The Human Gas Exchange System and Breathing - KS3 Biology Extension Pack

Four ready-to-use enrichment activities for KS3 Biology students who've mastered the basics of the human gas exchange system and breathing — ideal for extension tasks, homework, cover lessons, or stretching high achievers. No preparation required. Suitable for students aged 11-14. 🚀

The gas exchange system is the group of organs that work together so you can breathe. It is also called the respiratory system.

🧠 Each activity targets higher-order thinking: a 12-term vocabulary matching exercise (12 marks) covering the trachea, bronchi, alveoli, diaphragm, pressure and volume; a 25-mark challenge quiz with multiple choice, true or false, ordering and a lung volume data table; a 20-mark case study on the iron lung and how it moved air into the lungs of polio patients; and a creative Teach It Back task where students write a one-page guide for a Year 5 pupil, assessed with a provided rubric. Full answer keys and marking guidance are included. 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/the-human-gas-exchange-system-and-breathing/?utm_source=payhip&utm_medium=listing

▶️ Watch the full lesson on YouTube: https://youtu.be/tj1iZkWPUW8

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

KS3 Biology

extension

enrichment

vocabulary matching

challenge quiz

case study

iron lung

Teach It Back

gas exchange system

breathing

diaphragm

air pressure