Toán Lớp 2 is a free educational app developed by Tri Tuệ Việt for Android users. The app is designed to help parents teach their kids the math curriculum for second grade in Vietnam. It simulates the lessons from the textbook series "Kết Nối Tri Thức" and provides a variety of interesting exercises to enhance learning.

The app's features include displaying the content of each lesson in the textbook, summarizing the entire curriculum in Vietnamese and English, and providing many fun and challenging exercises to increase the student's interest in math. The app also tracks progress and rewards students with praise when they complete exercises. The app has a lively interface with vivid images that make learning quick and easy.

Toán Lớp 2 follows the curriculum of the Ministry of Education's "Kết Nối Tri Thức" textbook series and helps students practice and review the concepts they have learned. With a variety of exercises that foster creativity and critical thinking, this app is a valuable tool for any student looking to improve their math skills. Please note that while the app is comprehensive, it cannot replace the textbook series entirely.

Overall, Toán Lớp 2 is a great app for parents looking to help their kids with math. The app is easy to use, engaging, and effective.