Use hash marks to designate materials mentioned more than once. Students identify the natural resource from which each material is derived. Go down the list on the board and help students identify the natural resource from which each material is derived. Aluminum, for example, comes from bauxite. Some natural resources can be renewed and others cannot.
Students identify which natural resources are renewable.
Review some examples of renewable natural resources. See Natural Resources . Discuss the items students brought to school. Students identify materials that can be recycled. Have students look at the materials listed on the board and decide which materials can be recycled and which cannot.