The Sharp EL-W531TL is a scientific calculator with just the right amount of functionality, making it just what you need for international examinations, such as IGCSE Mathematics. WriteView makes fractions look like fractions and roots look like roots. Table Mode is great for function, graph and sequence questions, and accepts two functions – better than similar Casio models. Does not calculate numerical derivatives or integrals for Calculus, so less appropriate for Additional Maths or AS and A-level exams (for these we recommend the EL-W506T).