Education
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Physics Magazine
The American Physical Society's free magazine spotlighting notable new physics research with readable summaries written…
Physics World
The magazine of the Institute of Physics, with news, features, and commentary on physics, astronomy, and space for the g…
Pianist Magazine
The blog of Pianist magazine, with tips, expert advice, interviews, and stories for piano players from beginners to adva…
Piano Lessons Online
An online piano course with lessons for people who want to learn to play, offering a way to start learning the piano for…
Pianodao
A site for piano players and teachers with advice, reviews, interviews and tuition articles, mixed with notes on qigong…
Picturegoing
An archive of eyewitness accounts of going to the pictures, gathering diary entries, letters and memoirs from writers li…
Pictures of Internment Camps in USSR
A photographic record of Japanese prisoners held in Soviet camps after World War II, with maps, testimonies and context…
Pieces of History
The US National Archives blog, sharing discoveries from its vast holdings of billions of pages of records through storie…
PingSunday
Free table tennis coaching from coach EmRatThich, with lessons on technique, equipment advice, and tips for learning pin…
Pirates and Privateers
A monthly online publication on maritime piracy and privateering from ancient times to the present, with articles, book…
Pitt Rivers Museum Collections
The online collections of Oxford's famously crowded Pitt Rivers Museum, where you can search hundreds of thousands of ob…
Pivot Physics
A physics blog with practical study guides and educational explainers aimed at students working through their courses an…
Pixel Art Tutorials by Saint11
A collection of pixel art technique tutorials by artist Pedro Medeiros, mostly short 512x512 lessons on animation, shadi…
PizzaMaking.com
A community site for serious pizza makers, with dough calculators, style guides, and forums covering everything from Nea…
PKU Online Judge
Peking University's online judge, an archive of competitive programming problems from ACM ICPC contests that you can bro…
Plain Vanilla
A tutorial site on web development with only vanilla HTML, CSS, and JavaScript, no tools or frameworks, showing how far…
PlanetMath
A community-written mathematics encyclopedia whose entries are written and reviewed by members, browsable by subject ind…
Planning Tank
A knowledge base on urban, regional, and rural planning for students and professionals, with articles on cities, environ…
PLATO – Philosophy Learning and Teaching Organization
A nonprofit promoting philosophy for children, offering free lesson plans and a toolkit for sparking philosophical discu…
Play the Past
A group blog on the intersection of cultural heritage and games, with essays on history, archaeology, museums and meanin…
Play With Your Math
A weekly open math puzzle prompt shared with a global community of teachers and students, inviting genuine exploration r…
Playing Soviet
An interactive database of rarely seen Soviet children's book illustrations from Princeton's Cotsen Collection, browsabl…
PlayStrategy
A free, open-source server hosting Chess, Go, draughts, and dozens of other abstract strategy variants for online play a…
PlayTak
A free online server for Tak, a minimalist abstract strategy game invented for a fantasy novel, with live play and a ran…
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