‹ Science Essentials
Required practicals and maths skills
The skills behind every biology practical: units and magnification, means and percentages, rates and graphs, sampling, ratios and planning.
Start: Units and magnification About 10 min
Lessons
Practice and tests
By the end you can
Use magnification with mm, μm and nm Calculate means, percentage changes and uncertainties Find rates from counts, times and graphs Estimate populations from samples Plan a biology investigation Use the words of working scientifically: variables, anomalies, accuracy, precision, errors and resolution Helps with: GCSE (AQA, Edexcel, OCR)
Next unit: Atomic structure and the periodic table Previous unit: Ecology
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