Ⅰ.
Change and diversity

1 Environmental Change and Biodiversity
Lecture 1: Environmental and Biological Changes in the Geological Era
Lecture 2: Evolution of Living Things
Lecture 3: Biodiversity and Conservation

2 Chemical changes
Lecture 4_Oxidation and Reduction
Lesson 5: Acids and Bases
Lesson 6: Absorption and Release of Energy

Ⅱ.
Environment and Energy

1 Ecosystem and Environment
Lecture 7_Biology and the Environment
Lecture 8_Ecosystem Balance
Lecture 9_Ecosystem Balance

2 Energy
Lecture 10: Solar Energy and Power Generation
Lecture 11: Energy Efficiency and Renewable Energy

Ⅲ.
Science and Future Society

Lecture 12: Science and Future Society

[Exam Preparation]
- Check the concept by class
- Check your skills by grade level

[Special Edition] Correct Answers and Substantial Solutions

[Concept Learning]

· Understand essential core concepts from textbooks
- The core content of the textbook is organized in an easy-to-understand manner using various pictures and materials.
- We have organized the material pick and exploration pick corners to select important materials and explorations for focused learning.
- To help you understand the concepts, we have included memorization tips and detailed, supplementary explanations at the right places.
- Difficult terms are presented with Chinese characters or English explanations to make them easy to understand.

· Explore textbooks and analyze materials
- We have selected important research topics and presented them in the form of process, results, and summary along with photographic materials, and have created confirmation questions to check whether the research activities have been understood.
- We have provided detailed explanations of difficult-to-understand material learned in the concept organization, and created confirmation problems that allow you to immediately confirm key concepts.

· Basic solid problem
- It consists of fill-in-the-blank questions, short answer questions, true or false questions, and line connection questions by topic for concept organization.
- It is composed of various types of easy problems so that you can quickly check your level of understanding of the concept.

· Problems that improve your skills
- We have compiled a variety of practical problems to help you review important concepts.

- We have created a separate set of descriptive questions to help you prepare for school descriptive exams.

· Summary of key points of the intermediate course
- We have summarized the key contents of each section so that you can quickly check them.

- It is structured so that you can organize important concepts by writing them down yourself.

· Intermediate level practice problems
- We have composed descriptive questions along with various practical problems that allow you to review important concepts for each unit.

· Problems to prepare for the middle school entrance exam
- You can check the trends of previous exam questions and try solving CSAT questions in advance by presenting CSAT preparation questions using previous CSAT questions.

· Grand finale
- Key data for each chapter is organized into tables and diagrams for easy understanding at a glance.
- You can finish your studies by completing questions that frequently appear on each unit and prepare for the actual exam.

[Exam Preparation]

· Check the concept
- You can quickly review important concepts for each lecture and prepare for note tests.

· Check your skills
- To help you prepare for school exams, we have provided expected school exam questions by difficulty level and structured them into descriptive questions.

[ Correct answer / Substantial explanation ]

- We provide detailed and friendly explanations to make it easy to understand.
- Includes avoiding incorrect answers, adding concepts, analyzing data, etc.