Fun activities will help your children succeed all year long! Mastering Basic Skills: Second features worksheets that cover a variety of math and language arts topics, including addition and subtraction facts to 20, nouns, verbs, verb tenses, contractions, writing a friendly letter, descriptive sentences, number words to 100, telling time, and more. Correlated to Common Core State Standards.159 non-reproducible pages, softcover; consumable workbook. Grade 2.