# Posts

### March 03, 2015

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7:44 AM | The Croods (2013)

Full Length of The Croods in HD FormatNow you can enjoy The Croods in top video format with duration 98 Min and has been launched in 2013-03-21 with MPAA rating is 1043.Original Title : The CroodsMovie title in your country : The CroodsYear of movie : 2013Genres of movie : Adventure, Animation, Comedy, Fantasy, Family, Status of movie : ReleasedRelease date of movie : 2013-03-21Companies of movie : DreamWorks Animation, Countries of movie : United States of America, Language of movie : English,
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7:00 AM | I know 50

Daniel would like you to know that he knows 50 digits of pi. He uses groups of 5: 3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510 This is all he knows and he is going to see how …Read more »

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This video is intended for teachers and students who are preparing for the 2 Unit HSC Examination.
It provides a wide variety of practical advice about how to prepare for the examination and how to make the most of the three hours.
Video available for download via the alternate link.

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6:00 AM | Heart and Eyes

(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.While a blue heart is kind of bad, blue blood is pretty good. This comic is not meant to insult those with green or brown eyes by their exclusion. However, anyone with a brown heart should seek medical attention immediately.

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Der 11.11. (Martinstag) in Deutschland leitet sich bekanntlich nicht von der Zahl 11, sondern von der Beisetzung Martin von Tours am 11.11.397 ab. Auch sonst sind mir keine deutschen oder europäischen Feiertage bekannt, die sich explizit auf eine Zahl beziehen. In asiatischen Ländern scheinen Zahlen und ihre Symbolik eine größere Bedeutung zu haben. In Korea…

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Nineteen Eighty — if I had to pick the year that computational modeling invaded evolutionary game theory then that would be it. In March, 1980 — exactly thirty-five years ago — was when Robert Axelrod, a professor of political science at University of Michigan, published the results of his first tournament for iterated prisoner’s dilemma […]

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4:46 AM | Nicht mein Tag (2014)

Free Streaming Nicht mein Tag in High Quality VideoNow you can enjoy Nicht mein Tag in HD video with duration 110 Min and has been aired on 2014-01-16 with MPAA rating is 21.Original Title : Nicht mein TagMovie title in your country : Nicht mein TagYear of movie : 2014Genres of movie : Comedy, Status of movie : ReleasedRelease date of movie : 2014-01-16Companies of movie : Sony Pictures Releasing, Countries of movie : Germany, Language of movie : Deutsch, Durationof movie : 110 MinAverage vote
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I finished building a cabinet a couple of months ago just as the extreme cold arrived, which made my garage shop uninhabitable.. The ten-day forecast is now showing rising temperatures, so I am starting to think about my next cabinet construction effort. Continue reading →

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4:03 AM | Another Inductee To The 100% Club.

Kid comes off and on but figured better on than off...has to walk 2 and a half miles to get. Has discovered it's worth it. He actually looks pleased. This is how we do at The House of Math.Anyhow here is the short vid...Find me on Facebook and Instagram...

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3:56 AM | Hadamard on iteration

Many of heard of Hadamard only through his book “Psychology of Invention in the Mathematical Field”, but he was a first rate and prolific mathematician as well as a commentator on how mathematicians work. As is well known, the problem … Continue reading →

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3:45 AM | Flash Sale.

If someone wanted to get me this for MY birthday that would be nice. Okay for the next 5 Days:Password Flash Sale PT + SW Annual $50.00 USD Lifetime Pass (BOTH) $150.00 USD Sitewide Only $26.00 USD PT Only $26.00 USD Next sale won't be for quite sometime. I have no idea when mortco will have another sale. I wanted to have the trig page finished in time for the start of this sale but didn't quite make it...might be done by Tuesday tho...also passwords are going to change at the end […]

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A circle seems simple enough, a round plane figure with points on the border an equal distance from the center. If you are teaching arcs of circles, or trying to learn the angles of a circle you understand it can be a difficult task. In this post I will focus on helpful resources for arcs of circles. Here are 10 resources that should help. Circles and Arcs/Regents This page defines an arc ,gives examples, and goes over the relationship between an arc and the central angle.Central Angles
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I’ve been meaning to post about this for a while now, especially after the 2012 Nobel Prize went to Alvin Roth and Lloyd Shapley for work in matching markets. I have made a video that illustrates the Gale-Shapley algorithm and hopefully introduces many people to this wonderful part of game theory. The Stable Marriage Problem […]

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2:58 AM | Things I am thinking about.

