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 respires every second of its life, exactly like you. In daylight it also does something else, and the two run at once.Open this lesson
- 01Human reproductive systemsSystemTwo organ systems with one shared purpose and almost nothing else in common. Learning the names is the easy part; the useful question is what each structure is for.Open this lesson
- 02Gametes and fertilisationProcessTwo cells fuse and become one. Each brought half a set of instructions; neither brought anything like half the material.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