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Posts

August 27, 2015

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6:42 PM | matthen: Connecting all points a varying distance apart along a...
matthen: Connecting all points a varying distance apart along a triangular wave, revealing a variety of smooth curves. Inspired by Henry Moore’s mathematical sculptures. [code]
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6:27 PM | Letter to the Editor Published in Education Week
A letter to the editor I submitted to Education Week was published this week.  It addresses the nature of change in education and how the global network of math educators, known as the MathTwitterBlogosphere (MTBOS), can make coping with this change easier. Check it out here: http://www.edweek.org/ew/articles/2015/08/26/as-math-education-changes-social-media-play.html
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6:26 PM | WAGS @ UW, 17–18 October 2015
The Fall 2015 Western Algebraic Geometry Symposium will be held at the University of Washington, Seattle, on the weekend of 17–18 October in Savery Hall 260 (on the Quad — not the math department building). Speakers are: Valery Alexeev, Georgia … Continue reading →
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6:24 PM | My Days as a Robot Whisperer
My desk was covered with papers, a glass of water, and a big shipping container. Even though my chair was there, I was sitting on the floor with my laptop, having a bad hair day, and a robot was seated next to me.  This was a typical day at Maplesoft for an engineering co-op student. For this project, at the request of my manager, I left my duties as Spanish translator and marketing assistant and I started to work with the robot NAO from Aldebaran Robotics. The purpose of this project was […]
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6:14 PM | Prime (Car) Number
It has always been a regret of epsilon proportion that my car license plate number doesn’t have particular significance. For example it is is divisible by 7 and hence not a prime, unlike the fact that my apartment number and … Continue reading →
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6:01 PM | Unizor - Geometry3D - Similarity - Cavalieri - Theorems 1
Notes to a video lecture on http://www.unizor.comMini Theorems 1Let's prove the condition of Cavalieri's principle (see the previous lecture explaining this principle) in a couple of very simple cases using the similarity. This would justify our decision to present the Cavalieri's principle among topics related to similarity.Mini Theorem A(two-dimensional case to introduce the approach to a proof)Given a straight line d on a plane and two segments on it, AB and CD, that have equal lengths.Let S […]
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6:00 PM | Yes, many psychology findings may be “too good to be true” – now what?
Today, Science published the first results from a massive reproducibility project, in which more than 250 psychology researchers tried to replicate the results of 100 papers published in three psychology journals. Despite working with the original authors and using original materials, only 36% of the studies produced statistically significant results, and more than 80% of […] The post Yes, many psychology findings may be “too good to be true” – now what? appeared first on Retraction […]
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5:53 PM | Fractions {Poster/Anchor Chart and Cards}
Fractions = Poster/Anchor Chart with Cards for Students A anchor chart to put on your Math Vocabulary board to use as a reference. Along with cards to use as bookmarks for a quick reference. Also included is a 24inch x 36inch (poster size) JPEG file included, so you […] Related Math Games: Fractions! = Poster & Anchor Chart with Cards for Students All About Fractions = Poster/Anchor Chart with Cards for Students Math Journal Dividing Fraction Anchor Chart {Poster and Cards}
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5:17 PM | Extracting NBA player movement data
There's no direct download, but there is an API.Tags: API, basketball, Python, sports
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5:11 PM | African Institute for Mathematical Science (AIMS)
The African Institute for Mathematical Sciences is an institution founded by Neil Turok in 2003 with its maiden location in South Africa. The institution's objective of raising the next Einstein from Africa through distinct programs and initiatives lead to the opening of several branches across the Africa continent. Among such programs and initiatives for achieving
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5:01 PM | The Dream Crusher
Enrolment week always seems so hard in a Sixth Form College. It should be a time of excitement, fresh faced enthusiastic new students and positivity for the year ahead. Then, as the week goes on the appointments get trickier and … Continue reading →
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4:54 PM | At times refreshingly irreverent
