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Alfonso Gonzalez<p>Deepening Students' Mathematical Reasoning in Science When Working With Data – Digital Promise <br><a href="https://techhub.social/tags/SciChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SciChat</span></a> <a href="https://techhub.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://techhub.social/tags/iTeachScience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachScience</span></a> <a href="https://techhub.social/tags/MathChat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathChat</span></a> <a href="https://techhub.social/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <a href="https://techhub.social/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <br><a href="https://digitalpromise.org/2025/07/22/deepening-students-mathematical-reasoning-in-science-when-working-with-data/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">digitalpromise.org/2025/07/22/</span><span class="invisible">deepening-students-mathematical-reasoning-in-science-when-working-with-data/</span></a></p>
dhabecker<p>Join us Thursday, July 17 at 4pm Pacific Time for our next Inspiring Math Minds webinar. Chris Shore will be sharing his wisdom with us all.</p><p>Register for FREE: <a href="https://tinyurl.com/CMC-Webinars" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">tinyurl.com/CMC-Webinars</span><span class="invisible"></span></a></p><p><a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> @cmcmath.bsky.social @CAMathCouncil</p>
Fractal Kitty<p>A new inquiry post on my fractalkitty blog:</p><p><a href="https://www.fractalkitty.com/inquiries-week-3-r-and-rotate/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">fractalkitty.com/inquiries-wee</span><span class="invisible">k-3-r-and-rotate/</span></a></p><p>I started making a separate site for tools as I work on this series, and hope to share more soon. For now, it is under construction. </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/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</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/inquiry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>inquiry</span></a> <a href="https://mathstodon.xyz/tags/interactive" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>interactive</span></a></p>
Andrew D. Hwang<p>Two books by Augustus De Morgan digitized for Project Gutenberg, one about algebra and geometry, the other about calculus. Their style is formal by today's standards, but each may be useful for self-study by students and teachers. Read more:<br><a href="https://www.diffgeom.com/blogs/free-online-math-materials/expositions-by-de-morgan/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">diffgeom.com/blogs/free-online</span><span class="invisible">-math-materials/expositions-by-de-morgan/</span></a><br><a href="https://mathstodon.xyz/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</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/ProjectGutenberg" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ProjectGutenberg</span></a></p>
Andrew D. Hwang<p>"An Invitation to Real Analysis" should be out in October. I hope the book helps students around the globe learn real analysis for many years into the future. In any event, getting to tell this story of numbers, sets, functions, sequences and limits, and function spaces is something I got to do in my time here on earth.</p><p>If you are teaching introductory real analysis in Winter/Spring 2026 or beyond, I am deeply grateful for your consideration. The book was written for courses covering material from basics of sets and proofs at one endpoint to metric spaces and selected applications in function spaces at the other. There are over 600 exercises at all levels of challenge. Selected hints, answers, and solutions are in the back, and a complete solution manual will be available for instructors.</p><p>Throughout, I've striven for readability, simplicity, networks of conceptual connections, and consistency of notation and terminology. Consistency was not as straightforward a goal as I first expected.</p><p>There are a few noteworthy choices--such as using descriptive terms in favor of eponyms, and counting starting from 0--that I believe are features even if at first they seem not to be. Other pedagogical choices include using adversarial games systematically to convey analytic definitions, acknowledging the "foreign language" aspects of analysis, and putting material in strict logical order to the extent possible so readers can easily tell at any stage what concepts and results are available for use.</p><p>I'll post further details, including the publisher's web page for the book, once I'm formally notified.</p><p><a href="https://mathstodon.xyz/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <a href="https://mathstodon.xyz/tags/ITeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ITeachMath</span></a></p>
