TABLE OF CONTENTS 1
Concept Ⅰ 1
1．The Day the Indians Cried 2
2．Another Kind of People 4
3．The Changing Tribe 7
4．The Fussy Bees 9
5．A New Kind of Farm 12
6．The Grass That Is Painted Green 14
7．Weather the Way We Want It 17
8．The Magic Sticks 19
9．Black Gold 22
10．Beavers by Parachute 24
11．The Ugly Shores 27
12．The Bug War 29
13．The Town That Saved Its Water 32
14．Land of the Past 34
15．Clinton's Ditch 36
16．Gifts for a River 38
17．New Face for Japan 41
18．The City That Grew in a Lake 43
19．The King Would Not Listen 45
20．The Salt March 48
21．The Day King John Could Not Forget 50
22．Spin-Off and You 53
23．The Engine for Space 55
24．The New Way to Eat 58
The Man Who Saved the Moon 60
Concept Ⅱ 64
25．The Puppet Teachers 65
26．They Never Left Pitcairn 67
27．The Strangers 69
28．Not Made for Swimming 72
29．The Animal That Keeps to Itself 75
30．Traveler's Friend 77
31．The Man with a Hammer 79
32．Buried Treasure 81
33．Call a Geologist 83
34．Feet Like Snowshoes 86
35．The Land of Dripping Water 88
36．Where the Grass Is Twelve Feet High 90
37．The Machine That Hatches Eggs 93
38．At Home in the Sky 95
39．A Day in May 98
40．Halfway Country 101
41．Have an Apple! 103
42．Four Million Cows 105
43．A Way to Remember 107
44．History on Strings 110
45．The Writing on Leaves 113
46．Only 26 Million Miles Away 116
47．The Plants on Mars 118
48．The Moon Suit 120
The Wise Father 122
Concept Ⅲ 128
49．Prizes for Maria 123
50．The Holy Grounds 131
51．From the Head of a Whale 134
52．Food for Tomorrow 136
53．New Uses for Old Plants 139
54．Two Plants in One 141
55．What's in a Rock？ 144
56．Mirrors from Volcanoes 146
57．Growing Rocks for Television 149
58．Fences That Bloom 151
59．Fish That Climb Ladders 153
60．The Brown Snow 156
61．Plant from the Sea 158
62．Who Has the Salt？ 160
63．For Rings and Roads 163
64．Beehive Houses 165
65．Houses on Stilts 167
66．Houses the Breezes Blow Through 169
67．The Daring People 172
68．Sea of Darkness 174
69．A Ship Called the Flyboat 177
70．A New Resource 179
71．Space Junk 182
72．Spacemen Without Space Suits 184
The Wonderful Hammer 186
Book C Answer Key 191