Description 1. Numbers up to 9 2. Various Shapes 3. Addition and Subtraction 4. Comparing 5. Numbers up to 50 ▶ Main Workbook 1. Understanding Textbook Concepts The core textbook concepts are explained in detail, and practice problems are designed to help students fully understand each concept. Supplementary explanations are included next to problems so students can review and reinforce concepts while solving them, and related concepts from previous units or grades are connected to build continuity in learning. 2. Building Basic Skills Focused practice problems for each concept help strengthen fundamentals and prepare students to build real skills. The book includes new-style problems reflecting the latest curriculum trends, including new-style written-response questions, to help solidify a strong foundation. 3. Developing Applied Thinking True math skills come from solving advanced problems that build problem-solving ability. Carefully selected advanced problem types are provided for each unit, allowing students to practice similar advanced problems repeatedly to fully master their skills. 4. Unit Assessments To help wrap up each unit, problems ranging from basic to advanced levels are provided in two rounds (Test 1 and Test 2). Since these include questions frequently seen on school exams, they can be used to prepare for regular assessments and school tests. ▶ Skill-Building Supplement - Step-by-step writing practice helps students prepare for written-response questions. - A second round of unit assessment problems (Test 1 and Test 2) allows students to review and check their understanding once more.