Happy Home Education

Free Week 12 GCSE/iGCSE Biology lesson: gas exchange in plants, a stomata leaf-peel practical, and the century-long puzzle of how trees pull water skyward.

Free Week 11 GCSE/iGCSE Biology lesson: aerobic and anaerobic respiration, an exercise/pulse-rate practical, and the phlogiston myth that fooled science for a century.

Free Week 10 GCSE/iGCSE Biology lesson: human digestion and enzymes, a food-testing practical, and the fistula patient who let one doctor watch digestion happen live.

Free Week 9 GCSE/iGCSE Biology lesson: photosynthesis, limiting factors, a pondweed practical, and the 17th-century willow tree experiment that got it half right.

Free Week 8 GCSE/iGCSE Biology lesson: diffusion, osmosis and active transport, with videos, a potato osmosis practical, and a science-history mystery.

Free GCSE/iGCSE Biology Unit 1 assessment: 20 questions with mark scheme, covering cell biology, microscopy, bacteria, viruses & stem cells (Weeks 1–6).