3.21 Surface Area of Complex Objects GCSE PowerPoint Lesson

In this 25-slide lesson, pupils will explore how to calculate the surface area of complex three-dimensional objects, including spheres, cones, and pyramids. They will be introduced to the specific surface area formulas for each shape and learn how to apply them accurately, paying close attention to curved and slanted surfaces. Pupils will reason through examples by identifying the parts of each shape, such as the base and lateral faces, and will practise breaking down compound surfaces into manageable sections. Emphasis will be placed on correct substitution, clear working, and appropriate use of units.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• One structured task to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential geometry concepts.