John Hartmann @jhartedu.bsky.social · 03/02/2026I gifted a meal by taking a photo at Scooter's Coffee with the free @GiftAMeal app. #ScootersCoffee #GiftAMeal api.giftameal.app/local-busine...api.giftameal.appScooter's Coffee helped me GiftAMeal to a family in need!Join us in the fight against hunger. 000
John Hartmann @jhartedu.bsky.social · 20/01/2026I gifted a meal by taking a photo at Scooter's Coffee with the free @GiftAMeal app. #ScootersCoffee #GiftAMeal api.giftameal.app/local-busine...api.giftameal.appScooter's Coffee helped me GiftAMeal to a family in need!Join us in the fight against hunger. 000
Reposted by John HartmannThe Cuisenaire Company @cuisenaireco.bsky.social · 16/01/2026We have now deactivated our X account. Please share our bluesky account with people that have an interest in mathematics education, and maths manipulatives @cuisenaireco.bsky.social #mathseducation #manipulatives #playislearning #pedagogy #cuisenairerods 39356
John Hartmann @jhartedu.bsky.social · 21/11/2025A7. Notice names with numbers attached. Names seem to be in alphabetical order. Wonder if there is a pattern or reason for numbers connected to each name. #ElemMathChat 020
John Hartmann @jhartedu.bsky.social · 21/11/2025A5: We did frayers a lot. Most of the time on a shared slide so kids could "cheat" and see each other's work. Review I used Gimkit to make it fun. Kids would also create the Review questions so they had to write/punctuate/spell correctly. #ElemMathChat 021
John Hartmann @jhartedu.bsky.social · 21/11/2025A4: I used to use pictures to generate 8 parts of speech and writing. Estimysteries pictures, collections/jars could easily be re-used for writing/storytelling #ElemMathChat 131
John Hartmann @jhartedu.bsky.social · 21/11/2025A2: I notice some of these jumpvright put as familiar. 26 letters of alpha, 7 days of week. But others are less known. #ElemMathChat 220
John Hartmann @jhartedu.bsky.social · 21/11/2025A1. Scrabble was always a big ine. I remember the decipher code puzzles too. #ElemMathChat 130
John Hartmann @jhartedu.bsky.social · 21/11/2025Hi all. Long time no chat. But came across this in between kid baths. Stopping in to say howdy. Interventionistfrom STL MO #ElemMathChat 220
Reposted by John HartmannGrassroots Workshops @grassrootsworkshops.com · 14/11/2025Looking 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... 032
John Hartmann @jhartedu.bsky.social · 03/09/2025Thanks to our local Scooters for supporting teachers. Much appreciated. 010
Reposted by John HartmannHowie Hua @howiehua.bsky.social · 01/09/2025It's Mental Math Monday! How would you mentally calculate 15×24? 1381
Reposted by John HartmannDuane Habecker @duanehabecker.com · 28/08/2025Today I helped some teachers come to grips with the fact that their 4th grade math textbook has many lessons that are NOT 4th grade standards. Not only does the book NOT advocate good teaching...it is also teaching the wrong stuff. #CMCforQualityMath #UseHQIM 111
Reposted by John HartmannMelynee Naegele @mnmmath.bsky.social · 26/08/2025📢 #ElemMathChat is back! Sept–May lineup features Joanna Hayman, Dr. Nicki Newton, Marria Carrington, Naomi Dupre-Edelman, Dr. India White, Dee Crescitelli, Jaliyla Fraser & more. Check out the lineup: bit.ly/466q4lf We still have open dates Sign up to lead here: docs.google.com/spreadsheets...bit.lyChat PR 25/26September 4, 2025: Joanna Hayman 📢 #ElemMathChat is back! First chat of the year: Please join us in discussing, Students with disabilities & meaningful math as a human right. With @joannahayman.bsk... 053
Reposted by John Hartmanndrnickinewton.bsky.social @drnickinewton.bsky.social · 24/08/2025👀 Dab, grab, and shout hooray— Number sense is built this way! 🎉 Bingo dots make math a game, Number play will never be the same! #MathFun #EarlyMath 011
Reposted by John HartmannGrassroots Workshops @grassrootsworkshops.com · 15/08/2025If you're a math teacher looking to incorporate an exciting math routine or problem to use with your students, check out our mini workshops from these math educators. Learn more at grassrootsworkshops.com/wor... 002
