Summary Extract DNA from cheek cells, then do a coding puzzle to understand how the huge variety of living things can arise from the four-letter DNA code. Science content Biology: Features, Adaptations of Living Things (K, 1, 3, 7) Biology: Evolution, Natural Selection (7) Chemistry: Atoms, Molecules (3-7) Activities in this lesson DNA DNA code puzzle Materials materials listed in the activities Procedure DNA extraction activity. While students are waiting for their DNA to be transferred to the little tube, give them at least one coding activity. Notes Older Science Club students and Tyee students combined this with looking at cheek cells. Grades taught Gr K Gr 1 Gr 2 Gr 3 Gr 4 Gr 5 Gr 6 Gr 7
