We began today by reviewing his homework problems. He did well on them. I made suggestions on how to improve his notations (for example he's writing 5xm instead of 5m). Next, we pulled problems from the textbook for further practice. Aiden practiced evaluating an algebraic expression with the given input values. He used substitution to "plug in" the given value and then applied the order of operations to simplify. He did a great job recalling that multiplication comes before subtraction.