Learning goals: Teacher Facing Given quadratic equations where one side is a product of factors and the other is zero, find the solution(s) and explain (orally and in writing) why the solutions make the equation true. Understand that the “zero product property” (in written and spoken language) means that if the product of two numbers is 0 then one of the factors must also be 0. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from Alg1.7 Quadratic Equations, Algebra 1.