This is a free sample of Unit A – Understanding Waves and Optical Fibres from the new Level 3 BTEC Nationals (AAQ) 2025 qualifications. The focus of Unit A1: Working with Waves is to help students understand the fundamentals of waves through engaging, ready-to-use teaching resources. Why download? Get a preview of high-quality teaching resources for the new 2025 BTEC Nationals Engage students with interactive learning Save time with ready-to-use lessons and worksheets