Research shows that students can have greater success in their studies when the information they learn is connected to key concepts. The Australian Curriculum: Science has identified nine key science concepts or big ideas that are developed through the curriculum content. It is expected that by the end of Year 10, all students will have an understanding of these big ideas. Each chapter in the Oxford Big Ideas Science series is engineered to build understanding of these big ideas. The big ideas of science are: Biological sciences - Diversity and evolution; interdependence; structure and function. Chemical sciences - Properties and structure; interaction and change. Earth and space sciences - Systems in space; dynamic earth. Physical sciences - Forces and motion; energy and its transformations.