Free online learning tools

Creates Chicago-style citations from sources you look up.

Creates Harvard references from a URL, ISBN or DOI.

Creates IEEE references from sources you look up.

Creates MLA works cited entries from a URL, ISBN or DOI.

Explorable on how neurons fire and learn, with a playable neuron network.

Drill reading notes on the staff in treble, bass or other clefs.

Shows cross references for any Bible verse ranked by votes.

Finds Bible verses by topic.

Drag points to see how a least-squares line and its residuals change.

Simulations of how pressure, volume and temperature affect gases.

Simulations of ray reflection from plane and curved mirrors.

Simulations of light bending at boundaries and through lenses.

Simulations of vector addition and projectile trajectories.

Change plate density and thickness to see how mountains, volcanoes and oceans form.

Interactive PCA demo showing how components are found from data.

Runs code step by step and draws the variables and memory at each line, for several languages.

Looks up Quranic Arabic words by root with occurrences listed.

Practise recognising scale types written on the staff.

Visual lessons on chance, expectation and variance with simulations you can rerun.

Interactive introduction to priors, likelihoods and posterior updating.

Interactive pages covering set operations, conditional probability and Bayes' rule.

Hands-on pages for point estimates, confidence intervals and hypothesis testing.

Explore discrete and continuous distributions by changing their parameters and watching the shape change.

Visual intro to linear regression and correlation with adjustable data.