Respect Nature: Dina Helps Uncle Tree BookDina Helps Uncle Tree While watering her garden, Dina meets Uncle Tree who is very thirsty and unhappy. She discovers that Uncle Tree is tired because he's been working overtime to keep our air clean without much support. How will Dina Help Uncle Tree? VALUE & LIFE SKILL Caring for the Environment Concept of Air Pollution RECOMMENDED AGE 2 7 years 2 3 years: FOUNDATION OF VALUES This critical stage lays the foundation for introducing essential values.