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# Posts

### November 22, 2014

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themathkid: The integral z-squared dzFrom one to the cube root of threeTimes the cosineOf three pi over nineEquals log of the cube root of e
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### November 21, 2014

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Seriously?You know the intelligence quotient of America has gone down considerably when you realize people take advantage of this... [...]
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Newest mathy grab-bag: 1)  George Hart presents 4 mins. of an elliptic hyperboloid: http://tinyurl.com/ndy2ovs 2)  A MathMunch weekly wrap-up: http://mathmunch.org/2014/11/16/grothendieck-circle-packing-and-string-art/ 3)  A couple more tributes to Grothendieck: https://rjlipton.wordpress.com/2014/11/16/alexander-grothendieck-1928-2014/ http://www.thebigquestions.com/2014/11/17/the-generalist
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No summary available for this post.
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The internet is a great way to find incredible things if you want to look for them. Just yesterday I was looking for inspiration and ideas and I found this: A huge video game shop in Paris (Fnac at La Defense). … Continue reading →
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(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.Can't get much closer. Maybe that's why the Police sang Don't Stand So Close to Me.
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1 + 1 + (2 * 1) = 1 * 4 Also: 1 * 1 * 2 * 1 = 1 * √4
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Pythagorean Theorem Cutouts 2Here is the second part of the previous post (Pythagorean Exploration 1 cut-outs). The first one uses the other two sides (a and b) of the right triangle to form the sides of the square pattern. This time, the hypotenuse (c) will be used for the sides of the square. You may use the discussion in Pythagorean Exploration 2 as a guide. You may download this template for personal use and for your math class activity. The length of the sides on the second page […]
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Mr. B’s “BRAIN-O” QuizGuaranteed to unclog clogged up […]
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How do you remove eggs from a carton? Do you select eggs haphazardly, or do you select the eggs more carefully so the weight is evenly spread out? The obvious reason to care is that a bad arrangement can make the carton wobbly and thereby more likely to be dropped. I made a video that […]

### November 20, 2014

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Το 1245,ο Γκοσουάν Δεν Μετζ υπολόγισε πως εάν ο Αδάμ, την ήμερα που δημιουργήθηκε,είχε αρχίσει να περπατά με ταχύτητα 25 μίλια την ημέρα,θα έπρεπε να περπατήσει ακόμη άλλα 713 χρόνια για να φτάσει στα πρώτα […]
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The Baffling and Beautiful Wormhole Between Branches of Math All about the wormhole known as Euler’s identity.
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Axis: Here’s a fun web-based game where to kill your enemies you aim using mathematical...
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1 + 1 = 2 + 0 = 1 * √4 Also: 1 + 1 + 2 + 0 = 1 * 4
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I don’t know why this question popped into my head, but it’s been sitting there for the past week and showing no signs of moving on. Suppose an enemy of mine threw a friendly blue whale at me. Being a friendly whale, it makes the blue-whale-noise equivalent of “DUCK!” to warn me it’s coming. How quickly... Read more »
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﻿﻿﻿﻿﻿                            eiπ + 1 = 0 Nice Lee Simmons piece today for Wired, rhapsodizing on "Euler's identity":http://www.wired.com/2014/11/eulers-identity/Love this wormhole analogy toward the end:"But the weirdest thing about Euler’s formula—given that it relies on imaginary numbers—is that it’s so immensely useful in […]
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Can you do 97×96 in your head? The trick in this video explains how to do this, and similar problems, very easily. Math Trick: Multiply Numbers Close To 100 In Your Head I have seen this trick in several places. For those wanting to learn more, a good reference on mental math is Bill Handley’s […]
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beesandbombs: virtual torus
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skit-liv: Fourier analysis with a mechanical computer https://www.youtube.com/watch?v=NAsM30MAHLg
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No summary available for this post.

### November 19, 2014

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(Click on the comic if you can't see the full image.) (C)Copyright 2014, C. Burke.How many sides does a paragon have?
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Puzzlebomb is a monthly puzzle compendium. Issue 35 of Puzzlebomb, for Novmber 2014, can be found here: Puzzlebomb – Issue 35 – November 2014 The solutions to Issue 35 will be posted at the same time as Issue 36. Previous issues of Puzzlebomb, and their solutions, can be found here.
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Thanksgiving is approaching and, as we all know, this is not a fun time for a turkey.Last week, at Isaac's Turkey Farm, the turkeys were led on their final walk down Turkey Lane. Turkey Lane (see picture below) follows the path of a parabola ($y=x^2$) with the farm located at $\left ( 0,0 \right )$ and the slaughter house located at $\left ( 2,4 \right )$, where $x$ and $y$ are measured in miles. This year, one turkey decided to escape. At the point located 1 mile north and 1 mile east of the f […]
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“One would be hard put to find a set of whole numbers with a more fascinating history and more elegant properties surrounded by greater depths of mystery—and more totally useless—than the perfect numbers.”—Martin GardnerWhile it is true that perfect numbers may not be as useful or evident in our environment as the Fibonacci series discussed last time, in terms of enigma and unresolved mysteries, nothing can probably come close to the magical perfect numbers. But first of all, what is […]
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Frozen anyone? [...]
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Some time ago I have written about how geometry has become an inspiration to art (Geometry & Art). I still believe the same thing, and I also wanted to make a small confession: I realized how interesting, beautiful and how … Continue reading →