Andrew D. Hwang<p>Over my years in academia, I helped create a variety of free online mathematical materials. Pirouette is a Spirograph clone that runs in a web browser. I hope you and your students enjoy the software! Read more:</p><p><a href="https://www.diffgeom.com/blogs/free-online-math-materials/pirouette/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">diffgeom.com/blogs/free-online</span><span class="invisible">-math-materials/pirouette/</span></a></p><p><a href="https://mathstodon.xyz/tags/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <a href="https://mathstodon.xyz/tags/MathArt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathArt</span></a> <a href="https://mathstodon.xyz/tags/ITeachmath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ITeachmath</span></a></p>
Karen Campe<p>Here's a real context <a href="https://mathstodon.xyz/tags/geometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geometry</span></a> question on area &amp; volume.</p><p>Home Depot changed the size of their heavy duty small box from last year to this year. </p><p>What has been gained/lost? Why do you think so?</p><p>Old box: 11" x 17" x 11"<br>New box: 12" x 10" x 16"</p><p><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/MathsToday" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathsToday</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/ClassoomMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClassoomMath</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></p>
Fractal Kitty<p>Drafted a 3rd inquiry activity for D3 and D4 play with flips and rotations. </p><p>I am hoping it's not to dry. I'll read through it again tomorrow. </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/dihedral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dihedral</span></a> <a href="https://mathstodon.xyz/tags/grouptheory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>grouptheory</span></a> <a href="https://mathstodon.xyz/tags/iteachmath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iteachmath</span></a></p>
PhET Sims<p>In-person Workshop: Join PhET Fellow Leila Kassim on August 7th to unlock free K-12 &amp; intro college resources, evidence-based strategies, opportunities for extended learning and more! Sign up now to supercharge your lessons!<br>Sign up: <a href="http://bit.ly/3sFnWjX" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">http://</span><span class="">bit.ly/3sFnWjX</span><span class="invisible"></span></a> ✨ <a href="https://mastodon.social/tags/iteachmath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iteachmath</span></a> <a href="https://mastodon.social/tags/iteachphysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iteachphysics</span></a></p>
STEMcoding Project<p>If you're in Austin for the WeTeachCS conference, don't miss our talks!<br>June 9, 9:45am Data Science: How to Thoughtfully Integrate Science, Math and Computer Science <br>June 9, 12:45pm Teaching CS and Math Concepts through Creative Calculations of Pi<br>June 10, 1:30pm Impacting student attitudes about CS through coding integration into science<br><a href="https://mastodon.social/tags/CS4Yall" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CS4Yall</span></a> <a href="https://mastodon.social/tags/CS4All" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CS4All</span></a> <a href="https://mastodon.social/tags/iteachmath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iteachmath</span></a></p>
foldworks<p>Mathematics Teaching 296 now available online <a href="https://atm.org.uk/Mathematics-Teaching-Journal-Archive/177731" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">atm.org.uk/Mathematics-Teachin</span><span class="invisible">g-Journal-Archive/177731</span></a></p><p>Design and cover photographs by me</p><p>Four free articles for non-members:</p><p>Everyone can think mathematically by Tom Francome<br>Tom Francome explores ways of developing the mathematical thinking of all students, including low attainers.<br><a href="https://atm.org.uk/write/MediaUploads/Journals/MT296/02.pdf" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">atm.org.uk/write/MediaUploads/</span><span class="invisible">Journals/MT296/02.pdf</span></a></p><p>Book review Learning with AI by Ian Benson<br>Ian Benson reviews 'Learning with AI' by Joan Monahan Watson published by Johns Hopkins University Press (296 pages, $24.95)<br><a href="https://atm.org.uk/write/MediaUploads/Journals/MT296/14.pdf" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">atm.org.uk/write/MediaUploads/</span><span class="invisible">Journals/MT296/14.pdf</span></a></p><p>Book review Breaking images by Pete Wright<br>Pete Wright reviews ‘Breaking images: Iconoclastic analyses of mathematics and its education’, edited by Brian Greer, David Kollosche, and Ole Skovsmose.<br><a href="https://atm.org.uk/write/MediaUploads/Journals/MT296/15.pdf" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">atm.org.uk/write/MediaUploads/</span><span class="invisible">Journals/MT296/15.pdf</span></a></p><p>Ole Skovsmose—the man who put the critique in critical mathematics education by Peter Gates<br>Peter Gates has collated this obituary for Ole Skovmose.