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#mathchat

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Gary Ackerman<p>School math was originally grounded in what was needed for successfully navigating business and commerce. <a href="https://qoto.org/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://qoto.org/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://qoto.org/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a></p>
Gary Ackerman<p>Why do people who are clearly quantitative thinkers and competent at computing become so apologetic and dismissive about the <a href="https://qoto.org/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> abilities? Maybe it time we seriously rethink the damage done in mathematics <a href="https://qoto.org/tags/education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>education</span></a>. <a href="https://qoto.org/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a> <a href="https://qoto.org/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a></p>
Gary Ackerman<p>Jean Lave described how “success in school math” does not predict “success using math in real life.” <a href="https://qoto.org/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://qoto.org/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://qoto.org/tags/edchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>edchat</span></a> <a href="https://qoto.org/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a></p>
Karen Campe<p>Solutions are posted for the May Calendar of Problems! <br>No calendars for summer months, but enjoy some <a href="https://mathstodon.xyz/tags/ProblemSolving" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ProblemSolving</span></a> fun with past calendars anytime! <br><a href="https://mathstodon.xyz/tags/RecreationalMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RecreationalMath</span></a> <a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MathEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEd</span></a> <a href="https://mathstodon.xyz/tags/MathsEdChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEdChat</span></a> <a href="https://mathstodon.xyz/tags/ClassroomMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClassroomMath</span></a></p><p><a href="https://karendcampe.wordpress.com/2025/05/01/may-calendar-problems-3/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">karendcampe.wordpress.com/2025</span><span class="invisible">/05/01/may-calendar-problems-3/</span></a></p>
Gary Ackerman<p>"He who refuses to do arithmetic is doomed to talk nonsense." -John McCarthy seems about right, except for the pronoun. <a href="https://qoto.org/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://qoto.org/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://qoto.org/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a></p>
Karen Campe<p>New blog post! "Mental Math Monday" summarizing last week's question and many different calculation strategies.<br><a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mathstodon.xyz/tags/T3Learns" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>T3Learns</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MentalMathMonday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MentalMathMonday</span></a> <a href="https://mathstodon.xyz/tags/MathStratChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathStratChat</span></a> <a href="https://mathstodon.xyz/tags/ElemMathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElemMathChat</span></a> <a href="https://mathstodon.xyz/tags/MathSky" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathSky</span></a> <a href="https://mathstodon.xyz/tags/MathsToday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsToday</span></a> <a href="https://mathstodon.xyz/tags/ClassroomMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClassroomMath</span></a> </p><p>Thanks to Howie Hua!!!</p><p><a href="https://karendcampe.wordpress.com/2025/04/07/mental-math-monday/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">karendcampe.wordpress.com/2025</span><span class="invisible">/04/07/mental-math-monday/</span></a></p>
Karen Campe<p>‪Karen Campe‬ ‪@karencampe.bsky.social‬<br>·<br>now<br>New blog post! "Mental Math Monday" summarizing last week's question and many different calculation strategies.<br><a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mathstodon.xyz/tags/T3Learns" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>T3Learns</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MentalMathMonday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MentalMathMonday</span></a> <a href="https://mathstodon.xyz/tags/MathStratChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathStratChat</span></a> <a href="https://mathstodon.xyz/tags/ElemMathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElemMathChat</span></a> <a href="https://mathstodon.xyz/tags/MathSky" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathSky</span></a> <a href="https://mathstodon.xyz/tags/MathsToday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsToday</span></a> <a href="https://mathstodon.xyz/tags/ClassroomMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClassroomMath</span></a> </p><p><a href="https://karendcampe.wordpress.com/2025/04/07/mental-math-monday/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">karendcampe.wordpress.com/2025</span><span class="invisible">/04/07/mental-math-monday/</span></a></p>
