

Help students explain how human activities strengthen the greenhouse effect.
The Human Influence connects the natural greenhouse effect with additional warming caused by human activity. Students examine carbon dioxide, methane and nitrous oxide, alongside the role of deforestation. They distinguish the amount of a gas released from its warming power and connect each source to recognisable activities.
Learning covered
- Explain the natural and enhanced greenhouse effects.
- Identify major human sources of greenhouse gases.
- Compare carbon dioxide, methane and nitrous oxide.
- Explain how deforestation changes carbon storage and emissions.
- Use diagrams and data to support explanations of human influence.
Teaching options and materials
Choose between the tiered Full Lesson presentation and the focused Essentials presentation. Matching materials include the Full Lesson workbook in colour, black and white and a version for typed responses, plus completed and student-notes Essentials Booklets with black-and-white alternatives. Exam practice, a mark scheme, a short assessment and a START HERE guide are included.
Teach the Gas
Each student becomes an expert on carbon dioxide, methane, nitrous oxide or forests. They make a teaching card, write three quiz questions with answers and teach another team. Students are then quizzed on material they heard from somebody else. Challenge slips ask them to explain why a gas matters even when one headline figure seems to suggest otherwise. The collaborative lesson has its own presentation and printable pack.
Designed for ages 14–16 and Cambridge IGCSE Geography 0460 climate change topics. Supplied as PowerPoint and Word files, plus a PDF guide. Text and tasks can be adapted; illustrations are embedded images.
Module 3 of the six-module Geography Oasis Climate Change unit.
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