Showing a solution lies in an interval by a change of sign, rearranging an equation into the form $x = g(x)$, using an iteration formula $x_{n+1} = g(x_n)$ (including formulas with $x_n$ more than once), growth and decay, finding a solution to a given accuracy and checking it with bounds, when an iteration fails, exam-style questions, and staircase and cobweb diagrams · eleven levels, full worked solutions