Description: A serious introductory math workbook designed for preschoolers. Through the combination of numbers and shapes, it helps children develop abstract, logical thinking alongside intuitive, sensory thinking at the same time. Saenggakhaneun Yua Suhak 1A: A serious math introduction for preschoolers (ages 4-6) - Part 1: Shapes - Part 2: Sets, Correspondence, Measurement Saenggakhaneun Yua Suhak 1B: A serious math introduction for preschoolers (ages 4-6) - Part 1: Direction, Classification, Arrangement - Part 2: Number Operations Author: Simath Math Research Institute Recent works: Saenggak Suhak 1031 Elementary 4-1 Workbook, Saenggak Suhak 1031 Elementary 3-1 Workbook, Saenggak Suhak 1031 Elementary 4-1 Concept Book, and 146 titles in total. About the Author: The Simath Math Research Institute is made up of passionate and talented researchers dedicated to math education. Based on the academic nature of mathematics and a learner-centered educational philosophy, the institute researches and develops the best and most optimal math curricula and content to strengthen learners' mathematical thinking skills. Simath has led the way in math education, popularizing the concept of "critical thinking math" through its Simath program, as well as developing the Gifted program for advanced learners, the 1031 Math & Science series, the 1031 Gifted Assessment, the Sangwigwon 960 series, the Sangwigwon Clever Math series, the Saenggakhaneun Yua Suhak series, the Sangwigwon Suhak TenTen: Exploration and Problem Solving series, and a wide range of multimedia math content. Saenggakhaneun Yua Suhak is a serious introductory math series for preschoolers that embodies beautiful math, joyful math, critical thinking math, and everyday life math. By combining numbers and shapes, this workbook simultaneously nurtures abstract, logical thinking and intuitive, sensory thinking. Mathematics is the study of numbers and space. For preschoolers who think and understand through the shapes of objects, a math education method that combines shapes and numbers allows them to experience the essentially abstract world of mathematics in a sensory and concrete way, nurturing their potential for math and increasing their interest in it. [Workbook Composition] A total of 6 books, with 2 books for each age group (ages 5-7). [Recommended Ages] - Saenggakhaneun Yua Suhak 1A: Serious math introduction for preschoolers (ages 4-6) - Saenggakhaneun Yua Suhak 1B: Serious math introduction for preschoolers (ages 4-6) - Saenggakhaneun Yua Suhak 2A: Serious math introduction for preschoolers (ages 5-7) - Saenggakhaneun Yua Suhak 2B: Serious math introduction for preschoolers (ages 5-7) - Saenggakhaneun Yua Suhak 3A: Serious math introduction for preschoolers (ages 6-8) - Saenggakhaneun Yua Suhak 3B: Serious math introduction for preschoolers (ages 6-8)