Mathematics section Handling numbers; Working with fractions; Percentages; Powers; Circles and spheres; Approximation and errors; Introduction to graphs; The gradient of a graph; Algebra; Polynomials; Algebraic equations; Quadratic equations; Simultaneous equations; Sequences and series of numbers; Working with powers; Logarithms; Exponential growth and decay; Differential calculus; Further differential calculus; Integral calculus; Further integral calculus; Using graphs; Recognising patterns in graphs Applications of mathematics section SI units; Moles; pH; Buffers; Kinetics Statistics section The language of statistics; Describing data: measuring averages; Standard deviation; Checking for a normal distribution; Degrees of freedom; How to use statistics to make comparisons; The standard error of the mean; Confidence intervals; Probability; Significance and P values; Tests of significance; t tests; Analysis of variance; The chi-squared test; Correlation; Regression; Bayesian statistics