A级： 1
1．Please Pass the Grass 1
2．Smarter Than Most 4
3．Not a Minute Lost 7
4．Underground Fairyland 10
5．In a Nut Shell 13
6．Busy as a Bee 16
7．Pictures That Tell a Story 19
8．What Makes It Pop？ 22
9．Man s Best Friend 25
10．Something Different 28
11．The Happy Time 31
12．Talking Back 34
13．The Straw That Travels 37
14．Playing Possum 40
15．The Trees of Christmas 43
16．The Sea Horse 45
17．The Spider and the Fly 48
18．Dirty as a Pig 51
19．Water，Water Everywhere 54
20．On Guard 57
B级 61
1．Ho-Hum 61
2．House of Silk 63
3．Sand 66
4．Be on the Lookout 69
5．“Come，Sit，Stop，Stay，No” 72
6．By the Sea 75
7．Hop，Jump，Fly 78
8．A Funny Kind of Thanks 81
9．Sweet to Eat 84
10．Croaker 87
11．To Sea and Home Again 90
12．The Big Snap 93
13．Safe in His Shell 96
14．Builders at Work 99
15．A Big One 102
16．Talk，Talk，Talk 105
17．At Home on the lce 108
18．Monkey See，Monkey Do 111
19．Sharpshooter 114
20．Anything Will Do 117