Use beads, pipe cleaners, and paper clips to model all four types of molecules studied in a traditional high school biology biochemistry unit. Students will model monomers, polymers, carbohydrates, lipids, proteins, and nucleic acids (DNA and RNA). This is a tough unit to teach. Chemical structures, monomers, and polymers are so abstract! You will never teach biochemistry without these activities again!My students love my carbohydrate, protein, and lipid structures activities. Performing th