“Eureka Math – a Story of Units: Learn Workbook, Grade 4, Module 4” by GM Pbc is a study guide published by Great Minds in 2017. This trade paperback book focuses on mathematics in the subject area of general education. It is designed for both high school and elementary school students, making it a valuable resource for those looking to improve their understanding of mathematical concepts. With English language text and units organized in a clear and structured manner, this workbook is an essential tool for students aiming to master the subject of mathematics.