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.)
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?
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
Are you a middle school mathematics teacher who has read Rough Draft Math or would like to? If so, would you like to be in a research study? You do not have to live in Delaware Please email me or DM me! Please share!
May 28, 2025 at 3:01 PM
Are you a middle school mathematics teacher who has read Rough Draft Math or would like to? If so, would you like to be in a research study? You do not have to live in Delaware Please email me or DM me! Please share!
Celebrate my birthday (4/27) by donating! Here is a direct link if you want to donate to support my research group: givingday.udel.edu/giving-day/9...
Your generosity will pay middle school teachers for their time that they sprend learning together about rough drafting and revising in math class.
Your generosity will pay middle school teachers for their time that they sprend learning together about rough drafting and revising in math class.
April 27, 2025 at 6:56 PM
Celebrate my birthday (4/27) by donating! Here is a direct link if you want to donate to support my research group: givingday.udel.edu/giving-day/9...
Your generosity will pay middle school teachers for their time that they sprend learning together about rough drafting and revising in math class.
Your generosity will pay middle school teachers for their time that they sprend learning together about rough drafting and revising in math class.
It is my birthday! Maybe you would consider supporting my research team? givingday.udel.edu/giving-day/9...
April 27, 2025 at 1:00 PM
It is my birthday! Maybe you would consider supporting my research team? givingday.udel.edu/giving-day/9...
Integrating Torres’s Rights of the Learner into mathematics classrooms (and living them out) honors our students’ identities and helps us truly see and hear one another. ❤️
February 8, 2025 at 6:41 PM
Integrating Torres’s Rights of the Learner into mathematics classrooms (and living them out) honors our students’ identities and helps us truly see and hear one another. ❤️
At AMTE, Lateefah Id-Deen asked us to share an image, meme, or gesture that illustrates a non-transactional relationship. This is what I shared.
February 6, 2025 at 4:56 PM
At AMTE, Lateefah Id-Deen asked us to share an image, meme, or gesture that illustrates a non-transactional relationship. This is what I shared.
Happy to be attending a screening of the film "Counted Out." www.countedoutfilm.com
February 2, 2025 at 6:18 PM
Happy to be attending a screening of the film "Counted Out." www.countedoutfilm.com
Saw this chaotic display at an antique shop in Provo, Utah, on Tuesday.
January 31, 2025 at 12:55 AM
Saw this chaotic display at an antique shop in Provo, Utah, on Tuesday.
From my airplane window as I landed in Provo, Utah. ✈️
January 26, 2025 at 11:31 PM
From my airplane window as I landed in Provo, Utah. ✈️
Winter sunset @drteyar.bsky.social’s house!
December 7, 2024 at 10:22 PM
Winter sunset @drteyar.bsky.social’s house!
New article announcement: Along with Meg Botello and @elenamsilla.bsky.social, we write about small changes that teachers reported in their after participating in a conference presentation about rough draft math (see figure below). (Alt text restates ideas in figure.)
www.mdpi.com/2227-7102/14...
www.mdpi.com/2227-7102/14...
December 6, 2024 at 11:39 AM
New article announcement: Along with Meg Botello and @elenamsilla.bsky.social, we write about small changes that teachers reported in their after participating in a conference presentation about rough draft math (see figure below). (Alt text restates ideas in figure.)
www.mdpi.com/2227-7102/14...
www.mdpi.com/2227-7102/14...
Thanks to my boyfriend, Mark, for these flowers! 🌹 Two years together! ♥️
December 2, 2024 at 2:41 PM
Thanks to my boyfriend, Mark, for these flowers! 🌹 Two years together! ♥️
My niece, Kate, navigates the world in a wheelchair. Yesterday she told me how one of her teachers has a poster that says that everyone belongs in that classroom. She said that the poster is not true. The room is set up so that Kate cannot get around in it very well. (Kate is in sixth grade.)
November 29, 2024 at 3:37 PM
My niece, Kate, navigates the world in a wheelchair. Yesterday she told me how one of her teachers has a poster that says that everyone belongs in that classroom. She said that the poster is not true. The room is set up so that Kate cannot get around in it very well. (Kate is in sixth grade.)
It is with a heavy heart that I share that my dear sister, Laura Anne Ellersick, passed away suddenly at her home on Tuesday, November 26, 2024. She was 47 years old.
www.giveinkind.com/inkinds/N7A0...
We have set up a site to support her husband, Chris, and her daughter, Kate (age 11).
www.giveinkind.com/inkinds/N7A0...
We have set up a site to support her husband, Chris, and her daughter, Kate (age 11).
November 29, 2024 at 1:34 AM
It is with a heavy heart that I share that my dear sister, Laura Anne Ellersick, passed away suddenly at her home on Tuesday, November 26, 2024. She was 47 years old.
www.giveinkind.com/inkinds/N7A0...
We have set up a site to support her husband, Chris, and her daughter, Kate (age 11).
www.giveinkind.com/inkinds/N7A0...
We have set up a site to support her husband, Chris, and her daughter, Kate (age 11).
Good morning from the beach!
November 25, 2024 at 12:23 PM
Good morning from the beach!
A little treat I like to give myself is to take the train into NYC (from Wilmington, DE), have a yummy lunch, catch a matinee, walk around the city, get dinner at the train hall, and head back! I am going back on December 8 to see Maybe Happy Ending with Darren Criss! What do you do for a treat?
November 18, 2024 at 12:59 AM
A little treat I like to give myself is to take the train into NYC (from Wilmington, DE), have a yummy lunch, catch a matinee, walk around the city, get dinner at the train hall, and head back! I am going back on December 8 to see Maybe Happy Ending with Darren Criss! What do you do for a treat?
In Hell’s Kitchen to see this show - off Broadway. Peep the cast: mcctheater.org/tix/shit-mee...
November 17, 2024 at 6:59 PM
In Hell’s Kitchen to see this show - off Broadway. Peep the cast: mcctheater.org/tix/shit-mee...
Nature is beautiful! Look at the hexagons! (Photo courtesy of Charles Hohensee.)
November 16, 2024 at 4:46 PM
Nature is beautiful! Look at the hexagons! (Photo courtesy of Charles Hohensee.)
In the hallways at the University of Delaware… made by one of my colleagues, Charles Hohensee, and his doctoral students.
November 15, 2024 at 1:28 PM
In the hallways at the University of Delaware… made by one of my colleagues, Charles Hohensee, and his doctoral students.
Hi! I teach a math for teachers class. This is a double number line diagram that a student used to solve a partial groups division problem (2 and 1/4 divided by 3/5) from class today! #iteachmath #MTBoS
November 14, 2024 at 4:43 PM
Hi! I teach a math for teachers class. This is a double number line diagram that a student used to solve a partial groups division problem (2 and 1/4 divided by 3/5) from class today! #iteachmath #MTBoS
Cinnamon roll bigger than your face! @mathematize4all.bsky.social at Sherman’s in Palm Springs, CA
November 7, 2024 at 7:10 PM
Cinnamon roll bigger than your face! @mathematize4all.bsky.social at Sherman’s in Palm Springs, CA