Mandy Jansen
@mandymathed.bsky.social
Professor of mathematics education at the University of Delaware's School of Education. Former middle school mathematics teacher in Arizona. I wrote a book called Rough Draft Math: Revising to Learn. (Obviously, all views are my own.)
If we ever doubted that he was in the files... you can read some emails here.
November 12, 2025 at 6:37 PM
If we ever doubted that he was in the files... you can read some emails here.
Reposted by Mandy Jansen
The Supreme Court has rejected a call to overturn its landmark decision that legalized same-sex marriage nationwide
Supreme Court Rejects Call To Overturn Its Decision Legalizing Same-sex Marriage Nationwide
The Supreme Court has rejected a call to overturn its landmark decision that legalized same-sex marriage nationwide.
www.huffpost.com
November 10, 2025 at 3:01 PM
The Supreme Court has rejected a call to overturn its landmark decision that legalized same-sex marriage nationwide
Reposted by Mandy Jansen
This is Trump “not touching“ the East Wing of the White House. Remember this the next time Trump says he won’t touch Social Security.
abcnews.go.com/Politics/ent...
abcnews.go.com/Politics/ent...
Entire East Wing expected to be demolished as soon as this weekend, sources say
The White House is expected to demolish the entire East Wing to allow for construction of President Trump’s ballroom, sources familiar with the project told ABC News.
abcnews.go.com
October 23, 2025 at 12:19 AM
This is Trump “not touching“ the East Wing of the White House. Remember this the next time Trump says he won’t touch Social Security.
abcnews.go.com/Politics/ent...
abcnews.go.com/Politics/ent...
Reposted by Mandy Jansen
when your class is online asynchronous but canvas is down because of AWS crashing. 🙃
i don't know, y'all, seems to me like letting three companies run everything is a bad idea.
i don't know, y'all, seems to me like letting three companies run everything is a bad idea.
October 20, 2025 at 1:43 PM
when your class is online asynchronous but canvas is down because of AWS crashing. 🙃
i don't know, y'all, seems to me like letting three companies run everything is a bad idea.
i don't know, y'all, seems to me like letting three companies run everything is a bad idea.
Reposted by Mandy Jansen
Happy "PROFESSOR!!! CANVAS IS DOWN!!!" day to all academics who celebrate.
October 20, 2025 at 5:32 PM
Happy "PROFESSOR!!! CANVAS IS DOWN!!!" day to all academics who celebrate.
Also Canvas!!!
Snapchat, Canva, Duolingo, Zoom, Amazon, MyFitnessPal, Fortnite, Signal, Roblox and more are currently down.
October 20, 2025 at 9:00 PM
Also Canvas!!!
Reposted by Mandy Jansen
This is a hell of a way to learn that Amazon runs everything
October 20, 2025 at 5:05 PM
This is a hell of a way to learn that Amazon runs everything
Reposted by Mandy Jansen
The way one company can bring down half the fucking internet
October 20, 2025 at 2:02 PM
The way one company can bring down half the fucking internet
Reposted by Mandy Jansen
Inspired by #NCTMATL25 to present at an upcoming conference? Both NCTM and OAME 2026 conference proposals close on Nov. 1st. Here are some thoughts on the benefits of writing a math conference proposal. pbbmath.weebly.com/blog/confere... #ITeachMath @oamelearns.bsky.social
Conference Proposals to Clarify Your Practice
The 2025 NCTM conference kicks off in just a few days in Atlanta, Georgia. Social media is full of teachers preparing for the event and exhibitors inviting participants to visit their booths. While I....
pbbmath.weebly.com
October 18, 2025 at 2:06 PM
Inspired by #NCTMATL25 to present at an upcoming conference? Both NCTM and OAME 2026 conference proposals close on Nov. 1st. Here are some thoughts on the benefits of writing a math conference proposal. pbbmath.weebly.com/blog/confere... #ITeachMath @oamelearns.bsky.social
Reposted by Mandy Jansen
There is a robust conversation already about supporting students digital literacy abilities.
This is good & necessary & (from what I can see) happening.
