The 6th Grade Envision Mathematics Additional Practice Workbook 2021 is a trade paperback textbook published by Savvas Learning Company. Written by Scott Foresman, this workbook is designed to provide additional practice for 6th-grade students in the subject of elementary mathematics. The workbook includes various exercises and activities to help students reinforce their understanding of mathematical concepts covered in the Envision Mathematics curriculum. It is a valuable resource for educators and students looking to enhance their math skills and knowledge.