Sue VanHattum
@suevanh.bsky.social
Math enthusiast, teacher, writer, parent, lesbian. Covid-cautious. Wondering how we build community for collapse.
Reposted by Sue VanHattum
#iTeachMath ♾️
For fans of non-standard analysis:
In Althea and the Mysteries of Calculus, I hope to use the simplest possible proofs. Some use limits, others use infinitesimals. As much as possible, I'd like to use infinitesimals.
Email me at [email protected] if interested.
For fans of non-standard analysis:
In Althea and the Mysteries of Calculus, I hope to use the simplest possible proofs. Some use limits, others use infinitesimals. As much as possible, I'd like to use infinitesimals.
Email me at [email protected] if interested.
December 28, 2025 at 6:01 AM
#iTeachMath ♾️
For fans of non-standard analysis:
In Althea and the Mysteries of Calculus, I hope to use the simplest possible proofs. Some use limits, others use infinitesimals. As much as possible, I'd like to use infinitesimals.
Email me at [email protected] if interested.
For fans of non-standard analysis:
In Althea and the Mysteries of Calculus, I hope to use the simplest possible proofs. Some use limits, others use infinitesimals. As much as possible, I'd like to use infinitesimals.
Email me at [email protected] if interested.
#iTeachMath ♾️
Do you enjoy playing around with math over the holidays? You might enjoy reading my (close to done) manuscript for Althea and the Mysteries of Calculus. And you'd be a big help to me.
The math parts are done (except for fixing mistakes).
Email me at [email protected]
Do you enjoy playing around with math over the holidays? You might enjoy reading my (close to done) manuscript for Althea and the Mysteries of Calculus. And you'd be a big help to me.
The math parts are done (except for fixing mistakes).
Email me at [email protected]
December 27, 2025 at 2:33 AM
#iTeachMath ♾️
Do you enjoy playing around with math over the holidays? You might enjoy reading my (close to done) manuscript for Althea and the Mysteries of Calculus. And you'd be a big help to me.
The math parts are done (except for fixing mistakes).
Email me at [email protected]
Do you enjoy playing around with math over the holidays? You might enjoy reading my (close to done) manuscript for Althea and the Mysteries of Calculus. And you'd be a big help to me.
The math parts are done (except for fixing mistakes).
Email me at [email protected]
We love duck. I have two perfect portions of duck breast. We were going to have it last night. I defrosted it all day.
It was still frozen, so the duck dinner plans changed. Today. No problem.
1/2
It was still frozen, so the duck dinner plans changed. Today. No problem.
1/2
December 26, 2025 at 11:46 PM
We love duck. I have two perfect portions of duck breast. We were going to have it last night. I defrosted it all day.
It was still frozen, so the duck dinner plans changed. Today. No problem.
1/2
It was still frozen, so the duck dinner plans changed. Today. No problem.
1/2
Reposted by Sue VanHattum
Putting the 4th quarter #MathPlay blog carnival together. Anything you've made or written that you want to share? Anything you've read or watched that you want to share?
December 26, 2025 at 5:05 PM
Putting the 4th quarter #MathPlay blog carnival together. Anything you've made or written that you want to share? Anything you've read or watched that you want to share?
Reposted by Sue VanHattum
Rest In Power, this is service to all. Extraordinary 🙌
Do you remember Betty Reid Soskin? She was the oldest serving National Park Ranger in the United States, we celebrated her retirement at the age of 100.
Betty Reid Soskin (1921–2025) passed away on Sunday, but she lived an extraordinary life.
“The answers are only temporary.”
— Betty
Betty Reid Soskin (1921–2025) passed away on Sunday, but she lived an extraordinary life.
“The answers are only temporary.”
— Betty
December 26, 2025 at 4:42 AM
Rest In Power, this is service to all. Extraordinary 🙌
4th repost. New bit? Her mom, Kristi Fulnecky, is a conservative podcaster. Surprise, surprise.