I would offer that there is an equally compelling case for the need to practice perspective taking.
I wish this was more supported.
This is good & necessary & (from what I can see) happening.
I would offer that there is an equally compelling case for the need to practice perspective taking.
I wish this was more supported.
October 19, 2025 at 11:21 AM
There is a robust conversation already about supporting students digital literacy abilities.
This is good & necessary & (from what I can see) happening.
I would offer that there is an equally compelling case for the need to practice perspective taking.
I wish this was more supported.
This is good & necessary & (from what I can see) happening.
I would offer that there is an equally compelling case for the need to practice perspective taking.
I wish this was more supported.
Why did a delivery driver ring my doorbell early in the morning on a day when I could sleep in but not any other day?
October 18, 2025 at 11:37 AM
Why did a delivery driver ring my doorbell early in the morning on a day when I could sleep in but not any other day?
I am vaccinated. I also value herd immunity, so get your shots, please!
“Vaccines are not just for disease prevention, but it’s also to prevent you from getting a severe form of the disease (if you get infected) that sends you to the hospital or worse. Flu every year and Covid every year still cause significant mortality in the country.”
www.cnn.com/2025/10/15/h...
www.cnn.com/2025/10/15/h...
Respiratory virus season has arrived. What to know about getting this year’s vaccines | CNN
It’s that time of year when the leaves are turning golden, there’s a chill in the air and the threat of respiratory viruses like Covid-19, influenza or RSV looms across the country.
www.cnn.com
October 17, 2025 at 4:47 PM
I am vaccinated. I also value herd immunity, so get your shots, please!
At the NCTM research conference, @meg-botello.bsky.social and I presented about a mathematics teacher’s incorporation of drafting and revising into an Illustrative Mathematics lesson.
October 16, 2025 at 7:08 PM
At the NCTM research conference, @meg-botello.bsky.social and I presented about a mathematics teacher’s incorporation of drafting and revising into an Illustrative Mathematics lesson.
I did not know that Family Feud was filmed in Atlanta when I created a Family Feud game for my NCTM burst session to present in ATL!
Do you have any answers to the question?
Do you have any answers to the question?
October 16, 2025 at 7:04 PM
I did not know that Family Feud was filmed in Atlanta when I created a Family Feud game for my NCTM burst session to present in ATL!
Do you have any answers to the question?
Do you have any answers to the question?
Reposted by Mandy Jansen
PENN IS OUT! That means both institutions that signed prior agreements with the administration have said no. We're at 3 rejections.
I told y'all once the second one hit yesterday, the clock started for the rest.
www.thedp.com/article/2025...
I told y'all once the second one hit yesterday, the clock started for the rest.
www.thedp.com/article/2025...
Penn rejects White House proposal for special funding treatment
With the decision, Penn becomes the third university to decline the offer.
www.thedp.com
October 16, 2025 at 6:05 PM
PENN IS OUT! That means both institutions that signed prior agreements with the administration have said no. We're at 3 rejections.
I told y'all once the second one hit yesterday, the clock started for the rest.
www.thedp.com/article/2025...
I told y'all once the second one hit yesterday, the clock started for the rest.
www.thedp.com/article/2025...
Reposted by Mandy Jansen
Reposted by Mandy Jansen
Second set of fun with friends at #NCSM25!
@annieforest.bsky.social @iteachthewhy.bsky.social @cluzniak.bsky.social @mandymathed.bsky.social @coreydrake @cfless.bsky.social @kourtneypeters @kimmontague.bsky.social @pwharris.bsky.social
@annieforest.bsky.social @iteachthewhy.bsky.social @cluzniak.bsky.social @mandymathed.bsky.social @coreydrake @cfless.bsky.social @kourtneypeters @kimmontague.bsky.social @pwharris.bsky.social
October 15, 2025 at 5:08 PM
Second set of fun with friends at #NCSM25!
