About
Cùng Học Toán is a mathematics learning project that encourages careful reasoning and independent thinking. Its free lesson library brings together explanations, worked examples and practice so that learners can study at their own pace.
Free resources for independent study
The free learning library includes early mathematics before Grade 1, resources for Grades 1–9 and high-school mathematics topics. Early mathematics and Grades 1–9 resources are currently in Vietnamese. High-school lessons are available in Vietnamese and English; not every lesson has both versions. Explore resources for all levels in the Vietnamese learning library.
You can read the published lessons directly. You do not need to enroll in a paid class to use the free library. Explore the English mathematics lessons and choose a subject or topic that matches your needs.
How to use the lessons
- Read the learning goals and prerequisites. Review the background knowledge you need before starting.
- Work through the explanation and examples, paying attention to the conditions used in each argument.
- Try the practice independently before opening the answers and hints.
- Compare your reasoning with the solutions, review common mistakes and use the related lesson links to continue studying.
Teaching and research team
Our teaching team brings together educators from Ho Chi Minh City University of Education, including doctoral and master’s degree holders and bachelor’s graduates with an Excellent graduation classification.
Alongside teaching, the educators work together in a group conducting in-depth mathematical research. This connection between teaching and research guides the development of clear, accurate learning materials, with an emphasis on sound reasoning, strong foundations and independent study.
Optional online classes
If you would like guidance from a teacher, you can contact us about live online classes via Google Meet at all educational levels, in Vietnamese or English. Classes have no more than 10 learners and meet twice a week for 90 minutes per session. This separate option requires registration and tuition.
We discuss whether a suitable class can be arranged, including its content, teaching language, schedule and tuition-related arrangements. The centre confirms enrollment by email or phone/Zalo after both sides have agreed the details. Tuition is discussed privately. Sending an inquiry does not reserve a place or confirm a class.
Get in touch
Visit the contact page or email cunghoctoan.net@gmail.com.
For a class inquiry, tell us the learner’s level, goals and convenient times; include your time zone if you are outside Vietnam. For a younger learner, please use the parent or guardian’s contact details. For a question about a lesson, include its title or web address.