النحو الواضح is a free book for Android users in the Education & Reference category. The book is written in Arabic by Ali Garem and Mustafa Amin. It is a comprehensive Arabic grammar book that focuses on teaching children about the Arabic language rules. The authors have used a modern style to make it easier for children to understand the grammatical rules. The book contains numerous examples that help children understand the concept of grammar better.

The authors have taken a deductive approach to teaching grammar, which is proven to have a significant impact on children's learning. The book covers various topics such as nouns, verbs, adjectives, tenses, and more. It is an excellent resource for children who are learning Arabic as their first language or for those who want to improve their Arabic grammar skills. Overall, النحو الواضح is a well-written and informative book that is easy to understand and follow.