@annieforest.bsky.social @iteachthewhy.bsky.social @cluzniak.bsky.social @mandymathed.bsky.social @coreydrake @cfless.bsky.social @kourtneypeters @kimmontague.bsky.social @pwharris.bsky.social
@annieforest.bsky.social @iteachthewhy.bsky.social @cluzniak.bsky.social @mandymathed.bsky.social @coreydrake @cfless.bsky.social @kourtneypeters @kimmontague.bsky.social @pwharris.bsky.social
I so appreciated the community who attended our session: How can math class save democracy? Thanks to @cluzniak.bsky.social for being an amazing collaborator for our session at @mathedleaders.bsky.social #NCSMRiseUp
October 14, 2025 at 8:52 PM
I so appreciated the community who attended our session: How can math class save democracy? Thanks to @cluzniak.bsky.social for being an amazing collaborator for our session at @mathedleaders.bsky.social #NCSMRiseUp
Looking forward to presenting on Tuesday, Oct 14, at 2:15 pm @mathedleaders.bsky.social with @cluzniak.bsky.social!
October 13, 2025 at 8:04 PM
Looking forward to presenting on Tuesday, Oct 14, at 2:15 pm @mathedleaders.bsky.social with @cluzniak.bsky.social!
I loved Vanessa and Peter’s session at #NCSMRiseUp ! Who knew that Orange and Pink would go so well together. 💕🧡 @themathguru.bsky.social
October 13, 2025 at 7:45 PM
I loved Vanessa and Peter’s session at #NCSMRiseUp ! Who knew that Orange and Pink would go so well together. 💕🧡 @themathguru.bsky.social
Reposted by Mandy Jansen
Dr. Ladson-Billings details four things that challenge poor students and students of color in mathematics. So grateful to be learning from her this morning. #NCSM2025 #NCSMRiseUp
October 13, 2025 at 12:29 PM
Dr. Ladson-Billings details four things that challenge poor students and students of color in mathematics. So grateful to be learning from her this morning. #NCSM2025 #NCSMRiseUp
Reposted by Mandy Jansen
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
October 12, 2025 at 11:30 PM
The 400 richest Americans are now worth a record $6.6 trillion.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
The entire bottom 50% of America is worth just $4.2 trillion.
Read that back.
When 400 people control more wealth than half a country’s population, we have a very serious problem.
My undergraduates (middle school math methods) would like advice and insights for teachers' interactions with parents. Teachers or teacher educators, what advice or ideas would you give to these future teachers?
October 8, 2025 at 6:43 PM
My undergraduates (middle school math methods) would like advice and insights for teachers' interactions with parents. Teachers or teacher educators, what advice or ideas would you give to these future teachers?
Reposted by Mandy Jansen
Neighborhood schools are closing across Arizona. It’s because of vouchers.
"The math is simple: Arizona doesn’t provide enough funding to adequately fund one school system, much less two — a public system open to all and a selective private system." @azmirror.com
azmirror.com/2025/10/06/n...
"The math is simple: Arizona doesn’t provide enough funding to adequately fund one school system, much less two — a public system open to all and a selective private system." @azmirror.com
azmirror.com/2025/10/06/n...
Neighborhood schools are closing across Arizona. It's because of vouchers.
OPINION: Arizona's $1 billion voucher program is forcing public school closures while subsidizing wealthy families
azmirror.com
October 8, 2025 at 4:37 PM
Neighborhood schools are closing across Arizona. It’s because of vouchers.
"The math is simple: Arizona doesn’t provide enough funding to adequately fund one school system, much less two — a public system open to all and a selective private system." @azmirror.com
azmirror.com/2025/10/06/n...
"The math is simple: Arizona doesn’t provide enough funding to adequately fund one school system, much less two — a public system open to all and a selective private system." @azmirror.com
azmirror.com/2025/10/06/n...
Reposted by Mandy Jansen
Egg carton fraction pictures, for #fractionchat or #numbertalk in case they're helpful. docs.google.com/document/d/1... Could not get DDG images to give me partial cartons!
Egg fractions
docs.google.com
October 6, 2025 at 8:55 PM
Egg carton fraction pictures, for #fractionchat or #numbertalk in case they're helpful. docs.google.com/document/d/1... Could not get DDG images to give me partial cartons!