Set 1 自然与天文的奥秘 (10 Books)                                              
Secret of Four Seasons 四季的奥秘
Earth, Sun and Moon 地球、太阳和月亮
Secret of Weather 天气的奥秘
Stars and Planets 恒星和行星
Amazing Animals 了不起的动物
Travel Through the Age of Dinosaurs 穿越恐龙时代
Cat: Listen to the Kingdom of the Elf Whale at Night 猫：聆听夜晚的精灵鲸的王国
Kingdom of Whales 鲸的王国
Roaming the Rabbit Kingdom 漫游兔子王国
Dog: Man’s Friend 狗：人类的朋友