Happy Earth is a topic-based course with a communicative emphasis that builds on previous language development. By drawing on a wide range of factual information, it develops the children's language skills along with their general knowledge.
Unit 1 My world
Unit 2 Lifestyles
Unit 3 Time off
Unit 4 Adventure
Unit 5 Living with nature
Unit 6 Communicate
Unit 7 Mysteries
Unit 8 Truth and fiction