I.
Properties of matter
1.
Properties of matter
01.
Density and solubility
02.
Melting point and boiling point

2.
Separation of mixture
03.
Pure substances and mixtures
04.
Separation using the properties of materials

Ⅱ.
Changes in land rights
1.
Composition of the Earth
05.
Components of the Earth's crust and the structure of the geosphere

2.
The composition of perception
06.
Properties of minerals
07.
rocks that form the earth's crust
08.
Weathering and soil

3.
Changes in perception
09.
continental drift
10.
Earthquake and volcanic belts

Ⅲ.
Light and waves
1.
light
11.
Reflection and refraction of light
12.
mirrors and lenses
13.
Composition of color and light of objects

2.
wave
14.
Generation and transmission of waves
15.
Characteristics of sound

Ⅳ.
Composition of matter
1.
Elements and the periodic table
16.
Elements and compounds
17.
atom
18.
periodic table

2.
Changes of state and energy
19.
atoms and molecules
20.
ion

The core basic book 'Concept Pool Middle School Science 2-1' that easily explains concepts is structured as follows.

[Easy-to-understand concept book]
· 'Concept Reinforcement' thoroughly analyzes the basic content and exploration of seven middle school science textbooks.
· 3-step 'Skill Enhancement' designed to help you organize the basics after learning the concepts.
· 'Explore, Know, and Solve', an easy-to-understand guide to essential exploration.
· 'Skill Consolidation' consisting of frequently appearing questions from school exams
· 'Key Summary Notes + Unit Evaluation' to check your skills and prepare for school exams while completing each unit.

[Review book for when you want to review what you've learned]
· 'Check the Intermediate Unit Problems', which consists of carefully selected problems by difficulty and type.
· 'Challenge for Perfect Score in Each Unit', where you can solve problems for each unit right before the exam.
· 'Unit Short Answer/Descriptive Assessment' with enhanced short answer and descriptive questions to prepare for internal exams.

[Answer book]
· Detailed explanations for accurate answers and easy understanding
· 'Data Analysis' and 'Learn More' to help you remember things longer