Chromosomes, alleles, chromatids, genotype, phenotype, mitosis, meiosis, fertilization--this vocabulary can be overwhelming, confusing, and difficult for students to tie together. However, since these terms are commonplace in the high school biology classroom, and are the basis for understanding both DNA and heredity, students must understand these topics not only for state testing but for everyday applications, as well. As high school biology teachers with limited budgets, the authors were always on the lookout for inexpensive ways to teach DNA and heredity. They have tried pipe cleaners, flip books, coloring worksheets, and online lessons--but one of their best discoveries was made in the swimming pool. Brightly colored pool "noodles" make great chromosome models, and since they are seasonal in most places, they go on sale at the end of summer. The authors explain how they used these "noodles" to help students gain a greater appreciation of the interdependence of DNA and inherited traits. (Contains 6 figures and 1 online resource.)