skill Builders are great tools for keeping children current during the school year or preparing them for the next grade level. A variety of fun and challenging activities provides students with practice and helps introduce basic skills to new learners. This full-color workbook contains appropriate passages and exercises based on national standards for fourth grade to help ensure that children master necessary math skills before progressing. skill Builders combines entertaining and interactive activities with eye-catching graphics to make learning and reviewing fun and effective. The compact 6" x 9" size makes this book perfect for school, at home, or on the go. 80 perforated, reproducible pages with an answer key.