V.
Animals and Energy
Lesson 1: Composition and Digestion of Living Things
Lecture 2 Circulation
Lesson 3 Breathing
Lesson 4 Excretion

Ⅵ.
properties of matter
Lecture 05: Properties of Materials (1)
Lecture 6: Properties of Materials (2)
Lecture 7 Separation of Mixtures (1)
Lesson 8 Separation of Mixtures (2)

Ⅶ.
Hydrosphere and ocean circulation
Lecture 9: Distribution of Water Rights and the Value of Water
10 Characteristics of Seawater
Lesson 11: Ocean currents and tidal phenomena around our country

Ⅷ.
Heat and Our Life
Lesson 12: Temperature and Heat Transfer, Thermal Equilibrium
Lesson 13: Specific heat and thermal expansion

[Book within a Book] Exam Preparation

[Special Edition] Correct Answers and Substantial Solutions

[Concept Learning] Understanding the Core Concepts of the Textbook
1.
Concept Reinforcement Learning: You can perfectly complete a concept by composing concepts and problems in a 1:1 ratio.
- The textbook's core concepts are organized with various pictures and materials for easy understanding.
- You can focus on learning key concepts and explorations with exploration, data, and concept magnifiers.
- You can immediately check whether you have accurately understood what you have learned by solving problems.

2.
Final Study: You can solidify your skills with final questions.
- You can comprehensively conclude your learning by lecture with a variety of practical problems that are sure to appear on the exam, as well as difficult and descriptive problems with differentiating power.
- Only the key concepts for each chapter are selected and organized at a glance, and you can evaluate your skills with the unit summary questions.

[Exam Preparation] Developing a Practical Sense for Each Type of Exam
1.
River-by-river problems
- You can check the key concepts by filling in the blanks in the key summary for each lecture.
- You can focus on practicing problems that strengthen your calculation skills, strengthen your research materials, and easily-mistakeable types with traps by class.
- Two sets of questions are provided per lecture to match the scope of the school exam, allowing you to prepare for the exam.

2.
Problems by chapter
- You can prepare for school exams by providing predicted school exam questions for each unit.
- You can check your skills by solving problems of similar type and difficulty level to actual school exams.

[Correct Answers] Learn on your own with detailed explanations.
- Contains Olli's own know-how, such as data analysis, integrated problem analysis, and concept addition.
- We have provided friendly solutions to help you easily understand the correct and incorrect answers through detailed explanations and avoidance of incorrect answers.