It covers the three external Achievement Standards: Science 1.1 Demonstrate understanding of aspects of mechanics Science 1.5 Demonstrate understanding of aspects of acids and bases Science 1.9 Demonstrate understanding of biological ideas relating to genetic variation This workbook has very brief exam revision notes for end-of-year study, with examples and NCEA exam questions from 2020 and earlier years. Full answers with explanations and A, M and E grades are given. Use this workbook all year round or during Terms 3 and 4 to revise and practise exam questions.