Equation Lab: Solve Two-Step Equations

Two steps: undo the adding or subtracting, then undo the multiplying or dividing. In this grade 7-8 algebra lesson, students put the steps of a solution in order, then solve two-step equations by dragging, typing and choosing, including fractions and a negative coefficient. They pick the first move from a list, finish a worked solution, match equations to solutions, find the mistake in a student's work, model a gym-membership word problem, and finish by catching every equation on a moving belt whose solution is x = 3. Every problem has a read-aloud button, and every wrong answer shows a hint.

• 13 two-step equation problems with read-aloud and hints
• Order-the-steps, drag, type, dropdown and fill-in-the-blank items
• An equation-to-solution match and a find-the-mistake task
• A gym-membership word problem to model and solve
• A moving-belt finale: catch every equation with x = 3

• Solve two-step equations of the form ax + b = c and x/a + b = c, including negative numbers.
• Choose the right first step: undo adding or subtracting before multiplying or dividing.
• Find and fix an error in a worked solution.
• Write and solve a two-step equation for a real-world problem.