Colin the Mathmo<p>Every polynomial with real coefficients factors into linear and quadratic terms.</p><p>How much machinery is needed to show this?</p><p>If it crosses the X-axis then it has a linear term.</p><p>If it doesn't cross the X-axis then it is of even degree, and the roots come in complex conjugate pairs.</p><p>What the minimum needed to see this?</p><p><a href="https://mathstodon.xyz/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <br><a href="https://mathstodon.xyz/tags/algebra" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>algebra</span></a> <a href="https://mathstodon.xyz/tags/ComplexNumbers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ComplexNumbers</span></a> <br><a href="https://mathstodon.xyz/tags/MathsChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsChat</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a></p>
Colin the Mathmo<p>I've been thinking about this for ages, but never had the time to craft the words around it.</p><p>People keep saying that "Maths should be fun" ... and I push back with "It should be engaging ... 'fun' is a different thing.</p><p>So <span class="h-card" translate="no"><a href="https://mathstodon.xyz/@rakhichawla" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>rakhichawla</span></a></span> has posted pretty much exactly this, but better than I ever could.</p><p>I'm copying it here with permission.</p><p>Please read this, then as it says at the end ... let's have a deeper conversation about this ...</p><p>1/n</p><p>(PS: I'd love this to get boosted to get outside my bubble ... you're all amazing, but there will be other opinions, and other thoughts that could be helpful or valuable)</p><p>Hashtags: <a href="https://mathstodon.xyz/tags/MathEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEd</span></a> <a href="https://mathstodon.xyz/tags/MathsEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEd</span></a> <a href="https://mathstodon.xyz/tags/MathEdChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEdChat</span></a> <a href="https://mathstodon.xyz/tags/MathsEdChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEdChat</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MathsChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsChat</span></a> <a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/TMWYK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TMWYK</span></a></p>
Colin the Mathmo<p>Fermat conjectured that for \(n\) a non-negative integer, all numbers of the form \(2^{2^n}+1\) are prime.</p><p>Was there ever a worse conjecture in maths than that?</p><p><a href="https://mathstodon.xyz/tags/Maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Maths</span></a> <a href="https://mathstodon.xyz/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <br><a href="https://mathstodon.xyz/tags/MathsEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEd</span></a> <a href="https://mathstodon.xyz/tags/MathEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEd</span></a> <br><a href="https://mathstodon.xyz/tags/MathsChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsChat</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <br><a href="https://mathstodon.xyz/tags/Fermat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Fermat</span></a> <a href="https://mathstodon.xyz/tags/Conjecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Conjecture</span></a> <br><a href="https://mathstodon.xyz/tags/Primes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Primes</span></a> <a href="https://mathstodon.xyz/tags/FermatPrimes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FermatPrimes</span></a></p>
Colin the Mathmo<p>Some time ago ... (A month!) ... there was a thread on Twitter that I think should be shared here. I've been trying to extract and post it semi-automatically, but Twitter just makes it damn near impossible.</p><p>So I'm copying it "by hand"</p><p>Here's a chart of the full conversation:</p><p><a href="https://www.solipsys.co.uk/Chartter/1856750472826085652.svg" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">solipsys.co.uk/Chartter/185675</span><span class="invisible">0472826085652.svg</span></a></p><p>Here's the head of the conversation:</p><p><a href="https://x.com/TweetingCynical/status/1856750459110986045" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">x.com/TweetingCynical/status/1</span><span class="invisible">856750459110986045</span></a></p><p> <br><a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/TMWYK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TMWYK</span></a> <br><a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MathsChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsChat</span></a> <br><a href="https://mathstodon.xyz/tags/MathEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEd</span></a> <a href="https://mathstodon.xyz/tags/MathEdChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEdChat</span></a> <br><a href="https://mathstodon.xyz/tags/MathsEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEd</span></a> <a href="https://mathstodon.xyz/tags/MathsEdChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsEdChat</span></a> </p><p> I will occasionally update the chart of *this* conversation, and it will be here:</p><p><a href="https://www.solipsys.co.uk/Chartodon/TeachingTellingTheTime.svg" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">solipsys.co.uk/Chartodon/Teach</span><span class="invisible">ingTellingTheTime.svg</span></a><br> <br>Here is the content ...</p>
