Fàbrica de rectangles 🔨
👉🏼 Selecciona tres dígits de l'1 al 6, com a màxim una vegada cadascun i col·loca’n un a cada casella per fer el rectangle més petit i més gran possibles
🔗 Proposta de @robertkaplinsky a @openmiddle a openmiddle.com/multiplying-a…
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I have created lots of video sharing @openmiddle problems using a lightboard on Instagram and TikTok. Here's an example.
I'd appreciate you following me there as I'm not using Twitter as often anymore.
Instagram: instagram.com/robert_kaplins…
TikTok: tiktok.com/@robertkaplinsky
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If you're a fan of the problems on @openmiddle (openmiddle.com) or you've ever considered making a problem of your own, you'll want to download this file to help you make the images so much more quickly.
robertkaplinsky.com/open-mid…
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Feb 22
Directions: Make 47¢ using exactly 6 coins with either quarters, dimes, nickels, or pennies.
👉 openmiddle.com/making-change…
#OpenMiddle #MathChat
ALT coins showing an open middle problem
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Feb 14
👾 Activity: Have the students see how close to 500 they can get.
I made a FigJam version.
figma.com/community/file/130…
#GoogleEDU #FigJamEdu #ITeachMath @alex_figmaedu
Original
@openmiddle
openmiddle.com/multiplying-m…
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Feb 3
🤯 Problemas matemáticos de "Open Middle" | La visita de Robert Kaplinsky.
¿Has usado algún problema de @openmiddle? Tuve la oportunidad de hacer una clase con @robertkaplinsky con uno de sus problemas y aquí van algunas de mis reflexiones: open.substack.com/pub/lauram…
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Jan 28
This quote from HamiltonHeroes shows how students can't get enough Open Middle problems.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu
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Jan 9
Hoy hemos tenido el privilegio de recibir a @RobertKaplinsky, uno de los grandes referentes internacionales 🌍 en didáctica de las matemáticas e impulsor de los problemas @OpenMiddle. ¡Una visita muy especial! ✨
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Jan 9
Avui hem tingut el privilegi de compartir una jornada amb el @robertkaplinsky, un dels grans referents internacionals 🌍 en didàctica de les matemàtiques i impulsor dels problemes @OpenMiddle. Una visita molt especial! ✨
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Jan 7
This quote from Marty Joyce shows how Open Middle problems get everyone talking - even those who don't usually.
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu
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If you enjoy using my real world problem-based lessons or the problems I share on @openmiddle, then you should check out my online workshop where share my favorite tips for using them.
robertkaplinsky.com/eps #epsworkshop
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12 Dec 2025
Aconsegueix desenes ⚙️
👉🏼 Fes servir les xifres de l’1 al 6 sense repetir-ne cap per completar aquesta suma que s’apropi a l’objectiu. De quines maneres ho pots fer? Què hi veus?
🟦🟦 ➕ 🟦🟦
🔗 Proposta a 2n de primària de @gfletchy a @openmiddle a openmiddle.com/sums-to-100/
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11 Dec 2025
This is one of the most adorable thank you cards I've ever received. It comes from Ms. Lemos' students who are big fans of @openmiddle . I'm so honored by such a thoughtful gesture!
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2 Dec 2025
LOL, yes, Tatiana was all up in the video trying to get her 15 seconds of fame.😹😹😹
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2 Dec 2025
This is one of the most adorable thank you cards I've ever received. It comes from Ms. Lemos' students who are big fans of @openmiddle . I'm so honored by such a thoughtful gesture!
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27 Nov 2025
Interested in challenging your students with higher Depth of Knowledge problems? Then you'll enjoy my reflection on a 3-step process I often use to create @openmiddle problems.
robertkaplinsky.com/create-h…
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18 Nov 2025
Directions: Make 47¢ using exactly 6 coins with either quarters, dimes, nickels, or pennies.
👉 openmiddle.com/making-change…
#OpenMiddle #MathChat
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18 Nov 2025
Oh this was a fun surprise. I was looking up some openmiddle.com math questions and I stubbled upon one that my student and I created together and submitted.
👉 openmiddle.com/what-is-it-no…
#OpenMiddle #MathChat
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17 Oct 2025
Good morning, #NCTMATL25! Start your day with a 9:30 AM book signing at booth #1733 with @robertkaplinsky, author of Open Middle Math! @openmiddle @NCTM
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14 Oct 2025
This quote from Kristen Leiker shows how Open Middle gets students engaged in math!
#iteachmath #teacher #teachers #teacherlife #math #mathteacher #matheducation #openmiddlemath #openmiddle #learning #criticalthinking #teacherhacks #teacherhack #edu
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