Reposted by John HartmannEducationPlus @educationplusstl.bsky.social · 08/08/2025Welcome Neighbor STL seeks volunteer tutors for weekly 1-hr in-home English lessons with refugee women in St. Louis. No experience needed—training & materials provided. Sign up: bit.ly/4g6pCmC #ELL #STLedu 012
Reposted by John HartmannHowie Hua @howiehua.bsky.social · 05/07/2025A math "trick" that can make subtraction easier: 55510
Reposted by John HartmannSue O'Connell @sueoconnellmath.bsky.social · 13/06/2025I hope you will join us throughout the summer for this slow chat on strengthening k-5 students’ number skills and number sense. Begins June 16 in the Math in Practice/Sue O’Connell Facebook group. @nctm.org @mathedleaders.bsky.social @heinemannpub.bsky.social #elemmathchat 001
Reposted by John HartmannHowie Hua @howiehua.bsky.social · 04/06/2025As a math teacher, it feels like half of my job is building mathematical confidence. Here are some ways I do this: 4422
John Hartmann @jhartedu.bsky.social · 03/06/2025Had fun at our district math PD. What's wrong with me... it's summer. 🤣 000
Reposted by John Hartmanncompasspd.bsky.social @compasspd.bsky.social · 30/05/2025In this episode of the Compass PD Podcast, Dr. Stephanie Brenner and Dr. Stephanie Evans take a deep dive into the complexities of dyscalculia—a learning difference that affects students' ability to understand and work with numbers. youtu.be/E6uOZLF-9RA 011
Reposted by John HartmannJake Miller @jakemilleredu.bsky.social · 22/05/2025🤩 New #EduDuctTape Episode! 🥳 Today's episode features a conversation I had with Dr. @marcisseks.bsky.social and Dr. Nick Simone of the #StateOfEd Podcast. We talked about AI, motivation, goal orientations, personalized learning, instructional coaching, + more! #edusky episodes.fm/1447821443 031
John Hartmann @jhartedu.bsky.social · 19/05/2025Thoughts on "fraction greater than one" vs "improper fraction" (or both) language for elementary math? #ElemMathChat #MathSky #ITeachMathmedia.tenor.coma man with a beard wearing a red shirt says simple mathALT: a man with a beard wearing a red shirt says simple math 320
Reposted by John HartmannMelynee Naegele @mnmmath.bsky.social · 08/05/2025Join us for the last #ElemMathChat of the school year tonight when Pam Brett @pambrett.bsky.social leads us in discussing, 'Emotions as Catalysts for Beliefs in Math Class' See you at 8pm CST #ElemMathChat 011
Reposted by John HartmannJohn Golden @johngolden.bsky.social · 08/05/2025Commercial board game #mathgame s. www.edutopia.org/article/boar...edutopia.orgUsing Board Games to Teach Math to Young ChildrenPlaying board and card games can improve number sense among children as young as 3—and it’s fun! 072
Reposted by John HartmannEdutopia @edutopia.org · 08/05/2025Playing board and card games can improve number sense among children as young as 3—and it’s fun! 🃏✨ #MathSky #ElementaryTeacher #kindergarten #preschooledut.toUsing Board Games to Teach Math to Young ChildrenPlaying board and card games can improve number sense among children as young as 3—and it’s fun! 093
Reposted by John HartmannRon Martiello @ronmartiello.bsky.social · 06/05/2025🚨 We’re published in Ed Leadership! Dr. Jenna Mancini Rufo & I challenge the myth that you’re either a “math person” or not. Let’s create math classrooms where everyone belongs. 📖 Read: www.ascd.org/blogs/bustin... #UDL #elemmathchat #EveryoneCanDoMathascd.orgBusting Math Myths That Keep Students and Teachers StuckA new school year offers a fresh opportunity to create a classroom environment where every student can develop a positive math identity. 031
Reposted by John HartmannMelynee Naegele @mnmmath.bsky.social · 05/05/2025Join us for the last #ElemMathChat of the school year when Pam Brett @pambrett.bsky.social leads us in discussing, 'Emotions as Catalysts for Beliefs in Math Class' See you at 8pm CST on 5/8/25 #ElemMathChat 032
