Ⅰ Number

1. Number of numbers and digits
2 Expression representing the size of a number
3 Make numbers with number cards
4 Comparison of the size of numbers with hidden numbers
5. Make the number 5
6.
Number that meets the conditions

Ⅱ Puzzle

1 Nonogram
2 Bridge Puzzle
3 Sudoku
4 Bomb Defuse Puzzles
5 Gakuro Puzzle
6.
Change Puzzle

Ⅲ Measurement

1 unit length
2 Broken Clock
3 Compare weights
4 Measurable length
5 Measurable weights
6.
Clock reflected in the mirror

1) Composed of representative topics of creative thinking skills at each stage
We've packed each stage with representative topics of creative thinking, allowing you to approach the types through a variety of approaches and explore them in depth.

2) Understanding basic concepts and developing thinking skills by type
We have presented representative types for each major theme of creative thinking to help you understand the principles and systematically approach problems by following the flow of thought.
We have organized the important core principles learned in each topic into four topics by area so that you can understand and explore the principles of the concept step by step, and you can learn the types through confirmation learning.
We have developed integrated thinking skills through integrated problems.

3) Fast grading and friendly and informative explanations
Correct answers and correct solutions allow for quick grading, and we provide friendly and detailed solutions so that children can properly understand the problems they got wrong and study effectively on their own without missing important information.

4) Provision of diagnostic, formative, and summative assessments
The diagnostic assessment provided through the Mathtian website (http://www.mathtian.com) helps in selecting the appropriate textbook level, and after completing learning by area, you can check your achievement level through formative assessment by area, and after completing learning by textbook, you can check your achievement level through summative assessment.

5) Provision of online services
Naver Cafe (http://cafe.naver.com/factos.cafe) continuously provides various creative thinking materials and learning information through early childhood math learning methods, elementary school math learning methods, gifted education center past questions, expected questions, video lectures, Q&A, etc.