不是直接告诉答案，而是陪孩子追问：材料为什么适合或不适合某种用途？
Maisy Cleans Up: (Maisy the Mouse's Cleaning Adventure - A Picture Book on Helping & Friendship for Toddlers, Preschoolers, and Kids Ages 3-7)
Time for Kids（Grade 5&6）
Wild
Scientific American
How a Seed Grows (Let's-Read-and-Find-Out Science 1)
The Return of Ellie Black: A Novel (Chelsey Calhoun)
