当别的书还在教认字，这本已经带娃认识了全世界的雨林。
National Geographic Kids
上高地の自然誌: 地形の変化と河畔林の動態・保全
Time for Kids（Grade 5&6）
Can You Make a Toaster Out of Plastic? (Material Choices)
What Was the Wild West?
National Geographic
