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Produced by Practical Action, these materials contain ideas and support for students undertaking a CREST award. There are stimulus materials that help students look at an issue of sustainable development. These materials look at provision clean and reliable drinking water. It looks at sustainable systems such as rainwater harvesting, irrigation, water pumps and land contouring. Techniques, such as distillation, are shown as methods of cleaning water to make it fit for drinking and the recycling of waste water. The 'Getting Started' guide has teacher guidance on how to link the projects with the CREST awards scheme from the British Science Association.

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