The first English Euclid (1570) had pop-ups. Henry Billingsley, a London merchant, pasted folded paper solids into Book XI so readers could hold the geometry instead of imagining it.
https://t.co/y5anyWBuye
Here is a beautiful list! 125 free math textbooks, written by the mathematicians who teach the courses and shared on their own university pages. No sign-up, no paywall, no pirated copies. From high school algebra to graduate analysis. 👇
https://t.co/RHYaBMiKF1
Mathematical physicist Roger Penrose's journal is so beautiful. Some of it marks the road to a Nobel Prize, and some of it looks like the doodles you make while stuck on the phone with a boring person. 😍 https://t.co/iiL4IjhgSF
I curated 223 free physics textbooks, written by the physicists who teach the courses and shared on their own pages, university sites and open archives. No sign-up, no paywall, no pirated copies. From high school mechanics to string theory. 👇
https://t.co/E9ovZC0EGB
I curated 125 free math textbooks, written by the mathematicians who teach the courses and shared on their own university pages. No sign-up, no paywall, no pirated copies. From high school algebra to graduate analysis. 👇
https://t.co/2RHmcXLYMH