Activate 1: B1: 2.2 Gas Exchange

Complete lesson PPT with learning outcomes, new knowledge and activities detailed on the slide. The lesson includes a demonstration, in which air is bubbled through limewater, followed by a mini-practical where students bubble exhaled air into limewater, through a straw. The resource is designed to be used with the Activate B1 2.2 Activity Sheet(The Composition of Inhaled and Exhaled Air) with the Activate B1 2.2 Support Sheet providing a graph grid for pupils to plot data (where needed). The lesson is ready to go and is designed to support pupils aiming for developing and secure outcomes. All pupils should be able to name the parts of the gas exchange system; most pupils should also be able to describe the structure of the gas exchange system; whilst some pupils should, in addition, be able to describe how the parts of the gas exchange system are adapted to their function. Keywords include gas exchange, lungs, ribcage, respiratory system, trachea, alveolus, inhale, and exhale. Further information and pupil activities can be found on pages 28 and 29, of the blue Activate 1 KS3 Science Textbook.