Kristen Acosta
@kristenacosta.bsky.social
Math educator of 25 years; #clotheslinemath #3acts, #numbertalkimages, giver of hugs and smiles; music theatre enthusiast, #mtbos #iteachmath, Author of Hanging Math Out to Dry with Elementary Clothesline Math
KristenAcosta.com
KristenAcosta.com
I’m sitting in an AI training. Trainer says “we want to train the AI to sound like you when writing prompts”. What?!? If I wanted it to sound like me… wouldn’t it work if I wrote it myself?!?! Are we leaning in too hard with this AI stuff? It feels inauthentic.
August 11, 2026 at 5:30 PM
I’m sitting in an AI training. Trainer says “we want to train the AI to sound like you when writing prompts”. What?!? If I wanted it to sound like me… wouldn’t it work if I wrote it myself?!?! Are we leaning in too hard with this AI stuff? It feels inauthentic.
Reposted by Kristen Acosta
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
July 22, 2026 at 4:03 PM
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Come join me and @alisonmellomath.bsky.social at #Getyourworkshopon on August 4th. Fun math times ahead!
April 22, 2026 at 2:32 PM
Come join me and @alisonmellomath.bsky.social at #Getyourworkshopon on August 4th. Fun math times ahead!
Ever wonder what it’s like to have a birthday on April Fools’ Day? Let me give you a smile. kristenacosta.com/april-fools-.... #aprilfoolsday #birthday
April Fools Day | KristenAcosta.com
kristenacosta.com
April 1, 2026 at 2:41 AM
Ever wonder what it’s like to have a birthday on April Fools’ Day? Let me give you a smile. kristenacosta.com/april-fools-.... #aprilfoolsday #birthday
Biting, kicking, wandering the classroom: Teachers say there's a rise in misbehavior even among the littlest kids hechingerreport.org/biting-kicki...
I have certainly seen a difference at my school.
I have certainly seen a difference at my school.
Teachers facing more problems with disruptive students
Teachers, districts and states are taking multiple approaches to curb what elementary teachers say is a trend of increasingly severe behavior problems in their classrooms.
hechingerreport.org
February 17, 2026 at 7:49 PM
Biting, kicking, wandering the classroom: Teachers say there's a rise in misbehavior even among the littlest kids hechingerreport.org/biting-kicki...
I have certainly seen a difference at my school.
I have certainly seen a difference at my school.
Teachers got asked to write a definition of number sense. This was one of their answers. (I can't make this up). #numbersense #elemmathchat #elemmath #iteachmath #mtbos🤪
February 10, 2026 at 8:48 PM
Teachers got asked to write a definition of number sense. This was one of their answers. (I can't make this up). #numbersense #elemmathchat #elemmath #iteachmath #mtbos🤪
Reposted by Kristen Acosta
Oh! I love my first glimpse at @kristenacosta.bsky.social 's site! How did I not know about this one? How fun! #ElemMathChat
January 30, 2026 at 2:10 AM
Oh! I love my first glimpse at @kristenacosta.bsky.social 's site! How did I not know about this one? How fun! #ElemMathChat
Reposted by Kristen Acosta
A9 Last week @ryanflessner.bsky.social shared this amazing site that i wan tot use with my teachers! kristenacosta.com/number-talk-... Thanks @kristenacosta.bsky.social ! #elemmathchat
February 6, 2026 at 2:59 AM
A9 Last week @ryanflessner.bsky.social shared this amazing site that i wan tot use with my teachers! kristenacosta.com/number-talk-... Thanks @kristenacosta.bsky.social ! #elemmathchat
Imagine going to a district wide PD on AI for teachers…. And not have WiFi. I can’t make this stuff up. #teacherlife
January 27, 2026 at 12:21 AM
Imagine going to a district wide PD on AI for teachers…. And not have WiFi. I can’t make this stuff up. #teacherlife
Rather than doing New Year’s goals… I asked my class to hat them like more of and less of in the new year. Can’t wait to read them!
