2.66 Sum of Arithmetic Series IGCSE PowerPoint Lesson

In this 37-slide lesson, pupils will learn how to calculate the sum of terms in an arithmetic sequence using the formula involving the number of terms, first term, and last term (or common difference). The lesson begins with a recap of arithmetic sequences and leads into deriving and applying the sum formula. Pupils will solve problems involving missing values and use the formula in both numerical and contextual situations. This lesson builds fluency with algebraic manipulation and prepares students for further work with sequences and series at AS Level.

This lesson is for the higher tier only.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Three structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential algebra concepts.