Life and living and structures. Plants and animals on earth -- Animal skeletons -- Skeletons as structures -- Food chains -- Life cycles -- Matter and materials and processing. Metals and non-metals -- Uses of metals -- Processing materials -- Processed materials -- Energy and change and systems and control. Stored energy in fuels -- Energy and electricity -- Energy and movement -- Systems for moving things -- Planet earth and beyond and systems and control. Planet earth -- The surface of the earth -- Sedimentary rocks -- Fossils.