Dau Lem adventure diary is a math learning application that helps children love and be better at Math. Designed as an interactive cartoon, which is very suitable for children in grade 1. Knowledge is absorbed completely naturally as well as stimulates creativity for children. 2nd Grade Math Content *** The content has been updated according to the latest General Education program. Dau Lem stepped into a large area. There were fruit trees, forests, ponds, ... and on a mountain top in the dista