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Posts

March 06, 2015

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5:14 AM | GR0568 Q2 Solution (Tangent to Graph)
This is indeed a GRE Math question that even high school students can solve! Q2) Which of the following is an equation of the line tangent to the graph at ? (A) (B) (C) (D) (E) Solution: Firstly, at , … Continue reading →
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5:14 AM | בחירות 2015 – בוא נבחר באביב
כמו שזה נראה, הבלוג שלי גוייס על ידי במין צו 8 לעיסוק בבחירות 2015 ולקריאה לשינוי פוליטי בישראל האביב כמעט כאן זה שירו הנהדר של דוד גרוסמן קצר פה כל כך האביב שהולחן על ידי יהודה פוליקר שגם מבצע אותו. השיר … Continue reading →
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5:05 AM | Geometrical Streamers Shape Up
Drawing a regular pentagon or hexagon may take some tricky work with a protractor, but Rob shows that you can make them simply by knotting streamers in the right way.
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4:31 AM | A puzzle about the latest test ban (or ‘don’t ask don’t tell’)
A large number of people have sent me articles on the “test ban” of statistical hypotheses tests and confidence intervals at a journal called Basic and Applied Social Psychology (BASP)[i]. Enough. One person suggested that since it came so close to my recent “Task force post, that I either had advance knowledge or some kind of […]
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3:50 AM | Off On a Tangent
(Click on the comic if you can't see the full image.) (C)Copyright 2015, C. Burke.Some teachers really go off on tangents. This is another one that's been sitting in the joke idea box for longer than I can remember, but I never get around to doing. (Or maybe I just don't check that joke idea box often enough ... and there are several places where I write these things down, unfortunately.)
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3:43 AM | Algebra 2 Unit 1: Characteristics of Functions Interactive Notebook
Unit 1: Characteristics of FunctionsPage 7- This foldable came from Kathryn Belmonte and you can see the pictures of each flap below.Page 8 After learning the difference between a function and relation, students do this sorting activity and justify what makes it "not" a function. This sort came from Mrs. H.Page 9- This notation foldable came from my friend Brooke Seals.Page 10- This was a worksheet that I turned into an INB sorting activity. First they had to write in the different forms given […]
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3:24 AM | Top 10 Triangle Foldables found on Pinterest
From the first time I saw Diane Zike's book on foldables I have embraced them as a teaching tool, and have used them successfully in my class. Over the years I have found that they are a great way to organize material, are easy to transport, and can be fun to create. Here is my list of the top ten triangle foldables found on Pinterest.Paper protractor  This triangle fold-able takes a rectangular shaped paper and creates a protractor. The website has a nice one minute video detailing how to […]
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3:18 AM | Integers, fractions, and decimals are totally different things to kids.
My younger son and I are in the middle of talking about percents. This morning the topic at hand was questions like – what number is 20% more than 50? It was interesting to me to see the difference in approach that my son had to problems involving integers, fractions, and decimals. It is easy…
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3:00 AM | Mars 2015, 1er défi
Pour la deuxième année, chaque semaine, un défi du calendrier mathématique... - Défis du Calendrier Mathématique / Carrousel
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2:37 AM | [DMANET] PhD scholarships at SUTD
Up to 10 scholarships are available for bright and motivated students who want to pursue a PhD in Singapore, starting September 2015, in a number of areas broadly related to operations research such as: supply chain, transportation and logistics, telecommunication systems and the Internet, energy (renewables, environment, electricity markets), service systems, financial engineering, critical infrastructure and security, social networks, healthcare. Students will be attached to the Engineering […]
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2:18 AM | geobunnies:Fi”bunn”acci Sequence - Animated gif version
geobunnies:Fi”bunn”acci Sequence - Animated gif version
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2:13 AM | News on Intermediate Problems
The Minimum Circuit Size Problem goes front and center Eric Allender, Bireswar Das, Cody Murray, and Ryan Williams have proved new results about problems in the range between and -complete. According to the wide majority view of complexity the range is vast, but it is populated by scant few natural computational problems. Only Factoring, Discrete […]
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2:09 AM | 3 Act Math Task: Super-Bear
Another post from Tap Into Teen Minds. Enjoy! Access a real world math task with video that has students curious to determine how many mini- & regular bears it would take to make a SUPER gummy bear. The post Super-Bear appeared first on Tap Into Teen Minds.
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1:08 AM | Girls lack self-confidence in maths and science problems, study finds
Girls lack self-confidence in maths and science problems, study finds: Richard Adams:Girls “lack self-confidence” in their ability to solve mathematics and science problems and achieve worse results than they otherwise would, despite outperforming boys overall, according to an international study of gender equality in schools by the Organisation for Economic Cooperation and Development.
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1:06 AM | Girls Still Lag Behind Boys at Math, Study Finds
Girls Still Lag Behind Boys at Math, Study Finds: Melissa Korn:Using results from a 2012 assessment given to about a half-million 15-year-olds around the world, a new report by the Organization for Economic Cooperation and Development finds that even though more boys struggled to show basic proficiency in reading, math and science than did girls, boys still ultimately outperformed girls in math. The gap was widest at the top, with high-achieving boys scoring significantly higher than the top […]
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12:00 AM | On This Day in Math - March 6
Santa Sindone in Turin.Nobody since Newton has been able to use geometrical methods to the same extent for the like purposes; and as we read the Principia we feel as when we are in an ancient armoury where the weapons are of gigantic size; and as we look at them we marvel what manner of man he was who could use as a weapon what we can scarcely lift as a burden. ~William WhewellThe 65th day of the year; 65 is the smallest hypotenuse of two different primitive Pythagorean triangles (and of two […]

