About the Author and Preface
Composition and Features
How to use the textbook recommended by the author

Ⅰ Numbers and Operations
01 Mixed calculations of natural numbers
02 Arithmetic operations on fractions
03 Divisors and Multiples
● Ending the concept
○ Concept test

Ⅱ Regularity
01 Finding the Rules
02 Rules and Responses
03 Ratio and ratio
04 Proportionality and Proportional Distribution
● Ending the concept
○ Concept test

Ⅲ Data and Possibilities
01 Various graphs
02 Average and Probability
● Ending the concept
○ Concept test

Ⅳ Shapes and Measurement
01 Basic Shapes
02 Plane Figures
03 Measurement of plane figures
04 Three-dimensional figures and their measurement
● Ending the concept
○ Concept test

Appendix_ Answers and Explanations

The concept summary is completed in four stages of 『Elementary Math in One Book』.

1) Concept building
You can study basic concepts with easy-to-understand examples and explanations, and practice applying them by solving verification problems.
The content that is important in elementary mathematics and highly relevant to secondary school is described mainly based on textbook content.
2) Broadening the concept
You can expand the concepts by covering applied concepts that go beyond basic concepts and contents related to secondary mathematics.

3) End the concept
You can comprehensively test the concepts learned in each unit to ensure that you have understood them.

4) Concept testing
You can check yourself by organizing what you have learned on a blank sheet of paper without a set answer key.