This hands-on project introduces students to the design of DNA as they create a three-dimensional model of a double helix. Start by separating the class into 12 small groups and give each a packet with enough parts to build a segment of 6-paired DNA bases. Pieces are color coded, making it easy to identify molecules and the four nitrogen bases of adenine, thymine, cytosine, and guanine. Students can use these DNA models to study the design of molecules and how they are connected to each other. Instructions and reproducible student worksheets enhance the learning potential and introduce important concepts. Kit include 12 packets of model parts, each with enough materials to construct a segment of 6-paired bases, instructions, and reproducible student worksheets. Recommended for Elementary and up.