Jacob's math takes a gentle approach and includes good explanations, comic strips, visual puzzles, and practical examples. The Textbook contains 1/4 of the answers, and the Instructor’s Manual contains very helpful teaching instructions plus the other 3/4 of the answersnot very convenient, I need all the answers! If you are coming from Saxon, Jacob’s Algebra can be started right after Saxon Algebra 1/2. Following Algebra, the Geometry book offers a classic approach to Euclidean geometry that includes proofs, deductive logic, and plane geometry in an appealing presentation. Hardcover textbooks.