Living things and their environmentEnvironment and living thingsCaring for the environmentThe weatherMaterial propertiesRocks and their usesNatural and man-made materialsMaterial changesChanging shapeChanges caused by heating and coolingMaterials in waterElectricityCircuit componentsSwitchesLight and darkLight sourcesLight and darkShadowsThe earth and beyondShadows and the sunDay and nightGlossary.