I picked up a Language Arts workbook at Barnes and Nobles for under $10. It is from Harcourt Family Learning (purple workbook) and I am extremely impressed with the content. It covers Grammar, Punctuation, Vocabulary (grammar vocabulary like Homophone), writing (in grade 2 in covers sentence, paragraph, main idea, supporting ideas, order, personal narrative, poem writing, describing, friendly letter, how to, information paragraph, persuading paragraph, and a book report), plus research skills. They will give practice pages besides the page skills are introduced. Some things need extra explanations but easy to teach since they give definitions and examples.