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Solving Quadratic Equations

Three complete lessons on solving quadratic equations:

  • Factorising quadratics is a two-part lesson with the first activity on factorising quadratics where the coefficient of x^2 is 1, followed by a coefficient greater than 1. Both lesson parts are fully differentiated with examples and answers. The lesson starts with a product and sum activity to get students thinking about possible pairs of numbers.

  • Using the quadratic formula features several examples with a, b and c colour coded to make it more visual. Meanings of solutions discussed with images of graphs included. Differentiated main task.

  • Completing the square starts with a multiple choice activity where students identify which is the correct factorisation given a variety of questions. Several examples precede a differentiated main task.