Kevin Hall
@ijkijkevin.bsky.social
Math teacher and most hardcore Detroit City FC fan in Virginia. Personal account, views are my own.
I think this offers interesting perspective on the tax incentives often handed out by states like Michigan.
cc: @dailydetroit.bsky.social
cc: @dailydetroit.bsky.social
One of my all-time favorite tax quotes beautifully summarizes this issue:
"I have never actually met a businessman... who was actually involved in decision-making about the tax issues of where to locate a
business (that actually employed people) who would agree that...
"I have never actually met a businessman... who was actually involved in decision-making about the tax issues of where to locate a
business (that actually employed people) who would agree that...
We'll be fine. Most won't leave. And the few who will, will not move their entire businesses out of CA. And the few businesses that will won't stop selling into CA because it's still where the market is, and our income tax is based on that. So, let's do it.
December 27, 2025 at 12:01 AM
I think this offers interesting perspective on the tax incentives often handed out by states like Michigan.
cc: @dailydetroit.bsky.social
cc: @dailydetroit.bsky.social
Reposted by Kevin Hall
I think this strengthens the case for Stancilism.
Immediate post pandemic economy was *weird* in a way that made it hard to compare it to similar years.
But we've got low unemployment and low inflation now. Very hard to make the case that now is worse than the Volcker shock.
Immediate post pandemic economy was *weird* in a way that made it hard to compare it to similar years.
But we've got low unemployment and low inflation now. Very hard to make the case that now is worse than the Volcker shock.
UMich consumer sentiment (current conditions) at 50.4 is a new all-time low -- going back to data from the 1970s.
U.S MICHIGAN CONSUMER SENTIMENT (DEC) ACTUAL: 52.9 VS 53.3 PREVIOUS; EST 53.5
December 19, 2025 at 3:13 PM
I think this strengthens the case for Stancilism.
Immediate post pandemic economy was *weird* in a way that made it hard to compare it to similar years.
But we've got low unemployment and low inflation now. Very hard to make the case that now is worse than the Volcker shock.
Immediate post pandemic economy was *weird* in a way that made it hard to compare it to similar years.
But we've got low unemployment and low inflation now. Very hard to make the case that now is worse than the Volcker shock.
Reposted by Kevin Hall
Can someone please respond to Stephen Miller with this message from Frank Sinatra?
December 26, 2025 at 8:04 PM
Can someone please respond to Stephen Miller with this message from Frank Sinatra?
Reposted by Kevin Hall
Enjoy some interactive #MathPlay 🧮 solving a #Christmas equation via GraspableMath 🎄🎅🟰
#ITeachMath #MTBoS #MathsToday #EdTech #STEM #EdChat #ElemMathChat #EduChat #MathSky #Christmas2025
🔗 activities.graspablemath.com/whiteboards/...
#ITeachMath #MTBoS #MathsToday #EdTech #STEM #EdChat #ElemMathChat #EduChat #MathSky #Christmas2025
🔗 activities.graspablemath.com/whiteboards/...
December 19, 2025 at 12:00 AM
Enjoy some interactive #MathPlay 🧮 solving a #Christmas equation via GraspableMath 🎄🎅🟰
#ITeachMath #MTBoS #MathsToday #EdTech #STEM #EdChat #ElemMathChat #EduChat #MathSky #Christmas2025
🔗 activities.graspablemath.com/whiteboards/...
#ITeachMath #MTBoS #MathsToday #EdTech #STEM #EdChat #ElemMathChat #EduChat #MathSky #Christmas2025
🔗 activities.graspablemath.com/whiteboards/...
Reposted by Kevin Hall
We just murdered eight more people in boats.
December 16, 2025 at 2:45 AM
We just murdered eight more people in boats.
I had been using a lot of DeltaMath for the last couple of years, but this week I tried creating some really nice Kuta worksheets that I edited on my iPad to make some of the problems worked examples, and it went really well.
I think I've been underusing Kuta.
#MTBoS
I think I've been underusing Kuta.
#MTBoS
December 13, 2025 at 3:21 AM
I had been using a lot of DeltaMath for the last couple of years, but this week I tried creating some really nice Kuta worksheets that I edited on my iPad to make some of the problems worked examples, and it went really well.
I think I've been underusing Kuta.
#MTBoS
I think I've been underusing Kuta.
#MTBoS
I've never actually tried for a culture victory in Civ 6, but clearly these folks have never even played Civ, sheesh.
It's like they are actively trying to kill the tourist industry.
December 10, 2025 at 2:11 AM
I've never actually tried for a culture victory in Civ 6, but clearly these folks have never even played Civ, sheesh.
Interesting thread!
Are we so sure it's even matter that is having a gravitational effect on galaxies? Have people proposed other ideas, like some other structure that is having an effect?
December 10, 2025 at 1:59 AM
Interesting thread!
