC Consumerism has been and still is a vital component in the world’s economies.

Plotting graphs of inequalities works almost exactly the same way as plotting graphs. Simple inequality graphs can be plotted parallel to the \(x\) or \(y\) axes and tables of values can help to ...

To factorise an expression, we need to take out any factors that are common to each term. The process is the opposite of expanding brackets. We need to find the HCF of \(\text{10x}\) and \(\text ...

This is the line \(\text{x = 3}\): Similarly, lines in the form \(\text{y = b}\) will always be horizontal lines. For lines in the form \(\text{y = cx + d}\), you ...

A translation is a shift of the graph either horizontally parallel to the \(x\)-axis or vertically parallel to the \(y\)-axis. If \(f(x) = x^2\), then \(f(x) + a = x^2 + a\). The value of \(a ...

Savings can be described as a pot of money which you set aside. You might decide that you will save a certain percentage of your income every month. Sometimes people use a special type of bank ...

Equations that have more than one unknown can have an infinite number of solutions that make it true. For example, \(2x + y = 10\) could be solved by: \(x = 1\) and \(y = 8\) \(x = 2\) and \(y = 6 ...

To construct the tangent to a curve at a certain point A, you draw a line that follows the general direction of the curve at that point. An example of this can be seen below. Once the tangent is ...

Substitution is the name given to the process of swapping an algebraic letter for its value. Consider the expression 8\({z}\) + 4. This can take on a range of values depending on what number \({z ...

What if we have an equation such as \({p}\) + 3 = 11? This time, in order to get \({p}\) on its own we would need to subtract 3 from both sides of the equation. This would leave us with \({p ...

Are you ready to face a tricky maths challenge? BBC Bitesize has partnered with White Rose Maths to provide some problem solving questions to have a go at. If you want to solve more problems then ...

The interquartile range is another measure of spread, except that it has the added advantage of not being affected by large outlying values. In order to calculate this value we must first ...

CCEA maths unit 5 (calculator and non-calculator ... paper 1 exams will take place on morning of Friday, 23 May. WJEC English Language unit 2 will take place on morning of Friday, 23 May.

New length = original length × scale factor. Boxes of matches are sold in three different sizes: small, medium and large. The medium box is an enlargement of the small box using a scale factor 2 ...

A strong correlation is when the points on the scatter graph lie very close to the line of best fit. With a strong correlation, the two variables are related to one another - as one changes, so ...

If we are given equation of the line instead of the graph, we can still determine the gradient. Equations of straight-line graphs are given in the form: \(\text{y = 2x - 1}\) The gradient is 2 and ...

The approximation we use for kilograms (kg) to pounds (lb) is 1 kg = 2.2 lb. To convert from kilogram to pound, we multiply by 2.2. \(\text{kilogram}~\rightarrow~\times\text{2.2}~\rightarrow\text ...