HMH Science Dimensions Grade 4 Volumes 1 & 2 Student Edition HMH 2018 Softcover Houghton Mifflin Harcourt Science Dimensions Grade 4 Student Edition softcover set includes both Volume 1 and Volume 2. These comprehensive workbooks cover essential science standards through engaging lessons, evidence notebooks, and engineering challenges. Designed for the 2018 curriculum, these 3-hole punched volumes are ideal for classroom use or homeschooling. The colorful pages include interactive sections for students to record observations and solve problems. ISBN-13: 978-1-328-90512-3 (Vol 1) ISBN-13: 978-1-328-90456-0 (Vol 2) Very light pencil markings on a few first pages that has been erased.