Year 8 · Autumn Second Half
Biology
4 lessons from 2 units.
Unit B4 · lesson 5 of 5
You breathe about twenty thousand times a day without deciding to. This unit is about what the air is for, how it gets in and out when your lungs contain no muscle at all, and why the same problem has the same solution in a lung and in a leaf.
Unit B5 · lessons 1 to 3 of 8
Every living thing you have ever seen came from another living thing. This unit is about how — in humans, and in the flowering plants that solved the same problem without being able to move.
- 05Stomata and gas exchange in plantsContrastA plant in a sealed jar changes the air around it, and light changes how. What is going on inside the leaf?Open this lesson
- 01Human reproductive systemsSystemTwo organ systems share one purpose. Learning the names is the easy part; the useful question is what each structure is for.Open this lesson
- 02Gametes and fertilisationProcessA sperm cell and an egg cell fuse to make one new cell. What does each one bring?Open this lesson
- 03The menstrual cycleProcessTwo organs, one repeating month. An egg matures in an ovary while a lining is built in the uterus — and the two are timed against each other.Open this lesson
Back to all three sciences this half term The whole KS3 Biology course