Reposted by Kevin Hall
just riffing on this, in 1944 my grandad's friend Paddy, who would go on to become a very distinguished writer, kidnapped a German general in occupied Crete and took him up into the mountains with a resistance team, from where he was sent on to the UK by submarine. Now, up in the mountains ...
there is not any particularly strong evidence that study of the humanities make people good people. the elites of many brutal empires were extremely well-read!
December 9, 2025 at 10:36 PM
just riffing on this, in 1944 my grandad's friend Paddy, who would go on to become a very distinguished writer, kidnapped a German general in occupied Crete and took him up into the mountains with a resistance team, from where he was sent on to the UK by submarine. Now, up in the mountains ...
Reposted by Kevin Hall
Some (more) very big Dem overperformances on the Big Board tonight so far:
FL-SD-11: Republicans hold deep-red district, but Dems overperform by 22 pts
FL-HD-90: Dems hold blue-leaning district, outperforming 2024 by 17 and, perhaps more importantly, beating 2020 by 6
FL-SD-11: Republicans hold deep-red district, but Dems overperform by 22 pts
FL-HD-90: Dems hold blue-leaning district, outperforming 2024 by 17 and, perhaps more importantly, beating 2020 by 6
The Downballot's special elections Big Board for the 2025-26 cycle
docs.google.com
December 10, 2025 at 1:38 AM
Some (more) very big Dem overperformances on the Big Board tonight so far:
FL-SD-11: Republicans hold deep-red district, but Dems overperform by 22 pts
FL-HD-90: Dems hold blue-leaning district, outperforming 2024 by 17 and, perhaps more importantly, beating 2020 by 6
FL-SD-11: Republicans hold deep-red district, but Dems overperform by 22 pts
FL-HD-90: Dems hold blue-leaning district, outperforming 2024 by 17 and, perhaps more importantly, beating 2020 by 6
December 9, 2025 at 2:40 AM
Reposted by Kevin Hall
This discussion featuring @ddmeyer.bsky.social should be very interesting: www.aei.org/events/educa...
www.aei.org
December 3, 2025 at 5:41 PM
This discussion featuring @ddmeyer.bsky.social should be very interesting: www.aei.org/events/educa...
Reposted by Kevin Hall
Will your family members appreciate being gifted a book about math teaching for the holidays? Let's find out. bookshop.org/p/books/teac...
Teaching Math with Examples
Check out Teaching Math with Examples - Some teachers think that there's little to say about teaching with examples - after all, everyone uses them. But here are just some of the questions you might h...
bookshop.org
December 5, 2025 at 5:51 PM
Will your family members appreciate being gifted a book about math teaching for the holidays? Let's find out. bookshop.org/p/books/teac...
Reposted by Kevin Hall
Every legal story now is either
Ancient Circuit Judge Delivers Crystal Clear 100 Page Rebuke To Trumpist Overreach
or
In Unsigned Shadow Docket Decision, 6-3 Majority Declares Trump Can Hunt People For Sport
Ancient Circuit Judge Delivers Crystal Clear 100 Page Rebuke To Trumpist Overreach
or
In Unsigned Shadow Docket Decision, 6-3 Majority Declares Trump Can Hunt People For Sport
October 3, 2025 at 10:26 PM
Every legal story now is either
Ancient Circuit Judge Delivers Crystal Clear 100 Page Rebuke To Trumpist Overreach
or
In Unsigned Shadow Docket Decision, 6-3 Majority Declares Trump Can Hunt People For Sport
Ancient Circuit Judge Delivers Crystal Clear 100 Page Rebuke To Trumpist Overreach
or
In Unsigned Shadow Docket Decision, 6-3 Majority Declares Trump Can Hunt People For Sport
Would have been better as 1^2 + 1^2 = x^2. IYKYK
December 2, 2025 at 2:59 AM
Would have been better as 1^2 + 1^2 = x^2. IYKYK
Reposted by Kevin Hall
White House Reclassifies Nursing As Hobby https://theonion.com/white-house-reclassifies-nursing-as-hobby/
November 24, 2025 at 11:00 PM
White House Reclassifies Nursing As Hobby https://theonion.com/white-house-reclassifies-nursing-as-hobby/
Curious if you've read the article and have any thoughts @mpershan.bsky.social , since I know you've written about grades vs SAT's in the past.
This article is why I'm skeptical that eliminating SAT's in favor of grades will really pan out. Grade inflation to easily aligns with the short-term incentives of people in k12.
www.theargumentmag.com/p/when-grade...
www.theargumentmag.com/p/when-grade...
When grades stop meaning anything
The UC San Diego math scandal is a warning
www.theargumentmag.com
November 19, 2025 at 2:01 AM
Curious if you've read the article and have any thoughts @mpershan.bsky.social , since I know you've written about grades vs SAT's in the past.
Reposted by Kevin Hall
"It is the first time a mathematician has received NSW’s highest honour for scientific endeavour."
cc #iTeachMath × #MathSky!
cc #iTeachMath × #MathSky!
An article from @sydney.edu.au about today’s significant event #NSWPremiersPrizes news-opinion.sydney.edu.au/link/id/zzzz...
