The solutions are posted for the May #ProblemSolving calendar! We'll take summer off, but visit calendar posts on my website for #math enjoyment anytime. Share working-out thoughts here/on each post. #RecreationalMath #iTeachMath #MTBoS #T3Learns #MathSky karendcampe.wordpress.com/2026/05/01/m...

Number lines in Spain! Two sets of elevator buttons including 0 and -1. And the kilometer 0 marker in Madrid... the start of all the road distances in Spain. #iTeachMath #MTBoS #tmwyk

Had convos w/ multiple people in the past 4 days who DID NOT KNOW that 1. AI doesn't "think" or know anything; it's a probability machine 2. It was created using massive amounts of work stolen from actual people including me 3. The environmental costs are astronomical Spread the word, every time!

Webinar tonight! Learn about the new TI-84 Evo. #TI84 @ticalculators.bsky.social #iTeachMath #T3Learns 😮 Bring your curiosity and explore the TI-84 Evo with us for a free, live webinar on Tuesday, May 5, 7 p.m. CT. bit.ly/4d4bGfA

#MathSky #iTeachMath

The May #ProblemSolving Calendar is here! Solve yourself or w/your students & share your working-out thoughts here or on the blog. *special theme* -- Function Composition #Algebra2 #precalculus #iTeachMath #MTBoS #T3Learns #RecreationalMath #MathsToday karendcampe.wordpress.com/2026/05/01/m...

Solutions posted to #ProblemSolving calendar! #iTeachMath #RecreationalMath

What's your favorite from the April Calendar of problems? Solutions coming tomorrow & May Calendar on Friday... #ProblemSolving #iTeachMath #RecreationalMath karendcampe.wordpress.com/2026/04/01/a...

ICYMI, post about handling radicals/surds in #Algebra2. With help from @studymaths.bsky.social, Ben Orlin (Math With Bad Drawings), @stevemaths.bsky.social, Brett Berry, John Chase @mrchasemath, THANKS! #iTeachMath #MTBoS #T3Learns #MathsToday

In case you have been under a rock in the US and haven't heard about the math errors put out there. You can *never* have a 600% decrease because you can't decrease more than 100% of an amount... 100% is the whole amount. Check out the updates on this post. #iTeachMath

Going up by 600% means 7x as much, bc we add 6x original to original amount. Going from $600 to $10 is amount of change div by original amount --> 590/600 = 98.3% decrease. I updated my "Prime Percents" post explaining successive percent changes #iTeachMath karendcampe.wordpress.com/2024/07/26/p...

New blog post! "Really Radical" talks about how to handle teaching a tough topic in #algebra2 so students aren't lost in the weeds. #iTeachMath #MTBoS #T3Learns #MathsToday karendcampe.wordpress.com/2026/04/22/r...

Right now!! Come to the Math Routine Collaborative!! #iTeachMath

Hot take: the derivative & antiderivative rules for x^n should be called the "Polynomial Rule" not the "Power Rule". Bc my #calculus students keep trying to use these rules on e^x and a^x ... 🤷‍♀️😱 Thankfully mostly for integration, derivatives they seem to have down cold. #iTeachMath

I'm telling you, the solution to many problems in education is to hire school librarians (at a liveable wage, with administrative support, and adequate resources). Your students don't need an LLM, they need a librarian.

[New Post] Ontario Math Links - My Favourite #math related links from this week: ontariomath.blogspot.com/2026/04/math... Links and help from @howiehua.bsky.social @karencampe.bsky.social @mathsjem.bsky.social @mathsvault.bsky.social @tilefarmer.bsky.social and more #MathChat #MTBoS #iTeachMath

Math-y bumper stickers (spotted at a stoplight). What do you notice? What do you wonder? #iTeachMath #NoticeWonder

The April #ProblemSolving Calendar is posted & that's no fooling!! Plus March solutions as well. Share your working out & thoughts here or on the post. #iTeachMath #MTBoS #MathsToday #RecreationalMath #MathSky karendcampe.wordpress.com/2026/04/01/a...

Hi there #iTeachMath folks. Need probability help: If 1 snack jar has 12 cookies & 6 pretzels, 2nd jar has 9 cookies & 8 pretzels, if I choose 1 item, what is P(pretzel)?? Is it (1/2)(6/18) + (1/2)(8/17) bc have to choose jar before item? Or (6+8)/(18+17) bc pretzel/total? seems wrong bc not 1 jar

Hi #ElemMathChat the Math Routine Collaborative might interest you! 2.5 hours away today (sign up at strongermath.com/mrc

Join us today at 4 pm EDT!! Learn about using the Same and Different routine in #math class. #iTeachMath #MTBoS

Join us today at 4 pm EDT!! Learn about using the Same and Different routine in #math class. #iTeachMath #MTBoS

Pi day #PiDay is a great day for #ProblemSolving !! Check out the March Calendar of problems and share your working out thoughts here or on the post. #iTeachMath #MTBoS #T3Learns #RecreationalMath #MathSky karendcampe.wordpress.com/2026/03/01/m...

Join us Sunday! Math Routine Collaborative with @sneffleupagus.bsky.social @mathillustrated.bsky.social @mfannie.bsky.social and me! #MTBoS #iTeachMath

I finally lost my shit about so-called AIs, LLMs, enshittification & everything fucking evil that @officialgrammarly.bsky.social is doing. I'm fucking furious, and not just about what 1 company has done. An open letter to Grammarly & the rest of the LLM hype machine www.moryan.com/an-open-lett...