How am I balancing support and agency? How am I making sure that my last class does not get a more annoyed version of me? Do the students know how much I like them? When am I not setting them up to meet expectations? What is my fault? When is fault okay and when should … Continue reading Things I am thinking about. →

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So I’ve got this new thing going where, once a week, we spend class solving a few worthwhile problems. Problems totally independent of whatever unit we’re in, just math that isn’t trivial, but is accessible for as many students as possible, and pushes students to think carefully and reason clearly. The first problem we did […]

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Another post from Tap Into Teen Minds. Enjoy!
Join Kyle Pearce Monday March 9th, 2015 at 7:30pm for his 2nd OTF Connect Session from the series: Incorporating the 4-Part Math Framework Into Your Lesson
The post Join Me on March 9th for a FREE @OTF_PD Connect Webinar appeared first on Tap Into Teen Minds.

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12:49 AM | Kicking Some Serious Triangle Booty

The children understand that sin, cos, and tan are side ratios. The children! They understand! They are not making ridiculous mistakes, and they can answer deeper understanding questions like, "Explain why sin(11) = cos(79)." I think right triangle trig is a frequent victim of the "First ya do this, then ya do this" treatment -- where kids can solve problems but have no idea what is going on. There's often not a ton of time for it, and it responds well to memorized procedures (in the short […]

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12:00 AM | Georg Cantor

Georg Cantor war ein deutscher Mathematiker und gilt gemeinhin als Begründer der Mengenlehre. Er wurde in St. Petersburg geboren und verbrachte sein Leben hauptsächlich in Deutschland.Erfahren Sie mehr über Cantor, seine Arbeiten und das Cantor'sche Diagonalverfahren.

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12:00 AM | On This Day in Math - March 3

*CHMA set is a Many that allows itself to be thought of as a One.~Georg CantorThe 62 day of the year; 62 is the smallest number that can be written as the sum of 3 distinct squares in 2 ways. (Students might try to find the smallest number that can be written as the sum of 2 distinct squares in 2 ways)In base 10, 62 is also the only number whose cube (238328) consists of 3 digits each occurring 2 timesThe digits 62 occur at the 61st & 62nd digits of phi, φ; AND The 61st & 62nd digits […]

### March 02, 2015

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11:47 PM | Comparing and Ordering Decimals

It is always so interesting to me what students take away in terms of strategies for doing various tasks in math class. In this particular case, ordering and comparing decimals. We all did the same shading activities, played the same comparing games, however the way this shading is applied to student thinking is so different […]

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Saw this interesting tweet from Tracy Johnston Zager tonight: After going through the post I scrapped what I’d planned to do with the boys tonight and asked each of them to go through Kaplinsky’s three questions. I’m doing a geometry course with my older son this year, so I expected that these questions would be…

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11:15 PM | Is Jeffreys’ prior unique?

“A striking characterisation showing the central importance of Fisher’s information in a differential framework is due to Cencov (1972), who shows that it is the only invariant Riemannian metric under symmetry conditions.” N. Polson, PhD Thesis, University of Nottingham, 1988 Following a discussion on Cross Validated, I wonder whether or not the affirmation that Jeffreys’ […]

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11:11 PM | Space Diagonal

After 8 years teaching Geometry from this textbook, I finally made the lesson on Space Diagonals more interesting than saying: Do Pythag twice. Sure always do the Space Diagonal Dance, to much laughter, but the PrBL model wins. No, I don't have a video of the dance (that I know of).I happened to have brought donuts for a meeting so I had this box.I made up a story told them the legend of the Prince who made his butler leave the castle on a quest to find a delicious bread stick, the crunchy […]

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10:51 PM | Who has? I have!

Have I ever mentioned that I used to also teach history? It has been since 2008, and I have always also taught math, but in my former life as high school history teacher, my classes played a variety of games aimed at learning vocabulary. They don't always translate well to math, but this one does, so long as the problems are short and can be done without paper.Step 1: Make a card set with the same number of cards as students (in classes with varying numbers of kids, some kids will hold two […]

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10:30 PM | Introducing shinyStan

As a project for Andrew’s Statistical Communication and Graphics graduate course at Columbia, a few of us (Michael Andreae, Yuanjun Gao, Dongying Song, and I) had the goal of giving RStan’s print and plot functions a makeover. We ended up getting a bit carried away and instead we designed a graphical user interface […]
The post Introducing shinyStan appeared first on Statistical Modeling, Causal Inference, and Social Science.

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10:15 PM | GeoGebra Global Gathering

We are happy to inform you that the official registration and abstract submission for the GeoGebra Global Gathering Conference are now open. Join us at our GeoGebra Global Gathering (G3, 2015) July 15 – 17 in Linz in Austria and register…Read more ›

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Faculty specializing in mathematics, chemistry, mechanical engineering, and economics among 126 selected.

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10:12 PM | A mathematician’s year in Japan

[bibtex key=Hamkins2015:AMathematiciansYearInJapan] Continue reading →