"This book explores what happens in your brain when you feel sad, the chemicals your brain produces, and ways to manage sadness. STEM concepts cover aspects of psychology and neurology in simple terms, while social and emotional learning (SEL) concepts support the growth mindset. Grow with Goals and Try This! activities further reinforce the content. Vibrant, full-color photos and carefully leveled text engage young readers as they learn more about...

Hippo and Monkey are best, best, best friends and when the wise old Hippo dies, Monkey is very sad until Chameleon helps him remember the stories he and Hippo shared.