Investigate evolution using a real-world study of ring-tailed lemurs! Explore microevolution, natural selection, selective pressures and changes in allele frequency in this resource using lemur teeth as an example. In this lesson, students investigate how an environmental pressure influences survival of lemurs and the inheritance of alleles, leading to changes in tooth size over subsequent generations. This 4 page worksheet activity is a standalone resource, which guides learners through key concepts of evolution, navigating common misconceptions carefully. This activity is grounded in published scientific research, but presented in a clear, student-friendly way suitable for secondary biology classrooms. The activity can be completed as a whole, challenging learners to think and reflect metacognitively about their own preconceptions or can be truncated to a shorter two page activity (pages 2a, 2b). Teaching notes • No specialist equipment required (printable worksheet) • Works as a standalone lesson or as part of an evolution unit • Academic references are provided for teacher background knowledge

Enjoy this free resource – a sheet for identifying the anatomical structures of the flower, for plant reproduction topics. This annotated sheet allows learners to match up the different parts of the flower with the definitions. To use, simply print off the sheet (A3 works well) and pull apart flowers by hand (or with tools) to separate the structures. Place the correct structure in each of the boxes. A bonus activity is to hand out additional copies of the sheet and encourage learners to draw the parts of the flower they have dissected out. To extend learning, students can try to separate different types of flowers and compare between multiple species. Teaching notes • Required: flowers for dissection • Optional: dissection tools, multiple flower types • Works as a learning or revision activity • Be aware of allergies when using flowers in the classroom