Free sample from GCSE Biology 9-1 Topic Mats found here https://www.tes.com/teaching-resource/gcse-biology-9-1-mats-bundle-12454340 Mat for consolidating B12 Homeostasis in Action/GCSE Biology. Other single units are available. Included are page references to OUP/Kerboodle GCSE Biology Textbook and it is written for the AQA specification (but would be appropriate for other specifications too). This activity is best printed on A3 paper but works well on A4 too. It allows students to focus on key points for the topic and is separated into 12 sections, so if 5 minutes is spent per box, it would be an ideal 1hr activity. https://www.tes.com/teaching-resource/gcse-biology-9-1-mats-bundle-12454340