My son just finished Algebra 1 but had some difficulty. He takes Geometry next. His teacher recommended that he review Algebra 1 over the summer to review what he missed instead of doing a geometry prep class. Since time is limited before school starts, is there a pre-test for the Alg 1 so that he can just target the material he missed? Or, is there a review at the start of the Alg 2 course that would serve as a good Alg 1 review?