Graph Builder
Plot & Analyse Data
Enter your data, plot graphs, add lines of best fit and best-fit curves. Designed for GCSE students with clear, simple controls.
"No amount of experimentation can ever prove me right; a single experiment can prove me wrong."
Proportionality Playground
Work Out the Rule
Discover whether y ∝ x, x², 1/x or 1/x² — using nothing but the doubling test. Investigate a hidden relationship, classify it, then prove it with a prediction.