Learning goals: Teacher Facing Explain (orally and in writing) the meaning of solutions to equations in one variable and two variables. Find solutions to equations in one variable and in two variables by reasoning about the relationships in context. Interpret solutions to equations in one variable and in two variables. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from Alg1.2 Linear Equations, Inequalities, and Systems, Algebra 1.