All the support you need to teach the Edexcel International GCSE Biology required practicals with technician notes, model results, advice on common student mistakes and additional experiments to extend knowledge. - Provide full coverage with technician notes for every core practical, complete with equipment lists and safety notes. - Offer guidance around possible causes for different kinds of anomalous results for each experiment. - Highlight common student mistakes with explanations on how to address them. - Help provide a holistic approach to teaching practicals with suggested variations on the core practicals, linked experiments and extension experiments. The Teacher Books include answers to all of the questions in the accompanying Lab Workbooks, complete with mark schemes and with extension and maths questions flagged.