I was honored to discover that the July 2015 issue of Prabuddha Bharata magazine, illustrated above, had run a two-page review of MWA, under the byline of Swami Vidyanathananda.  But I was also puzzled until I figured out that Swami Vidyanathananda is also the mathematician known as Mahan Mj, or Mahan Maharaj, a distinguished specialist […]
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4:11 PM | UBC faculty to the Premier of BC: Help us out of this crisis
Two new types of allegations came out regarding John Montalbano, since I wrote 2 weeks ago the open letter asking him to resign from the UBC Board of Governors. One deals with his role in potentially compromising the academic freedom of one of … Continue reading →
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3:35 PM | Nonlinear functions on the left hand side and all that jazz
In my posts about assigning distributions to functions of data and parameters, I mentioned the tried and true example of trying to apply a distribution to a nonlinear function of a parameter: log(foo) ~ normal(0,1); In Stan at least, this does NOT imply that samples of foo have a lognormal frequency distribution, for that you […]
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3:32 PM | Cold fusion heats up: Fusion energy and LENR update
Introduction As we noted in previous Math Drudge blogs (#1 and #2), and in Huffington Post articles (#1 and #2), the world faces a grim future if we do not immediately rein in consumption of fossil fuels. Risks include rising sea levels, more frequent extreme temperatures, flooding, drought and conflicts among human societies. An eventual Continue reading Cold fusion heats up: Fusion energy and LENR update
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3:31 PM | 2015년 8월 24일의 일상 – 홍대/엘루이스/북악 팔각정공원
요즘들어 휴일 전날 항상 즐기는 심야 드라이브~ 이 날은 홍대 쪽으로 좀 가 봤다. 심야에 차타고 홍대 가니까 의외로 금방이다. 체감상 10~15분 정도밖에 안 걸린듯? 일요일 밤이라 그런지 사람들도 별로 없고..     출출해서 버거킹에서 주니어 와퍼세트 섭취. 버거킹이 패스트푸드 … Continue reading →Related Posts ?2015년 3월 20일의 일상 – 창경궁 / 인사동 탐방2015년 […]
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3:30 PM | Three retractions for Oregon neuroscience student investigated by ORI
Journals have retracted three out of the four papers flagged by the Office of Research Integrity during its investigation of a University of Oregon neuroscience student, David Anderson. Last month, when we first reported on the case, Anderson told us that he “made an error in judgment,” and took “full responsibility.” Two of the retraction notes say that Anderson […] The post Three retractions for Oregon neuroscience student investigated by ORI appeared first […]
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3:30 PM | Toward a unified theory of sparse dimensionality reduction in Euclidean space
 So we are now converging toward a theory for using sparse random projections for a variety of problems. Toward a unified theory of sparse dimensionality reduction in Euclidean space  by Jean Bourgain, Sjoerd Dirksen, Jelani Nelson Let Φ∈Rm×n be a sparse Johnson-Lindenstrauss transform [KN14] with s non-zeroes per column. For a subset T of the unit sphere, ε∈(0,1/2) given, we study settings for m,s required to ensure EΦsupx∈T∣∣∥Φx∥22−1∣∣<ε,i.e. so […]
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2:57 PM | Bayes theorem in real life
I had a chance to practice Bayesian inference in real life today: at 1pm my wife called to tell me that the carbon monoxide (CO) alarm at the house was going off.  Immediately two hypotheses came to mind: (1) there is a dangerous amount of CO in my house, (2) it's a false alarm.It's summer and all the windows are open in the house.  The furnace is not running and we don't have a gas stove.  And the detector is about 10 years old.  This background information makes a false […]
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2:48 PM | Inequalities and the Dynamic Method
This semester I’m teaching an undergraduate course at Georgia Tech on Mathematical Problem Solving.  In our first class, we discussed some famous inequalities like AM-GM and Cauchy-Schwarz, as well as some less famous ones like the Rearrangement Inequality and Chebyshev’s Inequality.  I wanted to record my thoughts here on a simple and relatively enlightening “uniform” […]
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1:47 PM | Abandoning Code Words
At some point in the past, I decided that it was important that students know that the question “Where does this function have a maximum?” meant “At what x-value does this function have a maximum?” and “What is the value of the maximum?” meant “What is the y-value of the maximum?” I told them what […]
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1:30 PM | Researchers suspended in Japan for funding violations
Hokkaido University has suspended two of its professors after an investigation found “improper receipt of research funding.” One member of the team was awarded more than 15 million yen (roughly $120,000 USD) in research grants from the Japan Society for the Promotion of Science (JSPS), according to the official statement (translated by One Hour Translation). The researchers […] The post Researchers suspended in Japan for funding violations appeared first on Retraction Watch.
