Lesson 1: वर्ण और ध्वनि (Varn aur Dhvani)
In the 6th standard Hindi NCERT textbook, the first lesson is about "वर्ण और ध्वनि" which means "Alphabet and Sound".

वर्ण (Varn)
- The lesson begins by introducing the concept of "वर्ण" which are the building blocks of language.
- It explains how each letter represents a specific sound and how different combinations of letters create different sounds.
- Students are taught about the Hindi alphabet and how to pronounce each letter correctly.

ध्वनि (Dhvani)
- The lesson then moves on to "ध्वनि" which means sound.
- It explains the importance of correct pronunciation in language learning.
- Students are encouraged to practice pronouncing words correctly to improve their language skills.

व्याकरण (Vyakaran)
- The lesson also touches upon the basics of grammar by introducing students to the concept of "व्याकरण".
- Students learn about the different parts of speech and how they are used in forming sentences.
- They are taught simple rules of grammar to help them construct sentences correctly.

अभ्यास (Abhyas)
- The lesson includes exercises and activities to help students practice what they have learned.
- These exercises are designed to reinforce the concepts of वर्ण, ध्वनि, and व्याकरण.
- Students are encouraged to read aloud, write sentences, and participate in class discussions to improve their language skills.
Overall, this lesson aims to lay a strong foundation in Hindi language learning by focusing on the basics of alphabet, sound, and grammar. It is an essential starting point for students to build their language skills and develop fluency in Hindi.