"Concept Principle AI: Habits That Make Math Easy"
The #1 math reference book for middle and high school students: Concept Principle meets AI!

[Evaluation]
Complete Unit-by-Unit Assessment and Free Commentary
Evaluate the unit of your choice and receive unlimited, free access to detailed lectures and commentary.
Customized assessments tailored to your level accurately assess your skills and allow you to immediately address any gaps.
Experience complete explanations from expert instructors after the assessment, ensuring a thorough understanding of even the most difficult problems.

[Problem Notes]
Your Personalized Learning System
Save important problems to create your own problem notes.
Save problems for additional study at various difficulty levels, allowing you to master everything from basic concepts to advanced problems.
Target your weak points for efficient review.

[Ranking]
Enjoyable Math Competitions with Friends
Earn points and compete for the top rankings with your friends through various missions.
Fun missions like solving daily problems, achieving consecutive study days, and improving your correct answer rate will keep you motivated. The ranking system simultaneously stimulates a sense of accomplishment and competitiveness in learning.

[AI Past Questions]
Concept Principles AI predicts what will appear on the exam!
Enter your school and exam scope to download your school's predicted exam questions.
Enter your answers for automatic scoring and analysis of your weakest sections in one go!
Completely prepare for your final exam by solving unlimited weakest sections.

[Textbook Study]
22nd revised content update complete!
Discover Concept Principles and RPM, essential prerequisite textbooks for middle and high school students nationwide, on Concept Principles AI.
From concept lectures to calculation training and pattern learning! Anyone can master math by following the curriculum suggested by leading math experts.

[Problem Bank]
120,000 questions to boost your skills and confidence
The math curriculum for all grades, from 7th grade to 9th grade, all in one app!
Build your skills systematically by solving a variety of problems from your desired grade level and section. From easy true or false quizzes you can solve during your break to challenging problems adapted from past exams.

[Q&A & Study Group]
When studying alone is difficult, join a group!
Ask difficult questions and get explanations for easier ones on the Q&A board to sharpen your math skills.
In the study group, you can share problems and study tips with friends in real time.
Because studying together makes it longer and more enjoyable!

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