Here's a few videos on how to work with scale factors, that I hope might be useful. They are becoming a little more popular on GCSE mathematics as you need to demonstrate a clear, logical method. However the questions can a be a little tricky: You need to remember that the scale factor is usually calculated as a linear measurement Once you have calculated the scale factor … [Read more...]

            GCSE mathematics enlargement by a negative scale factor questions appear on many exam papers and you can download the questions here. The main things to remember when working with these types of questions are: Always draw the 'lines of enlargement' as accurately as possible - they really help to show where the … [Read more...]

 This video is about how to 'rationalise the denominator' - which is just a way of changing the bottom of a fraction to a whole number - and gives a few examples: 5 divided by 3√2 becomes 5√2 / 6 and 18 divided by √3 becomes 6√3 Like many of these exercises, in isolation, they appear to be fairly irrelevant - it's only when you need to manipulate equations in … [Read more...]

This post is just a random collection of tough maths questions - asked by YouTube subscribers, tutoring students, or occasionally my own study. Many of the questions are 6 - 9 grade and present a good level of challenge for all students. It's quite likely that the videos will include word problems, statistics, geometry, algebra and some of the new topics that will be on … [Read more...]

 This video is all about how to simplify algebraic fractions. Solve: (x² - 25) / x² + 7x + 10 The question is aimed at around grade 6+ GCSE maths. Top Tips! Always work down the page, with the equals sign in the middle Show each stage of your calculation Learn to read right to left ... sometimes it's easier to keep the value of x on the right hand … [Read more...]