The phrase references a specific textbook edition used in mathematics education and the desire to obtain it at no cost in a digital format. It encompasses the title of a curriculum, the grade levels it is designed for, the file type associated with digital documents, and the condition of being offered without charge.
This particular math resource is a component of a structured curriculum known for its incremental approach to learning mathematics concepts. The accessibility of this material without financial investment can be a significant benefit for students, educators, and parents who seek alternative or supplementary educational resources. Historically, obtaining educational materials involved purchasing physical copies; however, the proliferation of digital resources has enabled wider dissemination.