Dimensions Math 3A Textbook

This 220-page, full-color textbook follows Singapore Math methodology with a structured lesson format designed to build conceptual understanding before procedural practice. Each chapter begins with an engaging scenario that connects to real-world applications, then progresses through Think (exploring problems using multiple methods), Learn (presenting solutions with formal definitions), and Do (varied practice for discussion or independent work). Regular Practice and Review sections consolidate learning throughout the semester.

Topics in this first-semester third-grade text include working with numbers to 10,000 (place value, comparing, rounding to nearest thousands, hundreds, and tens), addition and subtraction, multiplication, division, and interpreting graphs and tables. Pencil icons throughout link to corresponding exercises in the separate workbook, coordinating textbook instruction with independent practice.

The Dimensions Math series divides the school year into two semesters—this "A" book covers the first half, while the "B" book (sold separately) completes the year. Both the corresponding workbook and instructor's guide are essential components, as each serves a distinct function in the complete program.