excellent book!!!! great details, I never worry if i can't review it with my son -it is all in th etext!!1 lots od CD helps too -my son really liked this feature -bought the stroy to life1 the experiments are easy to do and most items are around your home -but i would take advantage of buying the experiment kit next time -saves time running around for those need ed items and probaly save money!!! If I were starting homeschooling from the beginning i would use this currriculum all the way!!! the new editions are loaded with more vivid colored diagrams -esp good for younger learners! love love love!!!!!!!