This study guide is an academic resource intended to be used in conjunction with classroom work and reading assignments, they aid in mastering material and increase comprehension. A History of US is most often read in 5th and 8th grades (because of state curriculum requirements). The Oxford study guides are often chosen by 5th grade teachers and the Johns Hopkins materials by 8th grade. But this can vary. This study guide is meant to accompt book 1 The First Americans -covering years up to 1600