Patrick Diehl<p>Interesting read:</p><p>How to Be Creative: A Practical Guide for the Mathematical Sciences</p><p><a href="https://epubs.siam.org/doi/book/10.1137/1.9781611977035" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">epubs.siam.org/doi/book/10.113</span><span class="invisible">7/1.9781611977035</span></a></p><p><a href="https://mast.hpc.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://mast.hpc.social/tags/matheducation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>matheducation</span></a> <a href="https://mast.hpc.social/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a> <a href="https://mast.hpc.social/tags/bookstodon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bookstodon</span></a></p>
Karen Campe<p>Some fun math "switcheroos":<br>A% of B = B% of A<br>log_b(a) = 1/log_a(b)<br>Sin(A) = Cos(B) in right triangle</p><p>Do you have any others in this style? Would love to add more to this list. <br>{Was awake in the night thinking about the middle one, based on Q posed in a FB group}</p><p><a href="https://mathstodon.xyz/tags/MTBoS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MTBoS</span></a> <a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mathstodon.xyz/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://mathstodon.xyz/tags/MathsChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsChat</span></a></p>
Her Maths Story<p>🌟 Welcome Dr. Lakshmi Chandrasekaran, one of our new team members! 🌟</p><p>We're excited to have her join Her Maths Story, passionate about affecting change in the diversity of STEM representation. Let’s give her a warm welcome! 🌟</p><p><a href="https://mathstodon.xyz/tags/WomenInSTEM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WomenInSTEM</span></a> <a href="https://mathstodon.xyz/tags/scicomm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>scicomm</span></a> <a href="https://mathstodon.xyz/tags/mathchat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathchat</span></a> <a href="https://mathstodon.xyz/tags/HerMathsStory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HerMathsStory</span></a></p>
Journeys In Film<p><a href="https://hcommons.social/tags/OTD" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OTD</span></a> in 1897, the first International Congress of Mathematicians was held in Zürich, Switzerland. The congress even included four women!</p><p>That makes today a great time to point out that we have film-based lesson plans for math classes. — Yes, you can teach math with film!</p><p>Get our free, classroom-ready lesson plans to teach math with films like Hidden Figures (the math of space travel), Like Stars on Earth (the math determining your grade), Whale Rider (Fermi problems) and more.</p><p>Get students of all genders excited about math. Learn more: <a href="https://journeysinfilm.org/articles/teach-math-with-film-for-math-and-stats-month/" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">journeysinfilm.org/articles/te</span><span class="invisible">ach-math-with-film-for-math-and-stats-month/</span></a></p><p>Like all our resources, our math lessons are free for everyone.</p><p><a href="https://hcommons.social/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://hcommons.social/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <a href="https://hcommons.social/tags/Maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Maths</span></a> <a href="https://hcommons.social/tags/Mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mathematics</span></a> <a href="https://hcommons.social/tags/MathEd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathEd</span></a> <a href="https://hcommons.social/tags/MathTeacher" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathTeacher</span></a> <a href="https://hcommons.social/tags/ITeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ITeachMath</span></a> <a href="https://hcommons.social/tags/STEMEducation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>STEMEducation</span></a> <a href="https://hcommons.social/tags/Education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Education</span></a> <a href="https://hcommons.social/tags/Edutooters" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Edutooters</span></a> <a href="https://hcommons.social/tags/HiddenFigures" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HiddenFigures</span></a> <a href="https://hcommons.social/tags/LikeStarsOnEarth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>LikeStarsOnEarth</span></a> <a href="https://hcommons.social/tags/TaareZameenPar" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TaareZameenPar</span></a> <a href="https://hcommons.social/tags/WhaleRider" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>WhaleRider</span></a> <a href="https://hcommons.social/tags/Homeschooling" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Homeschooling</span></a> <span class="h-card"><a href="https://a.gup.pe/u/mathematics" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mathematics</span></a></span> <span class="h-card"><a href="https://a.gup.pe/u/edutooters" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>edutooters</span></a></span> <span class="h-card"><a href="https://a.gup.pe/u/education" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>education</span></a></span></p>
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Journeys In Film

Did you know you can teach mathematics with film? For #CasualPiDay we're highlighting our film guides featuring classroom-ready math lessons for films like Hidden Figures, Like Stars On Earth, Whale Rider and more.

Learn more: journeysinfilm.org/uncategoriz

Like all of our materials, these math resources are available free for everyone.

#PiApproximationDay #MathChat #Math #Maths #Mathematics #MathEd #MathTeacher #ITeachMath #STEMEducation #Education #Edutooters #K12 #K16 #HigherEducation @mathematics @edutooters

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