“ The daughter of a well known conservative operative , whose paper did not answer the topic at hand and had a carefully planned media campaign , had a trans instructor fired for grading a paper according to the agreed upon rubric”
The University of Oklahoma has removed an instructor who was accused by a student of religious discrimination over a failing grade on a psychology paper in which she cited the Bible and argued that promoting a “belief in multiple genders” was “demonic.” https://cnn.it/4b6g3rd
December 26, 2025 at 4:02 AM
4th repost. New bit? Her mom, Kristi Fulnecky, is a conservative podcaster. Surprise, surprise.
#iTeachMath ♾️
Look at the red one. Why is Desmos giving a curve here, instead of a straight line. (Adding parentheses fixes it, but what's happening?!)
www.desmos.com/calculator/m...
Look at the red one. Why is Desmos giving a curve here, instead of a straight line. (Adding parentheses fixes it, but what's happening?!)
www.desmos.com/calculator/m...
Error
www.desmos.com
December 26, 2025 at 12:19 AM
#iTeachMath ♾️
Look at the red one. Why is Desmos giving a curve here, instead of a straight line. (Adding parentheses fixes it, but what's happening?!)
www.desmos.com/calculator/m...
Look at the red one. Why is Desmos giving a curve here, instead of a straight line. (Adding parentheses fixes it, but what's happening?!)
www.desmos.com/calculator/m...
What is your favorite news source?
(I follow Heather Cox Richardson - way too positive and Democracy Now - great. I often check The Guardian.)
(I follow Heather Cox Richardson - way too positive and Democracy Now - great. I often check The Guardian.)
December 25, 2025 at 7:44 PM
What is your favorite news source?
(I follow Heather Cox Richardson - way too positive and Democracy Now - great. I often check The Guardian.)
(I follow Heather Cox Richardson - way too positive and Democracy Now - great. I often check The Guardian.)
I've been here daily for over a month. I guess I'm not following enough people. I want to see more news. And I follow I teach math, but there aren't enough posts on that to satisfy me.
I also miss (from fb, which booted me off for no obvious reason) actual conversations.
1/2
I also miss (from fb, which booted me off for no obvious reason) actual conversations.
1/2
December 25, 2025 at 7:20 PM
I've been here daily for over a month. I guess I'm not following enough people. I want to see more news. And I follow I teach math, but there aren't enough posts on that to satisfy me.
I also miss (from fb, which booted me off for no obvious reason) actual conversations.
1/2
I also miss (from fb, which booted me off for no obvious reason) actual conversations.
1/2
Yeah, this is the 3rd time I'm posting this. Each time, there's an added bit that infuriates me.
To be clear, the student by her own admission forgot an assignment to react to a specific reading til the last second, didn't want to delay going out, dashed something off in 20 min without reading the piece to comment on(!), no citations and not answering the assigned question.
Teacher fired
Teacher fired
The University of Oklahoma has removed an instructor who was accused by a student of religious discrimination over a failing grade on a psychology paper in which she cited the Bible and argued that promoting a “belief in multiple genders” was “demonic.” https://cnn.it/4b6g3rd
December 24, 2025 at 8:46 PM
Yeah, this is the 3rd time I'm posting this. Each time, there's an added bit that infuriates me.
Reposted by Sue VanHattum
If you’re wondering why your friends in academia are a little on edge right now, it’s because an eighteen-year-old who hasn’t done the reading, doesn’t look at the assignment, and has does no critical thinking skills more complex than “because I think it’s in the Bible” can literally end your career
The University of Oklahoma has removed an instructor who was accused by a student of religious discrimination over a failing grade on a psychology paper in which she cited the Bible and argued that promoting a “belief in multiple genders” was “demonic.” https://cnn.it/4b6g3rd
Oklahoma instructor removed from teaching for failing a Bible-based gender essay | CNN
The University of Oklahoma has removed an instructor who was accused by a student of religious discrimination over a failing grade on a psychology paper in which she cited the Bible and argued that promoting a “belief in multiple genders” was “demonic.”
cnn.it
December 24, 2025 at 6:21 PM
If you’re wondering why your friends in academia are a little on edge right now, it’s because an eighteen-year-old who hasn’t done the reading, doesn’t look at the assignment, and has does no critical thinking skills more complex than “because I think it’s in the Bible” can literally end your career
Reposted by Sue VanHattum
"Capitalism has a notorious tendency to periodically come spinning apart. Each time it does, those who profit from it have to convince everyone there is really no choice but to dutifully paste it all back together again, in something like the original form."
