The principle focus of science teaching in Grade 5 is to enable students to develop a deeper understanding of a wide range of scientific ideas. Students achieve this through exploring and talking about their ideas; asking their own questions about scientific phenomena; and analysing functions, relationships and interactions more systematically. In Grade 5, students encounter more abstract ideas and begin to recognise how these ideas help them to understand and predict how the world operates. Students also begin to recognise that scientific ideas change and develop over time. Students are supported in developing the ability to select the most appropriate ways to answer science questions using different types of scientific enquiry, including observing changes over different periods of time, noticing patterns, grouping and classifying things, carrying out comparative and fair tests and finding things out using a wide range of secondary sources of information. Students begin to draw conclusions based on their data and observations, use evidence to justify their ideas, and use their scientific knowledge and understanding to explain their findings. A portion of the learning about science in Grade 5 is done through the use of first-hand practical experiences; however, there is a strong use of secondary sources, such as books, photographs and videos to help support the learning and understanding of science. Students are taught to ‘work scientifically’ in all aspects of the subject.