Description [1] Sangwigwon Shapes 960 Level P: 001~060, by Simath Math Research Institute / Simath. 'Sangwigwon Shapes 960' offers easy and enjoyable shape learning using a variety of materials, helping to build strong thinking skills. By connecting shapes with other math areas, it stimulates mathematical thinking and develops integrated reasoning skills, helping children excel in math. Sangwigwon Shapes 960 is an essential resource for advanced math learners. Issue 1: Position and Direction / Issue 2: Various Shapes (1) - Plane Figures / Issue 3: Various Shapes (2) - Solid Figures / Issue 4: Shape Puzzles / Answer Key [2] Sangwigwon Problem Solving 960 Level P: 001~060, by Simath Math Research Institute / Simath. 'Sangwigwon Problem Solving 960' helps children easily and interestingly learn key math concepts such as data, possibility, and patterns—areas where logical thinking is essential—while building their thinking skills. Through this, children develop balanced, integrated reasoning skills needed throughout the math curriculum, helping them excel in math. Sangwigwon Problem Solving 960 is an essential resource for advanced math learners. Issue 1: Exploring Attributes / Issue 2: Classifying / Issue 3: Finding Patterns / Issue 4: Organizing and Interpreting Data / Answer Key [3] Sangwigwon Measurement 960 Level P: 001~060, by Simath Math Research Institute / Simath. 'Sangwigwon Measurement 960' offers lively measurement learning using everyday materials, helping to build strong thinking skills. Going beyond calculation-focused measurement learning, it develops integrated reasoning skills by connecting different math areas and subjects, helping children excel in math. Sangwigwon Measurement 960 is an essential resource for advanced math learners. Issue 1: Length and Weight / Issue 2: Area, Volume, and Capacity / Issue 3: Time and Order / Issue 4: The World of Various Measurements / Answer Key