当历史变成冒险，孩子会主动追问：后来发生了什么？
How a Seed Grows (Let's-Read-and-Find-Out Science 1)
Dinosaurs Before Dark (Magic Tree House, #1)
What Was the Age of Exploration?
Can You Make a Pillow Out of Glass? (Material Choices)
Magic Tree House Books 21-24 Boxed Set: Civil War on Sunday; Revolutionary War on Wednesday; Twister on Tuesday; Earthquake in the Early Morning
Time for Kids（Grade 5&6）
