This resource was designed to introduce the structure of DNA (nucleotides, deoxyribose, phosphate, and nitrogen bases, twisted ladder/double helix) to middle school students. Students will read, answer a few questions, and drag and drop labels, as well as nucleotides, into proper places, through which they will discover and learn about the basic building blocks and how they bond in order to form DNA. There are 12 student "work" slides. They are ALL shown in the preview. Please see preview before