Unit 1~5

1 Laughing is good for you
2 Different types of numbers
3 Is chewing bones good for dogs?
4 Mth skills at wdrk
5 The tomatina festval

Unit 6~10

6 Poalr bears in the arctic
7 Claude monet
8 Wolfgang amadeus mozart
9 The statue of liberty
10 The lizard's tail

Unit 11~15

11 Many kinds of houses
12 3D films with special glasses
13 Patients must not move
14 Have good fat
15 The musical cat

Unit 16~20

16 Flying in Flocks
17 Table manners
18 Animals move in different ways
19 The great wall of china
20 Why people fart