Free KS2 cause and effect resource pack with worksheets, teacher notes and videos. Ready-to-use lessons on causal reasoning and critical thinking. Help pupils explore cause and effect using simple causal diagrams This free Key Stage 2 resource introduces causal reasoning through discussion, worksheets and short videos. Adaptable for Science, **PSHE **, English and critical thinking lessons. Why teach causal reasoning? Understanding cause and effect is an important part of critical thinking, science and everyday decision making. This resource pack introduces Key Stage 2 pupils to causal diagrams, a simple visual tool that helps learners think clearly about how events are connected. What’s included? Classroom worksheets Teacher guidance and lesson notes Structured discussion activities Practical exercises Links to short explainer videos About the resource The materials were developed by researchers at the University of Cambridge and have been reviewed by experienced primary school teachers. They are designed to be easy to use with minimal preparation and can be delivered as standalone lessons or incorporated into existing curriculum topics. Learning objectives By the end of the activities, pupils should be able to: Identify causes and effects Explain their reasoning Evaluate causal claims Communicate ideas using simple diagrams