Gas Exchange and Stomata - KS3 Biology Extension Pack

Four ready-to-use enrichment activities for KS3 Biology students who've mastered the basics of gas exchange and stomata — ideal for extension tasks, homework, cover lessons, or stretching high achievers. No preparation required. Suitable for students aged 11-14. Gas exchange is when a photosynthesising leaf takes in carbon dioxide gas and releases waste oxygen gas.

Each activity targets higher-order thinking: a 12-term vocabulary matching exercise covering terms such as diffusion, concentration gradient and net movement; a 27-mark challenge quiz with multiple choice, true or false, a data table of stomata counts and written explanations; a 19-mark case study on greenhouse tomato growers adding extra carbon dioxide; and a creative Teach It Back task where students write a one-page guide for a Year 5 class, assessed with a provided rubric. Every activity starts on a fresh page, so the pack can be printed and handed out one task at a time, in class or at home. Full answer keys and marking guidance are included for all activities. Comes as a PDF and an editable Word file (DOCX).

Full lesson page with the video, quiz and free worksheet: https://inewittall.com/ks3-biology/gas-exchange-and-stomata/?utm_source=payhip&utm_medium=listing

Watch the full lesson on YouTube: https://youtu.be/tTMSPo6Osec

Pairs with the main 100-mark KS3 Biology worksheet on this topic. Buy both together as a complete lesson bundle and save £1.