I keep falling down on my duty to provide cute-kid content, here; I also keep forgetting to post something about a nerdy bit of our morning routine. So, let’s maximize the bird-to-stone ratio, and do them at the same time. The Pip can be a Morning Dude at times, but SteelyKid is never very happy […]

# Category: Math

## On Hugo Voting Slates and Clustering

This Hugo nomination scandal continues to rage on, and much of what’s going on is just a giant sucking vortex of stupid. Standing out from this, though, is the guest post by Bruce Schneier at Making Light, which cuts through the bullshit to get to what’s really important, namely using this as an excuse to […]

## GPA’s Are Idiotic

I was thinking about something only tangentially related to grading, when it struck me that the way we go about generating student grade point averages is the kind of mind-bogglingly stupid system that requires lots of smart people working together to produce. Two very different groups of smart people, with very different ways of looking […]

## The Two-Box Addition Game

SteelyKid’s school does a “March Math Madness” thing, and this year all the kids in her class are being asked to practice “Math Facts” for ten minutes a night. This appears to be motivated by some requirement that students be able to rattle off basic addition problems at high speed. So there are flash cards […]

## Science Story: Not a Bath House

(When I launched the Advent Calendar of Science Stories series back in December, I had a few things in mind, but wasn’t sure I’d get through 24 days. In the end, I had more than enough material, and in fact didn’t end up using a few of my original ideas. So I’ll do a few […]

## Some Notes on Gender Bias in Elementary School Math

I’ve seen a lot of reshares of this report about the long-term effect of gender bias in elementary math, which comes from an NBER working paper about a study of Israeli schools. The usual presentation highlights one specific result, namely that on a math test graded by teachers who knew the names of the students, […]

## The Problem with (and Promise of) Word Problems

Math with Bad Drawings has a post about “word problems” that will sound very familiar to anyone who’s taught introductory physics. As he notes, the problem with “word problems” for math-phobic students is that it requires translating words into symbols, and then using the symbols to select a procedure. It adds a step to what […]

## Uncertain Dots 15

Rhett and I did the 15th episode of our Uncertain Dots hangout yesterday, commenting on a discussion started by Casey Rutherford about what we would like students coming into college physics to know. We had a slight difference of opinion about physics content, but agreed about the importance of algebra (which is like sunscreen). I […]

## Why Is Girls’ Soccer So Dangerous?

Over at Five Thirty Eight, Walt Hickey has a piece about cheerleading as a sport and injury rates, which is both a nice look at the way to use stats to measure the real danger level of an activity, and the sort of small details that can be teased out. The piece includes a table […]

## Great Moments in Puzzling Axis Labels

While I’m complaining about statisticulation in social media, I was puzzled by the graph in Kevin Drum’s recent post about college wage gaps, which is reproduced as the “featured image” above, and also copied below for those reading via RSS. I don’t dispute the general phenomenon this is describing– that the top 10% of college […]