前言 3
推荐学习方法 4
每日检查表 8
Science 10
UNIT 01 Human Body 10
UNIT 02 North Pole 13
UNIT 03 Pine Tree 16
UNIT 04 Bird Nest 19
UNIT 05 Bee 22
UNIT 06 Body Temperature 25
UNIT 07 Fresh Water 28
UNIT 08 Magnet 31
UNIT 09 Elephant 34
UNIT 10 Skin 37
UNIT 11 Soil 40
UNIT 12 Gorilla 43
Social Studies 48
UNIT 13 Family's Special Day 48
UNIT 14 Home 51
UNIT 15 Government 54
UNIT 16 Continent 57
UNIT 17 Custom 60
UNIT 18 Healthy Food 63
UNIT 19 Natural Resource 66
UNIT 20 The People 69
UNIT 21 Christopher Columbus 72
UNIT 22 The War 75
UNIT 23 Slavery 78
UNIT 24 President 81
Math 86
UNIT 25 Addition 86
UNIT 26 Hexagon 89
UNIT 27 Calculator 92
UNIT 28 Inch 95
Art 100
UNIT 29 Canvas 100
UNIT 30 Craft 103
Music 108
UNIT 31 Lullaby 108
UNIT 32 Horn 111
Answers 115