Nalini Joshi named 2025 NSW Scientist of the Year
Trailblazing mathematician Professor Nalini Joshi has been awarded the top scientific accolade in NSW for 2025.
news-opinion.sydney.edu.au
November 18, 2025 at 10:17 PM
"It is the first time a mathematician has received NSW’s highest honour for scientific endeavour."
cc #iTeachMath × #MathSky!
cc #iTeachMath × #MathSky!
Reposted by Kevin Hall
UCSD released a report on their own students showing:
*25% of students got 7 + 2 = ___ + 6 wrong
*61% of students couldn’t round 374,518 to the nearest hundred
*37% of students couldn't subtract fractions
It does make me wonder what percentage of students understood the report.
*25% of students got 7 + 2 = ___ + 6 wrong
*61% of students couldn’t round 374,518 to the nearest hundred
*37% of students couldn't subtract fractions
It does make me wonder what percentage of students understood the report.
November 13, 2025 at 4:36 AM
UCSD released a report on their own students showing:
*25% of students got 7 + 2 = ___ + 6 wrong
*61% of students couldn’t round 374,518 to the nearest hundred
*37% of students couldn't subtract fractions
It does make me wonder what percentage of students understood the report.
*25% of students got 7 + 2 = ___ + 6 wrong
*61% of students couldn’t round 374,518 to the nearest hundred
*37% of students couldn't subtract fractions
It does make me wonder what percentage of students understood the report.
This article is why I'm skeptical that eliminating SAT's in favor of grades will really pan out. Grade inflation to easily aligns with the short-term incentives of people in k12.
www.theargumentmag.com/p/when-grade...
www.theargumentmag.com/p/when-grade...
When grades stop meaning anything
The UC San Diego math scandal is a warning
www.theargumentmag.com
November 19, 2025 at 1:52 AM
This article is why I'm skeptical that eliminating SAT's in favor of grades will really pan out. Grade inflation to easily aligns with the short-term incentives of people in k12.
www.theargumentmag.com/p/when-grade...
www.theargumentmag.com/p/when-grade...
Reposted by Kevin Hall
One analytical model shows that, as of November 5th, the dismantling of U.S.A.I.D. has already caused the deaths of 600,000 people, two-thirds of them children. https://newyorkermag.visitlink.me/jUzNSc
The Shutdown of U.S.A.I.D. Has Already Killed Hundreds of Thousands
The short documentary “Rovina’s Choice” tells the story of what goes when aid goes.
newyorkermag.visitlink.me
November 6, 2025 at 9:00 PM
One analytical model shows that, as of November 5th, the dismantling of U.S.A.I.D. has already caused the deaths of 600,000 people, two-thirds of them children. https://newyorkermag.visitlink.me/jUzNSc
Reposted by Kevin Hall
I want to highlight this from my post. There are lots of perfectly good explanations for "why" are tied to the particulars of the specific case. I think an important part of teaching any subject is pushing everyone to step towards generalization.
pershmail.substack.com/p/understand...
pershmail.substack.com/p/understand...
November 12, 2025 at 10:08 PM
I want to highlight this from my post. There are lots of perfectly good explanations for "why" are tied to the particulars of the specific case. I think an important part of teaching any subject is pushing everyone to step towards generalization.
pershmail.substack.com/p/understand...
pershmail.substack.com/p/understand...
Reposted by Kevin Hall
Fall 2017: Then-NYT reporter literally warning Epstein that someone is "digging around again."
![From:
Thomas Jr., Landon
Sent:
9/27/2017 2:47:47 PM
To:
Subject:
Got another call from Connelly..
Importance:
High
Jeffrey Epstein [jeevacation@gmail.com]
He is digging around again -- not clear if its another book/or expanded paperback version. Was asking me all sorts of questions about why you hired Ken Starr. I told him I had no idea - I think he is doing some Trump-related digging too.
Anyway, for what its worth...
Landon Thomas, Jr.
Financial Reporter
New York Times
http://topics.nytimes.com/top/reference/timestopics/people/t/landon_ir thomas/index.h
tml](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:36eqtmzysqf7wsslczw4uxcd/bafkreia6463yzmb2suqn5rbfslvtta667av3ryynaetbsl7x6tniezyawu@jpeg)
November 12, 2025 at 10:05 PM
Fall 2017: Then-NYT reporter literally warning Epstein that someone is "digging around again."
Reposted by Kevin Hall
"Mark my words, one wrong step in this town’ll land you in a whole heap of social services."
Not Sure How They Deal With Criminals In Your Town, But ’Round Here We Use A Restorative Justice Process
Well, well, well. What have we got here? Another city slicker who thinks he can waltz into my town and start causin’ all sorts of trouble. I’d be careful if I was you, fella. Because however they do t...
theonion.com
November 13, 2025 at 12:00 AM
"Mark my words, one wrong step in this town’ll land you in a whole heap of social services."
Does anyone in #MTBoS have an article for why worked examples should be fully worked-out rather than the typical math teacher "slow reveal"?
November 13, 2025 at 12:09 AM