Unit 1 How tall are you? Unit 2 Last weekend Unit 3 Where did you go? Unit 4 Then and now Recycle Mike's happy days Appendix 1: Songs in each unit Appendix 2: Words in each unit Appendix 3: Vocabulary Appendix 4: Useful expressions Appendix 5: Proverbs Appendix 6: Short plays Appendix 7: Irregular verbs Appendix 8: English pronunciation patterns