Monday, April 10, 2017

Mercator Projection All the Way Down

Map facts: The Mercator projection is technically infinitely tall, and more warped as it goes down, so it must always be cropped somewhere. Below is a cropping somewhat lower than normal, so you can see: (1) Antarctica, (2) buildings at the Amundsen–Scott South Pole Station, and finally (3) individual snowflakes.

Hat tip: Geoawesomeness.

Monday, April 3, 2017

No, we probably don’t live in a computer simulation

A lovely rant by Sabine Hossenfelder:
All this talk about how we might be living in a computer simulation pisses me off not because I’m afraid people will actually believe it. No, I think most people are much smarter than many self-declared intellectuals like to admit. Most readers will instead correctly conclude that today’s intelligencia is full of shit. And I can’t even blame them for it. 

At Backreaction

Monday, March 27, 2017

How To Ruin Your Favorite Sitcoms With Simple Math

Math does not exist to make things better. It exists to empower you to tear things apart.

I support this message. 

Monday, March 20, 2017

Monday, March 6, 2017

It Can Never Lie To You

An very nice interview with Sylvia Serfaty, Paris-based mathematician, and winner of the Poincaré Prize:
“First you start from a vision that something should be true,” Serfaty said. “I think we have software, so to speak, in our brain that allows us to judge that moral quality, that truthful quality to a statement.”

At Wired.

Monday, February 13, 2017

Francis Su: Math as Justice

“Every being cries out silently to be read differently.” 

To Live Your Best Life, Do Mathematics

Monday, February 6, 2017

Milliken on CUNY Connected and Remediation

As a follow-up to last week's post, CUNY Chancellor James Milliken has this week unveiled out a new strategic plan called "CUNY Connected". Among the promises are increased graduation rates. In the subsection on remediation reform (again), he writes:
Each fall, approximately 20,000 students—over half of all CUNY freshmen– are assigned to developmental education in at least one subject, usually mathematics. In associate degree programs, 74 percent of freshmen were assigned to developmental education in math in fall 2015, 23 percent in reading, and 33 percent in writing. But CUNY’s one-size-fits-all approach to preparing students has not worked. In fall 2015, just 38% of the 14,215 students in remedial algebra successfully completed it.

Implementing these reforms, the number of students placed in remediation will decline by at least 15 percent. The number of students determined to be proficient after one year of remediation will increase by at least 5 percentage points in year one and will increase as we move to scale.

Under the reforms, 20,000 students per semester will receive tutoring and supplemental instruction and 4,000 will be enrolled in courses with faculty who have been newly trained. Another one thousand students will enroll in immersion programs or new developmental workshops. All students will have access to instructional software.

CUNY will bring to scale two developmental options of proven efficacy: 1) co-requisite courses—credit-bearing courses with additional mandatory supports in the form of workshops or tutoring, and 2) alternatives to math proficiency other than algebra for students pursuing majors or courses of study that do not require algebra. College algebra is necessary for many but not all majors.

We will also end the practice of requiring all students to pass common tests in algebra, writing and reading to exit developmental education. Grades, it has been found, are a better predictor of proficiency and success. CUNY will continue the use of standardized common final exams that count for 35 percent of the final course grade.

These are dictates that were communicated internally at CUNY within the last year. It's interesting that higher passing rates can be dictated in advance by fiat. To be clear: Most CUNY graduates will not need to be algebra proficient, most will not take a course which uses algebra skills, and those who do will not need to succeed on any particular assessment or test to be declared proficient. Another point of clarification: While "college algebra" is mentioned in this section, college algebra is not actually a remedial course (most students already have never taken college algebra at CUNY); the remedial/general education expectation which is being removed is at the level of elementary algebra, around 8th-9th grade level skills as identified in the U.S. Common Core and other curricula.