2.19 Introduction to Equations of Straight Lines GCSE PowerPoint Lesson

In this 35-slide lesson, students are introduced to the concept of straight-line equations, focusing on the gradient and y-intercept. They will learn how to identify these key features from a graph and how to calculate the gradient using two coordinates. The lesson also explores how to extract the gradient and y-intercept directly from an equation in the form y = mx + c. This builds a strong foundation for understanding the connection between algebraic and graphical representations of linear relationships.

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.