Education
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Epidemic Calculator
An interactive epidemic simulator where you tweak infection rate, incubation and lockdown parameters and watch the curve…
epitome
A semantic search engine for ancient texts: search themes and ideas across Greek, Latin and other corpora, including tho…
Equaldex Compare
Pick any two countries, states or provinces and compare their LGBT laws side by side, from marriage and adoption to gend…
Equitect
A puzzle platformer where you scale rough terrain with a limited supply of blocks to bridge the gap to each goal. Includ…
Erewhon: The Book of the Machines
Samuel Butler's 1872 chapter imagining machines evolving past humanity, a startlingly prescient essay on technology and…
Erich Friedman's Packing Center
A researcher's archive of optimal packing problems, showing the best known arrangements of circles, squares, and other s…
Eruptions, Earthquakes & Emissions
The Smithsonian's time-lapse web map animating volcanic eruptions, earthquakes, and emissions through Earth's history, s…
ESASky
An interactive map of the sky from the European Space Agency where you can pan across the universe and view real imagery…
Escape Pod
A pioneering weekly science fiction podcast that narrates free short stories as audio drama, running continuously since…
Escherllate
A free tessellating sketchbook for Escher-style drawings where whatever you draw on one tile appears on every tile at on…
eSchool News
A daily source of news on how K-12 educators use technology in the classroom, covering edtech legislation, best practice…
ESOL Courses
Free online English lessons and teaching resources for learners of English as a foreign language, with practice for stud…
Esperanto12
A free, no-signup crash course in Esperanto that teaches the 500 most important words, enough to follow simple conversat…
Essential Concepts of Landscape Painting
A landscape painter's blog explaining the essential concepts of painting landscapes, from composition and values to the…
Estimating Square Roots in Your Head
A clear, friendly guide to approximating square roots by mental arithmetic, with the reasoning behind each shortcut so t…
ETANA
A scholarly gateway to freely available texts, images, and maps on the ancient Near East, from Sumer to the Persian Empi…
Eterna
A browser puzzle game where players design RNA molecules, with the best solutions synthesized in real laboratories to ad…
Ethics & International Affairs
The Carnegie Council's quarterly peer-reviewed journal of essays, roundtables and book reviews on ethics, war, global ju…
Ethics Unwrapped
A free educational resource using short videos and case studies to explain core ethical concepts like moral courage and…
Ethnologue
The most cited encyclopedic reference of the world's living languages, listing speaker counts, locations, and classifica…
Eton College Collections
Online access to Eton College's art, manuscripts, rare books and natural history specimens, with searchable catalogues a…
Etymology Nerd
A blog and video project unpacking the surprising origins of everyday English words and slang for a general audience.
Euclid: The Game
A game that turns Euclid's Elements into compass-and-straightedge construction puzzles, with levels, medals and an onlin…
Euclidea
A geometric construction puzzle game where you solve more than 120 challenges using only a virtual compass and straighte…
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