Give students a focused way to practice nucleotide structure before DNA lessons get more complex 🧬 This free 20-page Biology task card set keeps the skill narrow: sugar, phosphate group, nitrogen base, A/T/C/G base letters, and reading a simple labeled nucleotide model. Students label diagrams, sort vocabulary, compare drawings, correct mislabeled models, justify answers, and finish with a mini quiz plus reflection. The pages are roomy, visual, and easy to use for stations, warm-ups, partner re