March 05, 2015

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11:43 PM | Quaternions in Paradise Lost
Last night I checked a few books out from a library. One was Milton’s Paradise Lost and another was Kuipers’ Quaternions and Rotation Sequences. I didn’t expect any connection between these two books, but there is one. The following lines from Book V of Paradise Lost, starting at line 180, are quoted in Kuipers’ book: Air […]
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11:41 PM | Failure Test Day
Recently, I posted this image on the inside of my door so that students would see it as they walk into class each day. At the same time, the door to my room is open a lot. Rarely a day … Continue reading →
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11:15 PM | mixture models with a prior on the number of components
“From a Bayesian perspective, perhaps the most natural approach is to treat the numberof components like any other unknown parameter and put a prior on it.” Another mixture paper on arXiv! Indeed, Jeffrey Miller and Matthew Harrison recently arXived a paper on estimating the number of components in a mixture model, comparing the parametric with […]
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10:06 PM | VWO 4 wiskunde A
VWO 4 wiskunde A
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9:44 PM | Judge rules most of PubPeer’s commenters can remain anonymous
PubPeer won a near-complete victory in a Michigan court today. A judge has agreed to allow the site to protect the identities of all but one of its anonymous commenters, after a cancer researcher demanded the site release the names of those who have critiqued his papers. For one of the comments on the site, […]The post Judge rules most of PubPeer’s commenters can remain anonymous appeared first on Retraction Watch.
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9:22 PM | Watch This Smartphone App Solve Math Problems (Sample Common Core Exam)
I’ve posted a new video that I think you’ll enjoy. Watch This Smartphone App Solve Math Problems The PhotoMath App can solve many algebra problems. It’s free and available on Apple, Android, and Windows phones. You can download the app or check out the PhotoMath website. Media coverage has been frantic and panicked about the […]
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9:18 PM | Fare matematica
La poesia, in altre parole, è matematica. E' vicina a una particolare branca della materia nota come combinatoria, lo studio delle permutazioni, o di come possiamo sistemare un particolare gruppo di oggetti, numeri o lettere secondo leggi stabilite. Già nel lontano 200 a.C., gli scrittori sulle poesie in sanscrito si chiedevano in quanti modi sia possibile sistemare vari insiemi di sillabe lunghe o corte, i mattoni dei versi in sanscrito. Una sillaba è corta, con una battura, o lunga, con […]
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9:09 PM | Young Mathematicians and the Challenges of Writing
One of the biggest challenges for many young mathematicians is creating work they feel worthy of sharing with the world. This feeling transcends well beyond the mathematical community and is quite prevalent in many fields. How does one deal with … Continue reading →
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9:00 PM | Origami doughnut squashes up to protect what's inside
The folds on this paper ring are precision-made by a laser so that when it's compressed, the hole at its centre stays the same size and protects its contents
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8:56 PM | Quiz : septième et huitième médailles
Voilà, on continue! Mes lecteurs étant très cultivés, ça avance beaucoup plus vite que prévu ;-)...
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8:40 PM | Relations & Their Relatives : 6
Re: Howard Pattee In the best mathematical terms, a triadic relation is a cartesian product of three sets together with a specified subset of that cartesian product. Alternatively, one may think of a triadic relation as a set of 3-tuples … Continue reading →
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8:12 PM | Penrose
Artwork by Elio Cassaghi   http://im-possible.info/english/art/computer/elio-cassaghi.html   Author - http://voolvif.deviantart.com/
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8:10 PM | Cartoon Metalogic
Bud Grace, creator of the comic strip the Piranha Club, is a former nuclear physicist -- No, really, look it up -- and every now and then a bit of STEM humor pops up.
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8:02 PM | First 143 Digits of Pi Chanted By Here Come The Mummies
Here Come The Mummies performed a chant of the first 143 digits of pi for the track "Easy As Pi".  These background vocals made their way on to the album "CuriousTease (Volume 1), where this was found.  Calculus Humor decided to take this awesome track and make another Pi Day video for the Pi Day of the century!   #wsite-video-container-955242960129614364{ background: url(//www.weebly.com/uploads/1/2/0/2/12023481/pi_day_201 [...]
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