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Students learn how to calculate the gradient and midpoint of line segments. Later, as learning progresses students work out the equation of a line that runs equidistant between two points.

At the start of the lesson students recap how to write the equation of straight line graphs in the form y = mx + c and ax + by + c = 0.

In the development phase, students learn how to work out the midpoint and gradient of a line segment. Later, as learning progresses coordinate pairs are given as unknowns.

In the plenary, students are challenged to use the gradient and midpoint of a line segment to find the equation of a perpendicular bisector between two coordinate pairs.

My name is Jonathan Robinson and I am passionate about teaching mathematics. I am currently Head of Maths in the South East of England and have been teaching for over 15 years. I am proud to have helped teachers all over the world to continue to engage and inspire their students with my lessons.

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Key Stage 3 lesson on identifying lines of reflective symmetry in 2D shapes.

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How to find the equation of parallel and perpendicular straight line graphs at A-Level.

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AS Mathematics – How to work out the gradient and midpoint of line segments.