I am currently studying for the CSET Mathematics Subtest III. I have taken and passed I and II and I primarily used Laura Rickhoff's study guides; they were great! For Subtest III, I have gone through Laura's study guide but I feel like I need to review some extra material. I am thinking of purchasing a OCDE study guide for Subtest III. I am curious if anyone here has purchased these study guides before, and what their thoughts were? Thank you!