Hi, everyone. My son just finished the Life of Fred Elementary Series (Apples through Jellybeans) and we did some extra math problems using bits and pieces of another curriculum to give him extra practice. He is already a middle-schooler (we started math a little late), and I am wondering if the "intermediate" books (Kidneys through Mineshaft) are a necessary transition to Fractions or if he can just move directly to Fractions. Jellybeans touches a bit on fractions so I feel he is ready. My concern is that the intermediate books might contain information/skills that he needs before Fractions. My son is a pretty fast learner but I don't want to skip things that are valuable. Thank you.