Description: A serious math introduction book for young children. Through the combination of numbers and shapes, it simultaneously develops abstract, logical thinking and intuitive, sensory thinking. Thinking Toddler Math 2A: Serious Math Introduction for Young Children (Ages 5-7) Part 1 - Shapes Part 2 - Sets, Correspondence, Measurement Thinking Toddler Math 2B: Serious Math Introduction for Young Children (Ages 5-7) Part 1 - Direction, Classification, Arrangement Part 2 - Number Operations Author: CMATH Math Research Institute Recent Works: , , , and 146 titles in total About the Author: The CMATH Math Research Institute, composed of researchers with passion and talent for math education, researches and develops the best and most optimal math curricula and content to strengthen learners' mathematical thinking, based on the academic characteristics of mathematics and a learner-centered educational philosophy. Having popularized the concept of "critical thinking math" through the CMATH program, the institute has also led the flow of math education by developing the Gifted program for gifted students, the 1031 Math & Science series of published textbooks, the 1031 Gifted Assessment, the Top 960 series, the Top Clever Math series, the Thinking Toddler Math series, the Top Math TenTen: Exploration and Solving of Problems series, and various multimedia math content. Thinking Toddler Math is a serious math introduction series for young children that embodies beautiful math, enjoyable math, critical thinking math, and everyday life math. It is a workbook that develops abstract, logical thinking and intuitive, sensory thinking simultaneously by combining numbers and shapes. Mathematics is the study of numbers and space. For young children who think and understand through the shapes of objects, a math education method that combines shapes and numbers allows them to experience the inherently abstract world of mathematics in a sensory and concrete way, building their potential ability in math and increasing their interest in it. [Book Composition] 2 books for each age group (ages 5-7), 6 books in total [Recommended Ages] Thinking Toddler Math 1A: Serious Math Introduction for Young Children (Ages 4-6) Thinking Toddler Math 1B: Serious Math Introduction for Young Children (Ages 4-6) Thinking Toddler Math 2A: Serious Math Introduction for Young Children (Ages 5-7) Thinking Toddler Math 2B: Serious Math Introduction for Young Children (Ages 5-7) Thinking Toddler Math 3A: Serious Math Introduction for Young Children (Ages 6-8) Thinking Toddler Math 3B: Serious Math Introduction for Young Children (Ages 6-8)