The Houghton Mifflin HMH into Math Grade 1 Student Modules 1-18 are a comprehensive collection of mathematics educational materials designed for students in Grade 1. Published by Houghton Mifflin Harcourt in 2020, these book modules cover essential math concepts in an engaging and interactive format. With a focus on English language and featuring the author HMH, these modules provide a structured learning experience for students in the subject of Mathematics. Made in the United States, this full set of modules is a valuable resource for educators and students looking to enhance their math skills.