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51.Calculus in 20 minutes (www.youtube.com)
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52.Learning Advanced JavaScript (ejohn.org)
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53.
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54.Is God dead? (isgoddead.googlemashups.com)
Percentage of people who identify as atheist, agnostic, or non-believer in God.
Least Religious Countries. -
55.Let's dig a hole so deep it came out the other side of the Earth (www.objectmatrix.info)
See the other side of the world.
The antipodes refer to lands and peoples located on the opposite side of the world compared to the speaker. This has a general, linguistic meaning and a technical, geographical meaning (Wikipedia].
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56.
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57.Physics and Free Will (www.youtube.com)
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58.Peter Norvig - Theorizing from Data [video lecture] (www.youtube.com)
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59.Simon Funk's SVD for collaborative filtering (sifter.org)
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60.How to explain stuff (www.senthilgandhi.com)
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61.Possible Existence of a Neutron (www.geocities.com)
The text of a 1932 paper hypothesizing the existence of a particle with mass but no charge. Impossible, right?
It's interesting to keep in mind that today's "facts" (atoms have protons, neutrons and electrons) were often wild conjectures a few generations ago.
So, how do you treat new ideas that come your way?
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62.How to write a spelling corrector (norvig.com)
Great discussion about how to solve a problem in an elegant way. Has source code so you can try it out yourself, and shows the steps involved in understanding the solution (not "Here's the final answer, chumps"). Again, being able to recognize that others are starting from zero really helps get the right explanation mindset across.
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63.Discussions on mathematics (www.dpmms.cam.ac.uk)
I really like the approach taken here. Topics are covered in detail, but with the mindset that "Yes, this stuff can be tricky" instead of "Just learn these facts". Especially titles like "What is so wrong with thinking of real numbers as infinite decimals?" (http://www.dpmms.cam.ac.uk/~wtg10/decimals.html). Being able to empathize is a huge part of having a nice explanation.
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64.Resonances, waves and fields (resonanceswavesandfields.blogspot.com)
An interesting, very visual explanation of infinite series and their relation to our favorite functions (e^x, sin).
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65.DNA seen through the eyes of a coder (ds9a.nl)
Interesting analogy of how to understand DNA from a programming point of view. DNA is the source code for us, after all! Shows how you can make a subject more approachable and enjoyable by tackling it from a different angle.
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66.http://sqlzoo.net/ -- interactive SQL tutorial (sqlzoo.net)
I first saw this link several years ago, and still have an urge to go back and revisit. It's a database tutorial with interactive exercises! There's no better way to learn.
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67.Javascript Closures For Dummies (blog.morrisjohns.com)
Excellent description of javascript closures, with live, inline examples. So few programming tutorials take advantage of the dynamic nature of the web!
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68.Wonderful astronomy tutorial -- learn to tell North by the night sky! (www.quietbay.net)
Simply excellent presentation / tutorial about the constellations and how to tell direction using the night sky. Fun and useful -- I wish more history was taught in this manner.
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69.Lockhart's Lament [pdf] (www.maa.org)
Excellent diatribe on problems with math education. We focus on the mechanics and not the core idea.
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