TIL: A parabola can be constructed based solely on the intersections of lines - no arcs or measurement needed. Easier to show than to tell: www.desmos.com/calculator/g... Some probs for Ss to come when time permits. h/t again to The Genius of Gaudi, Alsina and Nelson, p24. #iteachmath #mathtoday

TIL: The area of the parabolic segment between x=A and x=A+B depends *only* upon the value of B. This applies to any quadratic. h/t The Genius of Gaudi, Alsina and Nelson, MAA Press, p25. #iteachmath #mathtoday A Desmos illustration: www.desmos.com/calculator/o...

#mtbos #iteachmath Geez, I use examples like this in my A2 classes!

Reaching the Masses: Six Authors on Public Outreach [about Mathematics] A Zoom conversation with: Keith Devlin Marcus du Sautoy Jordan Ellenberg Sarah Hart John Allen Paulos Steven Strogatz ams.org/journals/not... PDF: ams.org/journals/not...

Trump reveals his health care policy: "You can give up certain products. You could give up medicine. Under the China policy, every child can get many medications. They only need aspirin or cough syrup. They don’t need that many. You don’t need lots of checkups for your daughter. 2 or 3 is nice."

I missed this, having been overwhelmed by the blackheartedness and narcissim of Trump's post. But @sethabramson.bsky.social makes an important point here.

The far-right has spent the past several years accusing the left of teaching conspiracies and propaganda and indoctrinating children into extreme ideologies. Now, as you may have guessed, they're doing what they accused the left of doing, but it's probably worse than you think. My latest.

Looks clear!

i’m not crying you’re crying xkcd: Fifteen Years

My students liked these arithmetic sequence number puzzles when we were trying to learn something similar. mathequalslove.net/step-puzzles/

"When the members of Congress in their video urge what seems to be the entire military not to follow illegal orders, they may unintentionally blur the very lines that keep the system functioning." www.thebulwark.com/p/what-ameri...

Three variations on a nice Calculus problem I came across yesterday. #iTeachMath #MTBOS

States rights?

We were there - estimates at least 1500, maybe quite a bit more. Here's my poster:

Some personal news: I've been fired from the Washington Post in the aftermath of the Charlie Kirk shooting. Thread incoming. substack.com/@karenattiah...

DJT: "I could stand in the middle of Fifth Avenue and shoot somebody, and I wouldn't lose any voters, OK? It's, like, incredible." If he did: Hegseth would say the victim was a narcotrafficker and would praise Trump for his “lethality”. AND...

Cell phones are essentially useless when they are not plugged in.

“We should not have to live in a country where the Government can seize anyone who looks Latino, speaks Spanish, and appears to work a low wage job. Rather than stand idly by while our constitutional freedoms are lost, I dissent.” www.nbcnews.com/politics/sup...

Gift link to an excellent column by @willbunch.bsky.social share.inquirer.com/329Lm0 “If Trump’s “Department of War” is serious about staging its first battle on the shores of Lake Michigan, it picked the wrong fight.” #WinninUgly

'Every person who pumped his fist at Trump’s news conference should pause and think very hard about letting him, or any president, expand the definition of war until due process dies.' - @davidfrenchjag.bsky.social www.nytimes.com/2025/09/07/o...

People from all over are showing up for DC. This is not a moment. It’s a movement. We are united in our demands. We are all DC! #FreeDC

Seven countries currently get 100 percent of their electricity from renewable energy. Norway and Costa Rica are at 98 percent

This freakin’ story, man…. How a Top Secret SEAL Team 6 Mission Into North Korea Fell Apart www.nytimes.com/2025/09/05/u...

As a parent of two kids in NJ public schools, this ROCKS.

In 2001, I was lead counsel on a class action case on behalf of so-called "comfort women"--sex slaves who were kidnapped from grade schools and town squares across southeast Asia, ranked by race, and forced to service up to forty Japanese soldiers a day in concentration camps--and this made me cry.

I'm pleased to introduce a full set of Congressional *and* legislative report cards, courtesy of the Princeton Gerrymandering Project. An enormous amount of work, the culmination of several years of development. Check it out! samwang.substack.com/p/redistrict...

What this really confirms is how profoundly corrupt and indefensible Trump and Stephen Miller's handling of this has been all throughout. Those of us commenting on this have argued all along that Trump *always* had the option of bringing him back and proceeding through lawful channels. 2/

He has kept among us, in times of peace, Standing Armies without the Consent of our legislatures.

Thank you! This earned a quick donation to VoteBeat!

My team at the Crowd Counting Consortium (@djpressman.bsky.social, Soha Hammam, & Chris Shay) has finalized our participation estimates for No Kings Day on 6/14. Here are five key takeaways🧵:

Read this. “Even in darkness, there is incandescence—the flicker flames of everyday people fixed on the side of morality. I want to recognize myself in the mirror when this ends… Make yourself recognizable with me. Together, we can build an America we believe in.” www.thenation.com/article/acti...

The importance of teaching statistics. This is apparently a chart of "MEDIUM INCOME". #iTeachMath

Homer explains why we need to speak up *today*, not tomorrow!

Jfc

So we’re the only outlet that finds it newsworthy that the company behind @GovBillLee’s Tesla tunnel project was founded by Lee’s Economic Development Commissioner Stuart Mcwhorter’s father? And their execs hid their ID’s when blocking @brotherjones_ from the event?

Trump was impeached, twice. Considering posting this every day until the Smithsonian corrects its exhibit. Feel free to join me.

That press event Trump just did was as bleak as it gets. We better hope what he said about prosecuting Democrats for treason and other false allegations is just bluster, or we are headed to an extremely dark place.

“It turned out, I had made a terrible mistake: I had remained friends with someone who had appeared on Kash Patel’s enemies list. How did Bongino find out about this private friendship? I honestly don’t know. … I faced a choice: get demoted or resign.” www.lawfaremedia.org/article/good...

cool english.elpais.com/science-tech... the arXiv paper: arxiv.org/abs/2502.06137

Dachau in July 1933... reported in the New York Times timesmachine.nytimes.com/timesmachine...

Andry José Hernández Romero, I remember you, even if I do not know how to articulate my horror, rage, & sorrow at your treatment by my government. No one has heard from you in 109 days. As vigil, I’m posting a photo or video of you every day until you are returned from El Salvador.

Read the Wiki article about her life and career, and consider how much more humankind could have accomplished had we not carried around so much bigotry. And consider how much we we stand to lose as we return to it.

Wow! www.nytimes.com/2025/06/28/w...

Federal agents used explosives to enter a U.S. citizen’s home and entered — guns drawn — on a baby, a 6-year-old, and their mother. She believes it’s because her boyfriend attended an ICE protest where he accidentally hit a cop car (and was released by cops). www.nbclosangeles.com/news/local/h...

Justice Ketanji Brown Jackson’s dissent hits the target. She is reminding us of the stakes in this case. And she is spot on. www.supremecourt.gov/opinions/24p...

Wow. There's no daylight between Bove's "F*** off!" to the courts annd Vought's "We won't need to follow the law."

Great! (...although I might have preferred labels to folders). Also, you can now go into Desmos and choose the tool you want (Geo, 3D, etc.) rather than having to specify different URLs. #iteachmath #mtbos

I'm signed up! #mtbos #iteachmath