This engaging lesson guides students through the homeostatic control mechanism which is involved in controlling blood glucose concentrations and focuses on the critical interconversion between glucose and glycogen which is often poorly understood. The lesson begins by introducing glucose and ensuring that students recognise that this is a simple sugar which is critical for respiration. Links are made here and throughout the lesson to relateable topics such as the endocrine system so that students can recognise how exam questions will often encompass more than one topic. Students are challenged to recall knowledge about the pancreas and its release of insulin into the blood to travel to the liver. A quick competition is then used to maintain engagement and to introduce glycogen. Due to the large number of words beginning with g that are involved in this topic, time is taken to describe the role of glycogen so that it is not mistaken for glucose or glucagon. Students will learn how the conversion from glucose to glycogen and also the other way round is critical to how the concentration is controlled. The main student tasks involve them completing a partially finished passage about responding to an increase in blood glucose concentration and then using this as a guide to write their own full versions for when concentrations are low. These are just two of a number of progress checks that are written into the lesson at regular intervals so that students can constantly assess their understanding.
This lesson has been written for GCSE students (14 - 16 year olds in the UK) but could be used for A-level lessons that are recapping on this topic before extra knowledge is added at this higher level
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