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1:29 PM | A political sociological course on statistics for high school students
Ben Frisch writes: I am designing a semester long non-AP Statistics course for high school juniors and seniors. I am wondering if you had some advice for the design of my class. My currentthinking for the design of the class includes: 0) Brief introduction to R/ R Studio and descriptive statistics and data sheet structure. […] The post A political sociological course on statistics for high school students appeared first on Statistical Modeling, Causal Inference, and Social Science.
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1:12 PM | Hate Math -- 21 Reasons (NOT) . . .
Two four-letter words that I want NEVER to be used TOGETHER are hate and math.  A lively contradiction to my wish is provided by the following piece by slam poet Shappy Seasholtz.(For details on the World Poetry Slam to be held in Washington DC on Oct. 7-10, scroll down to the bottom of this posting.)21 Reasons Why I Hate Math     by Shappy Seasholtz1 - It's my worst subject.2 - I failed Algebra in high school.3 - When I retook Algebra in high school during the […]
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1:03 PM | Everyone Has To Raise Their Hands… and other thoughts
We haven’t started school year. But last week and this week I’ve done some brainstorming about things I intend to do this school year (which *ahem* has some aphorism involving a road and hell associated with it, right?), and so I thought I’d pull out those few concrete little bits that deal with questioning that I […]
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1:02 PM | Another New Resource! Multiplicative Thinking – From Skip Counting to Algebra (Grades 3 to 8)
For those of you about to return to another school year, welcome back! I am truly excited to announce the release of my newest teacher resource book: Multiplicative Thinking: From Skip Counting to Algebra (Grades 3 to 8). This book is designed for teachers of the intermediate grades and is focused on the teaching and learning of multiplication. This […]
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1:00 PM | An unintentionally informative sentence about the culture of the education reform debate
From a recent Upshot post by movement reformer Kevin Carey:If Congress removes that authority, it will mark the end of an optimistic, expansive era of federal efforts to improve K-12 education for disadvantaged students, one that began with the desegregation battles of the mid-20th century and extended to the creation of challenging standards nationwide. Quick history lesson. There is no real continuity between Brown v. Board of Education and the national standards mentioned above. With the […]
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12:30 PM | 8/27/15
|8 - 2 - 7| = 1^5Also:8 - √(2 + 7) = 1 * 5
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12:27 PM | First Day Wordle
Yesterday was our students' first day of class.  I'm very excited about what I saw so far.  The students were very respectful and I think I'm going to have a great year!I usually start the year with a survey for the students to fill out about themselves.  The first question asks the students to fill in the blank with one word.  Algebra is __________.  Then I take the words from all classes and create a Wordle.  This is the result:My plan to to give the same […]
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12:16 PM | Flip a Coin - Fay With Your Math (#4)
This is a the fourth problem I have planned in my FWYM series. So far I've chosen one problem on subtraction, one that focuses on logic, and one that uses combinatorics. This next problem gets into probability by looking at coin flips.Of the first four FWYM problems, I am most interested in seeing students' strategies for […] The post Flip a Coin - Fay With Your Math (#4) appeared first on Math Fireworks.
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