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Center of Mass Online – Competition Training Platform, is an online learning platform tailored for junior and senior high school students nationwide. We understand the challenges and opportunities of competition learning, therefore, we are committed to developing high-quality synchronous courses covering multiple core subjects such as Physics, Mathematics, Biology, and Chemistry. Center of Mass Online not only provides comprehensive learning materials and tutoring courses for students but also integrates premium competition resources accumulated offline over 8 years, presented in an online format to meet students' learning needs at different stages. In addition, we also offer courses designed for students with weak foundational knowledge, guiding them comprehensively from selecting subjects to mastering the competition system, divided into Introductory Rounds, Prep Rounds, Novice Rounds, and Basic Rounds.

To better serve students, Center of Mass Online now offers free learning tablets named Tianji, Yuheng, Kaiyang, and more. These tablets not only possess strong learning functions but can also be your reliable assistant on the competition journey. They will help you understand knowledge better, enhance problem-solving abilities, and showcase your skills in competitions.

Every day we release a carefully planned question involving subjects from Mathematics, Physics, Chemistry, and Biology competitions. By participating, you can earn protons and receive tailored learning materials specially designed for competition students to deepen subject knowledge and strengthen competition skills. Join the "Daily Question" section now and compete with students nationwide to become a quiz expert!

Exclusive Online Features:

1. Multi-disciplinary Competition Resources: Physics, Biology, Chemistry, and Mathematics disciplines are now available online. Weekly free competition lectures help students delve into each subject's competition knowledge and skills.
2. Knowledge Point Videos: Renowned teachers like Cai Zixing and Sun Peng provide in-depth explanations of core knowledge points in short video formats, making complex knowledge easy to understand and helping students grasp competition essentials quickly.
3. Center of Mass Live Courses: Modular design of course outlines meets the study needs of students at different stages. We offer special live courses like Problem-solving Classes and Pre-exam Sprint Sessions to help students tackle challenging competition problems.
4. Free Question Bank: Students can practice an unlimited number of classic questions. Additionally, they can check their practice volume and accuracy at any time to better assess their learning progress.
5. Online Testing: The highly acclaimed U/G series mock exams widely participated by national competition students assist in evaluating their learning outcomes and levels.
6. Material Downloads: Comprehensive competition materials are provided including handouts, practice books, exam papers & solutions, mind maps, exclusive knowledge manuals, etc., facilitating students to download for learning anytime.
Customer Service Phone: 400-0111037Working Hours: 10:00-19:00Center of Mass Official Website: https://www.eduzhixin.com