2

Hot and Dry! Desert

4

Eire of the Desert

4

Eire of the Desert

4

Desert

4

Maddy's Oregon Diary

4

Maddy's Arizona Diary

4

Chip's Tips on Nigeria

4

Chip's Tips on Egypt

4

Patsy and Paul at Uluru in Australia

4

Maddy's Utah Diary

3

Mars

4

Chip's Tips on Chile

4

Chip's Tips on Ghana

2

Ecosystems

4

Maddy's Nevada Diary

3

Continents of the World

4

Maddy's New Mexico Diary

4

Sossusvlei Dunes, Namibia

4

Chip's Tips on Qatar

4

Chip's Tips on South Africa

4

Timbuktu, Mali

4

Maddy's California Diary

4

Ecosystems Level 4

3

Marco Polo

4

Chip's Tips on India

4

Hoover Dam

4

Chip's Tips on Mexico

3

David Livingstone

3

The Winklers' Holiday on Zoo Lovers Day

4

Chip's Tips on Yemen