- David Graeber
- David Graeber
December 24, 2025 at 4:45 PM
"Capitalism has a notorious tendency to periodically come spinning apart. Each time it does, those who profit from it have to convince everyone there is really no choice but to dutifully paste it all back together again, in something like the original form."
- David Graeber
- David Graeber
Reposted by Sue VanHattum
December 24, 2025 at 8:17 PM
#iTeachMath ♾️
Scene from Althea and the Mysteries of Calculus:
Sofia steps up, and says, “We start with the definition. It’s like the slope, but we use f of x plus h and f of x, instead of y2 and y1. So we’d have this. It’s pretty ugly, do you think it’s right?"
[equation here]
1/x
Scene from Althea and the Mysteries of Calculus:
Sofia steps up, and says, “We start with the definition. It’s like the slope, but we use f of x plus h and f of x, instead of y2 and y1. So we’d have this. It’s pretty ugly, do you think it’s right?"
[equation here]
1/x
December 24, 2025 at 2:52 AM
#iTeachMath ♾️
Scene from Althea and the Mysteries of Calculus:
Sofia steps up, and says, “We start with the definition. It’s like the slope, but we use f of x plus h and f of x, instead of y2 and y1. So we’d have this. It’s pretty ugly, do you think it’s right?"
[equation here]
1/x
Scene from Althea and the Mysteries of Calculus:
Sofia steps up, and says, “We start with the definition. It’s like the slope, but we use f of x plus h and f of x, instead of y2 and y1. So we’d have this. It’s pretty ugly, do you think it’s right?"
[equation here]
1/x
Reposted by Sue VanHattum
“Why isn’t there a White History Month?”
Because every month is White History Month. History is written by the victors — and colonizers. Much of the American history and literature we learned for generations erased the contributions of marginalized groups.
open.substack.com/pub/jesspipe...
Because every month is White History Month. History is written by the victors — and colonizers. Much of the American history and literature we learned for generations erased the contributions of marginalized groups.
open.substack.com/pub/jesspipe...
Not That Kind of White
White supremacy
open.substack.com
December 23, 2025 at 4:21 PM
“Why isn’t there a White History Month?”
Because every month is White History Month. History is written by the victors — and colonizers. Much of the American history and literature we learned for generations erased the contributions of marginalized groups.
open.substack.com/pub/jesspipe...
Because every month is White History Month. History is written by the victors — and colonizers. Much of the American history and literature we learned for generations erased the contributions of marginalized groups.
open.substack.com/pub/jesspipe...
Reposted by Sue VanHattum
December 23, 2025 at 3:19 PM
#iTeachMath ♾️
Want a nice hard puzzle for the holidays? This (the 2nd puzzle in the post) was in Games magazine in 1992. Enjoy!
mathmamawrites.blogspot.com/2009/12/holi...
Want a nice hard puzzle for the holidays? This (the 2nd puzzle in the post) was in Games magazine in 1992. Enjoy!
mathmamawrites.blogspot.com/2009/12/holi...
Holiday Logic Puzzles
I'd like to share two puzzles here. One is by Mike Shenk, who has a site called puzzability , and is interviewed here . It's called Oh Deer!...
mathmamawrites.blogspot.com
December 23, 2025 at 4:52 AM
#iTeachMath ♾️
Want a nice hard puzzle for the holidays? This (the 2nd puzzle in the post) was in Games magazine in 1992. Enjoy!
mathmamawrites.blogspot.com/2009/12/holi...
Want a nice hard puzzle for the holidays? This (the 2nd puzzle in the post) was in Games magazine in 1992. Enjoy!
mathmamawrites.blogspot.com/2009/12/holi...
