There are a total of 22 chapters in the EVS (Environmental Studies) textbook for Class 4. Here is a detailed breakdown of the chapters:

Chapter 1: Going to School
- This chapter introduces the concept of school and the importance of education.

Chapter 2: Ear to Ear
- This chapter focuses on the sense of hearing and how we use our ears to communicate and understand sounds.

Chapter 3: A Day with Nandu
- In this chapter, children learn about the daily routine of a boy named Nandu and his activities throughout the day.

Chapter 4: The Story of Amrita
- This chapter narrates the story of Amrita, a young girl who lives in a village and explores her daily life and surroundings.

Chapter 5: Anita and the Honeybees
- This chapter revolves around Anita and her encounter with honeybees. It highlights the importance of bees in pollination and the production of honey.

Chapter 6: Omana's Journey
- Omana's Journey discusses the migration of birds and the challenges they face during their journey.

Chapter 7: From the Window
- This chapter explores the view outside a window, encouraging children to observe and appreciate nature.

Chapter 8: Reaching Grandmother's House
- The chapter follows a child's journey to their grandmother's house and highlights the different modes of transportation.

Chapter 9: Changing Families
- This chapter explores the concept of families and how they can change over time.

Chapter 10: Hu Tu Tu, Hu Tu Tu
- Hu Tu Tu, Hu Tu Tu introduces traditional games and their significance in Indian culture.

Chapter 11: The Valley of Flowers
- This chapter takes children on a virtual tour of the Valley of Flowers in Uttarakhand, India, showcasing its natural beauty and biodiversity.

Chapter 12: Changing Times
- Changing Times focuses on the changes that occur in nature during different seasons and the impact of human activities.

Chapter 13: A River's Tale
- This chapter narrates the journey of a river, explaining its importance for various purposes and the need to protect water bodies.

Chapter 14: Basva's Farm
- Basva's Farm introduces children to sustainable farming practices and the importance of organic farming.

Chapter 15: From Market to Home
- This chapter explores the journey of food from the market to our homes, emphasizing the importance of nutritious food.

Chapter 16: A Busy Month
- A Busy Month highlights the various festivals celebrated in different parts of India during a particular month.

Chapter 17: Nandita in Mumbai
- This chapter follows Nandita's visit to Mumbai and explores the city's diverse culture and landmarks.

Chapter 18: Too Much Water, Too Little Water
- Too Much Water, Too Little Water discusses the importance of water conservation and the impact of water scarcity.

Chapter 19: Abdul in the Garden
- This chapter focuses on the concept of gardening and the joy of growing plants.

Chapter 20: Eating Together
- Eating Together highlights the significance