Target: contrast lysosome, vacuole and smooth ER roles without saying one organelle is exclusive to all plants or animals. Prepare: Card C and organelle jobs sheet.
- Launch · 2 min. Put “storage,” “water balance,” “recycling,” “lipid synthesis” on the board; ask if one word can explain every cell's internal compartments.
- Model · 4 min. Match a many-animal-cell lysosome to breakdown/recycling, a large plant central vacuole to water balance and smooth ER to lipid synthesis. Explain that roles vary by cell and plant lytic vacuoles can perform related breakdown.
- Guided reading · 5 min. Use a fictional plant storage-cell prompt and a fictional animal-cell prompt. Do not infer a clinical condition or a measured organelle count from the cartoons.
- Practice route · 7 min. Choose Day 7 route; sort three structure/function pairs and write one “not every cell” qualifier.
- Audit · 4 min. Peer tests “animal cells cannot have vacuoles” and “plant cells cannot recycle”; learner corrects both with Card C.
- Exit · 3 min. “Is smooth ER rough because it contains ribosomes?” Key: no; surface ribosomes characterise rough ER.