| 1. | | Show HN: Mathigon – an interactive, personalised mathematics textbook (mathigon.org) |
| 22 points by PLegner on March 14, 2019 | past | 2 comments |
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| 2. | | Circles and Pi – a fully interactive textbook (youtube.com) |
| 6 points by PLegner on March 14, 2019 | past |
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| 3. | | Interactive Online Textbook: World of Mathematics (mathigon.org) |
| 1 point by PLegner on June 17, 2013 | past |
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| 4. | | Eureka iPad App: Articles by Hawking, Penrose, Wolfram, Conway and more (itunes.apple.com) |
| 1 point by PLegner on Dec 6, 2012 | past |
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