AQA GCSE Biology (separates, triology and synergy): This SMART notebook presentation, along with a lesson plan and two worksheets takes you through a few aspects of the specification.
1. The idea that we cant see cells and that different cells are significantly different sizes.
2. The units metre, millimetre, micrometre and nanometre. Students are taught how to convert between units.
3. Why we use order of magnitude and how to calculate it using standard form.