All that we love about Singapore Math wrapped into a new edition. Lessons incorporate Readiness, Engagement, and Mastery segments. Standards and research-based content. Lively, colorful, consumable Student Books. Note: Two books (A and B) for each grade correspond to the two halves of the school year. Answer key in Home Instructor’s Guide. Singapore Primary Mathematics Student Book Kindergarten A (2022 Edition) 9789814911344