scrimba.com
Scrimba provides educational videos, lessons, tutorials, or self-learning resources.
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visualizingsep.com
Visualizing SEP is an interactive visualization and search engine for exploring the Stanford Encyclopedia of Philosophy. Each search result is shown within a network graph of directly linked articles. The site is optimized for Chrome on desktop; mobile platforms and resolutions under 1280 x 720 are not supported.
Sebastian Thrun’s Introduction To Machine Learning provides AI-assisted learning, courses, tutorials, or study support.
youtube.com
SebastianLague is a YouTube video, playlist, or channel resource for tutorials, demos, reviews, or media.
seedlang.com
Seedlang provides educational videos, lessons, tutorials, or self-learning resources.
seeing-theory.brown.edu
Seeing Theory is an archived site offering a visual introduction to probability and statistics through interactive visualizations. It covers six chapters: basic probability, compound probability, probability distributions, frequentist inference, Bayesian inference and regression analysis. It was created by Daniel Kunin while an undergraduate at Brown University.
seligsim.com
SeligSIM is a free RC flight simulator for Windows that also runs on Mac and Linux. It offers over 140 airplanes and 35 flying sites, with aerodynamics and physics modeling. It has been in continuous development since 2003 and was originally known as FS One.
seo-cheat-sheet.9elements.com
A sorted list of technical on-page SEO best practices from 9elements, organized by HTML tags. It covers the title, meta description, heading, alt, canonical, Open Graph, responsive site meta and robots tags, with notes on recommended lengths and keyword use.
pshenok.github.io
Server Survival is a free, open-source browser game that teaches cloud architecture through 25 campaign levels in 11 languages, without installation. It covers topics such as load balancing, caching, autoscaling, circuit breakers, multi-region failover and GPU inference economics.
seterra.com
Seterra is a free map quiz site offering over 400 quizzes that cover countries, capitals, flags, cities, rivers, mountains and other geography topics. The site also offers quizzes on anatomy and science, and printable downloads for educators. It can be played on mobile devices.
setteidreams.net
Settei Dreams is described as an archive of animation production materials, including settei, color designs, artbooks, storyboards and production sketches. The site states the materials are intended as references for animation practice, fan art, 3D models and cosplay, and asks that settei not be printed and resold for profit.
shademap.app
ShadeMap is an online tool that simulates sun shadows for any date and time at any place on Earth. It simulates shadows cast by buildings, trees and terrain in 3D and can generate shadow accumulation and shadow accrual maps. The service runs online without installing or buying Google Earth Pro.
shadertoy.com
Shadertoy provides educational videos, lessons, tutorials, or self-learning resources.
sharda.ac.in
Sharda University is a private university in Delhi NCR that offers courses at the undergraduate, postgraduate and doctoral levels. Its website lists 330+ functional MOUs with partner organisations. A help and support staff responds to student queries around the clock.
excalihub.dev
Sharing provides educational videos, lessons, tutorials, or self-learning resources.
sheets.works
sheets.works is an educational website that hosts interactive data stories, games and data visualisation projects. Its core series, The Data Drop, publishes free weekly interactive data stories covering pop culture, sports, film, money and internet topics. The site also offers a daily Wordle-style sentence rephrasing game, uplifting news stories, a documentation of Greater Tokyo train station departure melodies, and a visualisation of global Google search trends for helping-related queries.
shmoop.com
Shmoop provides educational videos, lessons, tutorials, or self-learning resources.
shorpy.com
Shorpy is an archive of vintage photographs, featuring thousands of high-resolution scans made from large-format negatives. The photos are categorized by theme, such as cities, railroads, cars and World War II, and are browsable by photographer and location. The scans are available as framed prints or stock images.
sightreadingfactory.com
Sight Reading Factory is a cloud-based service that generates customizable sight reading exercises on demand. It offers multiple difficulty levels and unlimited exercises for piano, guitar, voice, strings, woodwinds, brass, and percussion. Students can practice in a web browser or iOS app, and educators can create assignments and use auto assessment.
sign-aip.net
Sign AIP provides educational videos, lessons, tutorials, or self-learning resources.
signlanguage101.com
An online American Sign Language dictionary offering signs for hundreds of words and phrases, demonstrated in video by Dr. Byron Bridges. Visitors can browse signs by category or use a beta sign search, and the site points to additional ASL courses and workbooks.
auslan.org.au
Auslan Signbank is a language resources site for Auslan, the language of the deaf community in Australia. It offers a dictionary, searches for signs related to medical and health topics and to educational and teaching topics, videos of deaf people using listed signs, information on the deaf community in Australia, and links to Auslan classes. Users are invited to provide feedback to help improve the dictionary.
signd.co.uk
Signd provides educational videos, lessons, tutorials, or self-learning resources.
signdeaf.com
SignDeaf is a website for learning British Sign Language online, with a BSL dictionary containing videos, handshape guides and CEFR-graded difficulty ratings. It offers a Sign of the Day, categories and six CEFR levels from A1 to C2, and states that new signs are added every week. The site describes itself as a Deaf-first platform and states that the full dictionary and tools are free.