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Textbook Solutions
View detailed solutions for every textbook exercise from grade 1-12
Practice
Do exercises by chapter and type. Auto-grading included
Exam Practice
Diverse exam bank, take mock tests and see results instantly
ClassBk AI
Ask questions anytime, AI explains step by step
Thinking Games
30+ games for logic, math and language skills
Forum
Ask questions and discuss with the student community
Frequently Asked Questions
Is Class Bk free?
Yes. Most features are free: textbooks, exercises, thinking games, forum. Some advanced features like ClassBk AI have daily free usage limits.
How do I create an account?
Click "Sign Up" in the top right corner, enter your email and password. Confirm your email and you're done. No credit card needed.
What grades does Class Bk cover?
Class Bk covers the full curriculum from grade 1 to 12, including all 3 textbook sets used in Vietnam.
How does the ClassBk AI work?
Send a question or photo of your homework, the AI will analyze and explain step by step. It guides you to find the answer yourself rather than giving it directly.
I'm a teacher, how do I create a class?
Sign up, go to Dashboard → Class Management → Create New Class. Invite students with a class code. See the "For Teachers" page for more details.
My child is under 13, is it safe?
Content is moderated and age-appropriate. Parents use the same account as their child to track learning progress.
What age group are thinking games for?
Games are designed for students aged 5-15, with difficulty levels from easy to hard. Every game has a "pressure-free" mode — wrong answers are never punished.
How do I contact support?
Join our Zalo support group for the fastest response, or use the contact form on the Contact page.
Still need help?
Join our Zalo group for the fastest support from the Class Bk team.
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