[New Post] Ontario Math Links - My favourite #math related links from this week: ontariomath.blogspot.com/2026/03/math... links and help from @karencampe.bsky.social @howiehua.bsky.social @veganjackson.bsky.social and more #MathChat #MTBoS #iTeachMath

#iTeachMath #MTBoS

The March Calendar of Problems is here! Enjoy some #ProblemSolving yourself or with students. Let us know your thoughts & working-out here or on post. #MTBoS #iTeachMath #T3Learns #RecreationalMath #MathSky #MathsToday karendcampe.wordpress.com/2026/03/01/m...

Solutions now posted for the February Calendar of Problems! Check out the #ProblemSolving fun and stay tuned for March coming tomorrow! #MTBoS #iTeachMath #T3Learns #RecreationalMath karendcampe.wordpress.com/2026/02/01/f...

New blog post! "Reflecting on 10 Years of 'Reflections and Tangents' " Catch up on 10 years of #math posts & consider subscribing so you never miss a new one! #MTBoS #iTeachMath #T3Learns #MathsToday #MathSky karendcampe.wordpress.com/2026/02/26/r...

There is no sense in which a chatbot can "help" with your schoolwork by making it easier; if it is easier, it is less useful for actual learning (effortful practice is HOW WE LEARN) and therefore the chatbot has not helped, but has only hindered.

How about #ProblemSolving #SnowDay? #iTeachMath

Let's do #ProblemSolving Sunday... which of this past week's problems did you try? Here are some from the February calendar (link in 1st comment) #MTBoS #iTeachMath #T3Learns #RecreationalMath #MathSky

[New Post] Ontario Math Links - My favourite #math related links from this week: ontariomath.blogspot.com/2026/02/math... Links and help from @colleenyoung.bsky.social @karencampe.bsky.social @alicekeeler.com @howiehua.bsky.social @johngolden.bsky.social and more #MathChat #MTBoS #iTeachMath

Happy Valentine’s Day! ❤️ What a great day kicking things off as the opening keynote at #T3IC! #MathIsFigureOutAble #MathChat #MTBoS #ITeachMath #T3IC2026

@pwharris keynote at #T3IC telling us Math is Figure-Out-Able, can we find patterns and do some "mathing" to avoid the trap of algorithms. What mental actions are involved in this reasoning? @ticalculators.bsky.social #iTeachMath

Happy multiplication day! 2/13/26 or 13/2/26 When is the next one? How many this month? This year? #MTBoS #iTeachMath #T3Learns

It's almost Valentine's Day, grab some candy conversation hearts and explore exponential models in math class! "I ❤️ Candy Math!" #MTBoS #iTeachMath #T3Learns #MathsToday karendcampe.wordpress.com/2022/02/10/i...

It's almost Valentine's Day, grab some candy conversation hearts and explore exponential models in math class! "I ❤️ Candy Math!" #MTBoS #iTeachMath #T3Learns #MathsToday karendcampe.wordpress.com/2022/02/10/i...

New Blog Post: "Making the Most of Probability!" Doing simulations on the TI84 to enliven probability concepts in math class. #MTBoS #iTeachMath #MathsToday #T3Learns @ticalculators.bsky.social karendcampe.wordpress.com/2026/02/09/m...

It's a SUPER day for #ProblemSolving Sunday! Check out the February Calendar of Problems... which ones did you like from this past week? Share your thinking & working out here or on the post. #MTBoS #iTeachMath #T3Learns #RecreationalMath #MathSky karendcampe.wordpress.com/2026/02/01/f...

Tomorrow is "e" day if you look at the date as 2-7. Here are some ideas for your high school math class... #MTBoS #iTeachMath karendcampe.wordpress.com/2024/02/07/e...

Lovely #geometry puzzle for your Saturday. Thanks Catriona! #iTeachMath #MTBoS #RecreationalMath #MathsToday

Time for winter #ProblemSolving! Here's the February Calendar of Problems for you and your students. Tell us your working out here or on the post. ENJOY! #MTBoS #iTeachMath #RecreationalMath #MathSky #MathsToday #T3Learns karendcampe.wordpress.com/2026/02/01/f...

Solutions to the January #ProblemSolving Calendar are posted! Stay tuned for February calendar coming tomorrow... #RecreationalMath #MTBoS #iTeachMath #MathSky #MathsToday karendcampe.wordpress.com/2026/01/01/j...

Apparently it's National Puzzle Day! My new favorite puzzle apps are OneUpPuzzle.com - a sudoku variant with extra "fences", and Jigsy.app - a visual grid-filling puzzle with rotation/scaling of pieces to fit. Enjoy! #Puzzles #RecreationalMath #PuzzleDay

Have a #ProblemSolving snow day if school is closed today! #MTBoS #iTeachMath #RecreationalMath

Snowy days are great for #ProblemSolving ! Here's this weekend's calendar problems, I like these bc they have easy entry points for students (& no clear algorithm) Tell your thoughts below or on post, full calendar linked below. #MTBoS #iTeachMath #T3Learns #RecreationalMath #MathsToday #MathSky

Anyone want to do #ProblemSolving Sunday? This is today's problem from the January calendar. Share how you think about this one or any of the problems from past week. [link to full calendar in comments] #MTBoS #iTeachMath #MathSky #MathsToday #RecreationalMath