This is an excellent whole lesson on Bearings and Trigonometry (SOH CAH TOA) which is KS3, GCSE and IGCSE ready. The lessons comes with resources to teach a subject that is often done poorly in exams.

This is the first lesson introducing the topic of Trigonometry. This lesson is about building an understanding of what trig is by doing various rich tasks and activities and starting to use SOHCAHTOA.