January 5, 2026 at 6:08 PM
Rather than doing New Year’s goals… I asked my class to hat them like more of and less of in the new year. Can’t wait to read them!
@jennalaib.bsky.social found you a little something for slow reveal graphs
December 18, 2025 at 2:22 AM
@jennalaib.bsky.social found you a little something for slow reveal graphs
Truly frustrating to sit on a leadership committee & hear that the team wants to use a program that times children with math facts. It was all I could do not to flip a table. Has anybody not listened to a thing I’ve said for 8 years? It’s true- “you can’t be a prophet in your own land.”
a man in a suit and tie is sitting at a table
ALT: a man in a suit and tie is sitting at a table
media.tenor.com
November 19, 2025 at 1:02 AM
Truly frustrating to sit on a leadership committee & hear that the team wants to use a program that times children with math facts. It was all I could do not to flip a table. Has anybody not listened to a thing I’ve said for 8 years? It’s true- “you can’t be a prophet in your own land.”
Reposted by Kristen Acosta
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
November 14, 2025 at 1:13 AM
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
When you have parking lot duty on Halloween… you make people smile!
November 1, 2025 at 12:32 AM
When you have parking lot duty on Halloween… you make people smile!
In honor of the World Series beginning....what questions could be asked? #iteachmath #numbertalkimages #elemmathchat #mtbos #baseballfacts #worldseries
October 21, 2025 at 3:37 PM
In honor of the World Series beginning....what questions could be asked? #iteachmath #numbertalkimages #elemmathchat #mtbos #baseballfacts #worldseries
I was part of a math problem yesterday. Kristen leaves the hotel in Atlanta at 10am EST and doesn’t get home to California (PST) til midnight. How many hours did it take her to get home? #mathiseverywhere
a man is walking down a hallway with a suitcase and a dog .
Alt: a man is walking down a hallway with a suitcase and a dog .
media.tenor.com
October 19, 2025 at 3:35 PM
I was part of a math problem yesterday. Kristen leaves the hotel in Atlanta at 10am EST and doesn’t get home to California (PST) til midnight. How many hours did it take her to get home? #mathiseverywhere
Reposted by Kristen Acosta
First day of #NCTMATL25 is in the books. Excited to continue thinking and learning alongside all of you!
@fawnnguyen.substack.com @cathyfosnot @ryandent @carolmosesson @jennalaib.bsky.social @kristenacosta.bsky.social @anneliserecord.bsky.social
@fawnnguyen.substack.com @cathyfosnot @ryandent @carolmosesson @jennalaib.bsky.social @kristenacosta.bsky.social @anneliserecord.bsky.social
October 17, 2025 at 12:39 PM
First day of #NCTMATL25 is in the books. Excited to continue thinking and learning alongside all of you!
@fawnnguyen.substack.com @cathyfosnot @ryandent @carolmosesson @jennalaib.bsky.social @kristenacosta.bsky.social @anneliserecord.bsky.social
@fawnnguyen.substack.com @cathyfosnot @ryandent @carolmosesson @jennalaib.bsky.social @kristenacosta.bsky.social @anneliserecord.bsky.social
October 17, 2025 at 5:53 PM
September 18, 2025 at 3:35 AM
Reposted by Kristen Acosta
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
September 9, 2025 at 12:22 AM
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
@cmcmath.bsky.social Hey CMC—do you still come to schools and do a day of math with students? We got a grant and we’re looking to spend it? Who do I talk to? #cmc
August 19, 2025 at 3:08 AM
@cmcmath.bsky.social Hey CMC—do you still come to schools and do a day of math with students? We got a grant and we’re looking to spend it? Who do I talk to? #cmc
Reposted by Kristen Acosta
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
July 30, 2025 at 4:03 PM
Looking for a routine that engages your students while building their number sense? Come explore Clothesline Math and how to use it in your classroom.
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...
Learn more about Kristen Acosta's @kristenacosta.bsky.social How To Use Clothesline Math online workshop at grassrootsworkshops.com/wor...