Ungrading after 11 weeks

Mathematics professor Robert Talbot reports on his ongoing experiment with ungrading — giving feedback and emphasizing the students’ metacognition, rather than encouraging them to fixate on “marks.” (Students who are less equipped to self-evaluate might actually benefit from the clear signposting provided by grades, so in his experience, removing grading from education does not magically…

Big Calculator: How Texas Instruments Monopolized Math Class

My math education predated the widespread use of graphing calculators. I remember writing my own BASIC programs to graph simple functions, but that was in a summer school programming class during middle school, not part of my high school curriculum. I’m amazed these old calculators cost this much. Bulky and black, with large, colorful push…

The history of Tetris randomizers

A pleasantly detailed analysis of how the various editions of Tetris chose what piece was next. In 1985, Alexey Pajitnov and Vadim Gerasimov released Tetris to the public. This fun and highly addictive game challenged players to fit pieces together that were dealt in a random order. Since then, over 150 licensed versions of Tetris games have…

Columbia Journalism Review

Sorry, Wrong Number

Numerical errors usually occur for one of these five reasons: A journalist mishears a correct number given to them by a source and fails to double-check it. A source unwittingly provides a mistaken piece of information and the journalist fails to verify it. A source deliberately fudges the numbers and the journalist fails to verify…

Journalism by the Numbers (a pedagogical play in one scene) #math

(Lights up on a college journalism classroom. The professor enters, surveys the room.) Professor: Math! Students: (Shocked reaction.) Professor: Math!! Students: (Scattered cries of “No!”) Professor: MATH!!! Students: NO!!!   (Blackout.)   (40 minutes later.)   Professor: So, at the very least when you encounter numbers in your reporting, contact sources who can help you…

What Khan Academy’s Fun, Free Learning Empire Has to Do with Dystopian Social Control

Over the Christmas break, I’ve been churning through Khan Academy math drills, so that I can be a more effective homeschool parent. It’s actually kind of fun watching my score go up, and earning badges. In the way that birds who are trained to peck buttons for food think it’s fun to peck their little beaks bloody. As a grad student ploughing through…

How to Lie with Data Visualization

Data visualization is one of the most important tools we have to analyze data. But it’s just as easy to mislead as it is to educate using charts and graphs. In this article we’ll take a look at 3 of the most common ways in which visualizations can be misleading. —Heap Data Blog.

The Value of Failure

Upon reading that recent message from my inbox, I wanted to shout out “let your child fail.” The shouting was not due to frustration, rather to be sure that my voice was heard by many. And when I say fail, I mean fall. Let them fall. How can we learn to get back up if…

Students say “math class is stupid and boring,” and they are right. –Mathematician Paul Lockhart

I am working on some conference papers that touch on coding as a liberal art. While reviewing classics, like Stephenson’s In the Beginning Was the Command Line and Knuth’s approach to “Literate Programming,” From the insightful and quirky “A Mathematician’s Lament,” by Paul Lockhart. A musician wakes from a terrible nightmare. In his dream he…