Dimensions Math 1A Textbook

This first-grade textbook employs a consistent 5-step lesson format (Think, Learn, Do, Activities, Workbook) that guides students through mathematical concepts using the concrete-pictorial-abstract approach. Each lesson begins with chapter openers featuring real-life scenarios that spark discussion, then progresses through hands-on exploration with manipulatives like linking cubes and number cards, visual representations with number bonds and diagrams, and finally abstract equations. For example, addition lessons might start with students physically manipulating linking cubes, move to pictorial bird illustrations, introduce number-bond diagrams, and conclude with written addition equations—all within a single cohesive lesson.

The curriculum covers numbers to 10, numbers to 20, addition and subtraction within 20, ordinal numbers, and number bonds. Lessons emphasize conceptual understanding through interactive activities and mental math strategies, with periodic practice sections and two cumulative reviews built into the semester to reinforce skills. The textbook links directly to corresponding workbook exercises, creating a coordinated learning system.

As a semester-long resource, this "A" level textbook covers the first half of first grade, with a companion "B" textbook required for the complete school year. The program is designed for use alongside the corresponding workbook and either a Home Instructor's Guide or Teacher's Guide, as these three components work together to provide complete lesson plans, teaching strategies, and practice opportunities. The publisher provides access to printable resources and materials lists to support the hands-on teaching approach.