This lot of two student workbooks is perfect for Grade 1 students who need extra practice in math. The workbook is from the "IM K-5 math" series and includes Units 5-6 and Units 7-8. It is authored by Illustrative Mathematics and published by Kendall Hunt Publishing Company. The workbook is in English and has a format of Book, Other. The workbook is suitable for students who are looking to improve their skills in mathematics and is an excellent resource for educators. It has been designed to help students develop their knowledge and understanding of math concepts in a fun and engaging way.