(Series Description) The environmental crisis forms an increasingly important part of the wider culture in which young people are growing up. The signs are that these issues will become more pressing and urgent in the immediate future. However, despite the obvious importance of these issues, most schooling continues with little direct engagement with questions of environmental change The true worth of a school subject is revealed in how far it can account for and respond to the major issues of the time. The books in this series are about teaching school subjects with a commitment to Education for Sustainable Development. The books will inform teachers about environmental issues and offer inspiration for teaching lessons with critical environmental awareness. Practical advice will be provided on how teachers can develop approaches to curriculum and learning which help students understand the nature of the contemporary world. (Title Description) We are surrounded by images and warnings of impending environmental disaster. The threats posed by climate change, mass extinction, economic depression and other global challenges are regularly reported, discussed and debated. People have access to huge amounts of information, from the most rigorous scientific data to the most malicious misinformation. And all of it depends on mathematics. Teaching Mathematics as if the Planet Mattersprovides detailed and practical advice on how Mathematics teachers can develop approaches to curriculum and learning which help students understand the nature of the contemporary world. It sets out a model for teaching and learning that allows teachers to examine existing approaches to teaching and draw upon the insights of mathematics as a discipline to help students relate classroom mathematics to global issues such as climate change, the economy, Human rights, food supplies and biodiversity. Including teaching activities, practical examples, case studies and suggestions for further reading the book shows how classroom mathematics relates to: the mathematics of description in the measuring, recording and statistical analysis that informs our knowledge of climate change, consumption and sustainability the mathematics of prediction in the modelling used by governments, scientists and businesses to plan roads, power stations and food supplies and their effects the mathematics of communication in the news reports, blogs and environmental campaigns, incomplete without graphs, charts and statistics. The true worth of a school subject is revealed in how far it can account for and respond to the major issues of the time. The issue of the environment cuts across subject boundaries and requires an interdisciplinary response. Mathematics teachers are part of that response and they have a crucial role in helping students to respond to environmental issues and representations.