Reposted by Sue VanHattum
A graduate teaching assistant who gave a University of Oklahoma student a failing grade on a psychology essay will no longer be teaching at the university
Graduate instructor who gave failing grade to Samantha Fulnecky no longer teaching at OU
A graduate teaching assistant who gave a University of Oklahoma student a failing grade on a psychology essay will no longer be teaching at the university.
www.koco.com
December 23, 2025 at 1:29 AM
A graduate teaching assistant who gave a University of Oklahoma student a failing grade on a psychology essay will no longer be teaching at the university
Reposted by Sue VanHattum
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...
A Desmos illustration: www.desmos.com/calculator/o...
ParabolaSegmentArea
www.desmos.com
December 23, 2025 at 1:17 AM
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...
A Desmos illustration: www.desmos.com/calculator/o...
I got this link 3 years ago. It looks fun. I saw that it was from Steve Phelps, and followed him just now. @mathtechcoach.bsky.social
I took a screenshot of what I did with it. It's in the first comment.
www.desmos.com/calculator/9...
I took a screenshot of what I did with it. It's in the first comment.
www.desmos.com/calculator/9...
snowflake
www.desmos.com
December 23, 2025 at 3:27 AM
I got this link 3 years ago. It looks fun. I saw that it was from Steve Phelps, and followed him just now. @mathtechcoach.bsky.social
I took a screenshot of what I did with it. It's in the first comment.
www.desmos.com/calculator/9...
I took a screenshot of what I did with it. It's in the first comment.
www.desmos.com/calculator/9...
Reposted by Sue VanHattum
What a mess! Wyoming has some of the least competitive ACA markets in the country. In places like Teton County, there has often been only one ACA insurer (Blue Cross Blue Shield of Wyoming). That lack of competition drives prices way up. This is ridiculous.
December 22, 2025 at 4:31 PM
What a mess! Wyoming has some of the least competitive ACA markets in the country. In places like Teton County, there has often been only one ACA insurer (Blue Cross Blue Shield of Wyoming). That lack of competition drives prices way up. This is ridiculous.
Happy solstice to all! The sun is coming back now. (Since 6:03am California time.) My chickens will be so happy.
It's gonna rain for at least the next week, so I don't know when I'll get to see this alleged sun. But I guess I have to trust that it's there.
It's gonna rain for at least the next week, so I don't know when I'll get to see this alleged sun. But I guess I have to trust that it's there.
December 21, 2025 at 6:18 PM
Happy solstice to all! The sun is coming back now. (Since 6:03am California time.) My chickens will be so happy.
It's gonna rain for at least the next week, so I don't know when I'll get to see this alleged sun. But I guess I have to trust that it's there.
It's gonna rain for at least the next week, so I don't know when I'll get to see this alleged sun. But I guess I have to trust that it's there.
Reposted by Sue VanHattum
I saw a Waymo follow the car in front of it and just blast through an intersection rather than treat it like a four-way stop and stop because the traffic light was out this afternoon.
PG&E is having a massive outage in San Francisco. Waymo robots aren't handling the traffic light outages well. Cell service is also out is some places.
No surprise as Waymo robots & cell have repeatedly failed during power outages.
CPUC regulates both Waymo and PG&E (Profit Greed & Explosions).
No surprise as Waymo robots & cell have repeatedly failed during power outages.
CPUC regulates both Waymo and PG&E (Profit Greed & Explosions).
December 21, 2025 at 1:37 AM
I saw a Waymo follow the car in front of it and just blast through an intersection rather than treat it like a four-way stop and stop because the traffic light was out this afternoon.
Reposted by Sue VanHattum
Legal analyst Elie Mystal explains how Trump's latest executive order upended the Civil Rights Act. When it comes to civil rights violations or discrimination claims, the DOJ will no longer consider one specific kind of evidence:
Math
Math
The DOJ Just Made It Almost Impossible to Prove Racism Exists
By rolling back “disparate impact" claims, the Trump administration is reducing courts to mere rubber stamps for the white supremacy written into the laws.
dlvr.it
December 19, 2025 at 8:22 PM
Legal analyst Elie Mystal explains how Trump's latest executive order upended the Civil Rights Act. When it comes to civil rights violations or discrimination claims, the DOJ will no longer consider one specific kind of evidence:
Math
Math