Closing the Loop (CTL) is a science curriculum designed to introduce students to integrated waste management through awareness. This document presents five lesson plans focusing on developing an understanding of natural resources, solid wastes, conservation, and the life of landfills. Contents include: (1) "What Are Natural Resources?"; (2) "Making Recycled Paper by Hand"; (3) "The Basic of Vermicomposting"; (4) "Away to the Landfill"; and (5) "Packaging: What a Waste!" (YDS)