Solving inequalities seems to be a favourite maths GCSE question ... although it's fairly useless in real life. Even though we do tend to think in inequalities (see top tips) .... I haven't really come across a great application. It's good practice for linear equation solving - and can look interesting on a whiteboard - but that's about it. Sorry. Unless you know any … [Read more...]

 Completing the square questions are becoming more popular with GCSE maths, as the technique can be useful if you're intending to study at a higher level. The main use is factorising and finding out the maximum and minimum values of a quadratic equation. Once you're familiar with the method, completing the square becomes quite straightforward. This video is a reminder of … [Read more...]

Perpendicular lines on a graph ... are one of those questions that come up fairly infrequently, although it can be an easy few marks if you remember how to plot them. Parallel lines tend to be more popular so I've included both types of questions in the videos below. Top Tips! ● Draw accurately and use a table to work out the points you need ● Parallel lines have the same … [Read more...]

 Surds ... are becoming more popular with GCSE maths questions although, rather than calculating, you'll be expected to leave the answer in a 'surd form.' This usually means leaving as a square root, which cannot be reduced to a whole number. They are much more accurate than trying to calculate with decimals, although it's quite difficult to give precise answers to the … [Read more...]

Download a copy of the questions here: QT - Inequalities on Graphs Download a copy of the written answers: QT - Inequalities on Graphs ANSWERS Inequalities questions seem to be asked either as finding a region on a graph, solving or showing on a numberline. They're all around level 6 in GCSE mathematics and it's worthwhile practising the types of questions … [Read more...]