Reposted by John HartmannKarly Moura @karlymoura.com · 25/04/2025It's never to early to celebrate #Maythe4th & #StarWarsDay! 🪐Dive into the Star Wars galaxy with this interactive Explore Board! Create your own character trading card, learn about lightsabers, translate Yoda-speak, & more! f.mtr.cool/cmmhwwphoz 022
John Hartmann @jhartedu.bsky.social · 25/04/2025LOVE Splats. Especially fraction splats and discussing when fractions greater than one can be more useful than mixed #s. In this case (19-7)/4 #ElemMathChat 010
John Hartmann @jhartedu.bsky.social · 25/04/2025A9: 1 - Always 2- Sometimes but not so in the special case of a square 3 - Sometimes 1/2 of 3 is smaller than a 1/3 of 6. But 1/2 is the largest unit fraction when dealing with the same whole and would never be smaller than a third in that case. #ElemMathChat 010
John Hartmann @jhartedu.bsky.social · 25/04/2025A10: Get rid of decimals. 1.5x18 becomes 3x9 (known fact) Id also consider 5x86 since doubling to 10 makes it simpler and both digits in 86 are even. 10x43 110
John Hartmann @jhartedu.bsky.social · 25/04/2025A0: John from STL MO. Math Interventionist. Today is my wife's birthday so that is joy. But also probably only able to check in tonight. #ElemMathChat 000
Reposted by John Hartmanncompasspd.bsky.social @compasspd.bsky.social · 24/04/2025Exciting news! The Compass PD team will present at the NCTM/NCTE Elementary Joint Conference in Chicago this summer! 🎉 Join our sessions, stop by our table, and see The Comprehensive Standards Guides in person! www.nctm.org/ncte-nctm2025/ #NCTM #NCTE 011
Reposted by John HartmannDuane Habecker @duanehabecker.com · 23/04/2025This article describes a problem I see daily in the math classes I visit. More teachers than we care to admit have only a shaky understanding of the math they teach. Some have a palpable FEAR of math. They deserve better support. #iTeachMath www.edsurge.com/news...edsurge.comIn Elementary School, Many Teachers Have a Shaky Grasp of Math. Can Preparation Programs Change That? | EdSurge NewsElementary school teachers aren’t set up for math. But can changing teacher prep programs help? 042
Reposted by John HartmannHowie Hua @howiehua.bsky.social · 23/04/2025I turned my most boring math lesson into one of my most engaging ones. Here's how: 04712
Reposted by John Hartmanndrnickinewton.bsky.social @drnickinewton.bsky.social · 22/04/2025We have to do math pd. It is essential. All elementary and middle school principals should read this: www.edsurge.com/news/2025-04...edsurge.comIn Elementary School, Many Teachers Have a Shaky Grasp of Math. Can Preparation Programs Change That? - EdSurge NewsElementary school teachers aren’t set up for math. But can changing teacher prep programs help? 153
Reposted by John HartmannRon Martiello @ronmartiello.bsky.social · 22/04/2025#elemmathchat #msmathchat #iteachmath 021
Reposted by John Hartmanncompasspd.bsky.social @compasspd.bsky.social · 21/04/2025Bring clarity and consistency to your School District. Compass PD’s Comprehensive Standards Guides (CSGs) are built directly from your state standards, the tools to deliver aligned instruction, support PLCs and MTSS, and help every student thrive. Confidence. Coherence. Success. #StandardsBased 001
John Hartmann @jhartedu.bsky.social · 20/04/2025Happy Eastermedia.tenor.comhe is risen good morning have a blessed resurrection day posterALT: he is risen good morning have a blessed resurrection day poster 000
John Hartmann @jhartedu.bsky.social · 19/04/2025Maybe the gators were hungry and the larger rabbit was inside. < > = #ElemMathChat 000
Reposted by John HartmannAnn Elise Record @anneliserecord.bsky.social · 18/04/2025Please join me next week during #ElemMathChat as we explore energizers and daily routines that promote reasoning! #ITeachMath 072
Reposted by John HartmannMelynee Naegele @mnmmath.bsky.social · 18/04/2025Please join a great chat on 4/24 at 8pm CST when Ann Elise Record @anneliserecord.bsky.social leads #ElemMathChat See you there! 152