2.1 Introduction to Algebra – Forming Expressions GCSE PowerPoint Lesson

In this 34-slide lesson, students will be introduced to the language of algebra by exploring how real-world situations can be represented using letters and symbols. Pupils will learn the difference between variables (letters that can change) and constants (fixed values), and will practise writing simple algebraic expressions such as “5 more than a” or “3 times a number n”. The lesson includes interpreting and forming expressions from worded problems to develop fluency and confidence. Students will begin to see algebra as a powerful tool for generalising patterns and solving problems, laying a strong foundation for future topics like simplifying, solving equations, and substitution.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Two structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential algebra concepts.