<br><a href="https://atm.org.uk/write/MediaUploads/Journals/MT296/16.pdf" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">atm.org.uk/write/MediaUploads/</span><span class="invisible">Journals/MT296/16.pdf</span></a></p><p><a href="https://mathstodon.xyz/tags/MathematicsTeaching" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MathematicsTeaching</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/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/Math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Math</span></a> <a href="https://mathstodon.xyz/tags/Mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mathematics</span></a> <a href="https://mathstodon.xyz/tags/education" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>education</span></a> <a href="https://mathstodon.xyz/tags/design" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>design</span></a> <a href="https://mathstodon.xyz/tags/GraphicDesign" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GraphicDesign</span></a> <a href="https://mathstodon.xyz/tags/atm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>atm</span></a> <a href="https://mathstodon.xyz/tags/MT" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MT</span></a> <a href="https://mathstodon.xyz/tags/MT296" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MT296</span></a> <a href="https://mathstodon.xyz/tags/photography" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>photography</span></a></p>
Fractal Kitty<p>I have a new blog post for an inquiry activity on modular arithmetic with The Fibonacci Sequence. </p><p>There is a musical toy for listening to patterns. </p><p>I regret not drawing a pigeon for this. It may be a later addition. </p><p><a href="https://www.fractalkitty.com/inquiries-week-2-modular-fibonacci/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">fractalkitty.com/inquiries-wee</span><span class="invisible">k-2-modular-fibonacci/</span></a></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/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</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/pigeonhole" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pigeonhole</span></a> <a href="https://mathstodon.xyz/tags/fibonadci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fibonadci</span></a> <a href="https://mathstodon.xyz/tags/pisano" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pisano</span></a> <a href="https://mathstodon.xyz/tags/indieweb" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>indieweb</span></a></p>
foldworksspoiler
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Fractal Kitty<p>I am starting a new series on the blog for inquiries in math. I posted the first one today:</p><p><a href="https://www.fractalkitty.com/inquiries-week-1-circle-shading/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">fractalkitty.com/inquiries-wee</span><span class="invisible">k-1-circle-shading/</span></a></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/circles" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>circles</span></a> <a href="https://mathstodon.xyz/tags/graphtheory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>graphtheory</span></a> <a href="https://mathstodon.xyz/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a></p>
∞ 𝕁uan ℂarlos<p>🤩 what a gem 💎 from @geogebra. Probability distributions app:<br><a href="https://www.geogebra.org/classic#probability" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">geogebra.org/classic#probabili</span><span class="invisible">ty</span></a><br><a href="https://mathstodon.xyz/tags/probability" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>probability</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/visualization" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>visualization</span></a></p>
PhET Sims<p>What is better than 1 new PhET sim? 🤔 TWO new PhET sims! 🥳<br>🚀 Double the learning, double the fun! We're thrilled to announce the publication of TWO new simulations:</p><p>⚛️ Quantum Measurement: <a href="https://phet.colorado.edu/en/simulations/quantum-measurement/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">phet.colorado.edu/en/simulatio</span><span class="invisible">ns/quantum-measurement/</span></a><br>🔢 Number Pairs: <a href="https://phet.colorado.edu/en/simulations/number-pairs/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">phet.colorado.edu/en/simulatio</span><span class="invisible">ns/number-pairs/</span></a><br><a href="https://mastodon.social/tags/iTeachPhysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachPhysics</span></a> <a href="https://mastodon.social/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mastodon.social/tags/eduSky" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>eduSky</span></a></p>
Dr. Paulette Vincent-Ruz<p>Hi <a class="hashtag" href="https://bsky.app/search?q=%23MathEdu" rel="nofollow noopener" target="_blank">#MathEdu</a> and <a class="hashtag" href="https://bsky.app/search?q=%23ITeachMath" rel="nofollow noopener" target="_blank">#ITeachMath</a> colleagues.Is there any research about solving math by hand (professor solving in a whiteboard or even an ipad but writing down the solution to explain) vs just using a slide showing the solution (even if appearing in steps). My intuition says first is better for students</p>
dhabecker<p>CMC knows that high-quality instructions material make a different for both teachers AND students!</p><p>@CAMathCouncil @cmcmath.bsky.social <a href="https://mathstodon.xyz/tags/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> </p><p>Join us in this essential work.</p><p><a href="http://cmcmath.org" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">http://</span><span class="">cmcmath.org</span><span class="invisible"></span></a></p>
Karen Campe<p>Such fun to put together this month's Carnival of Math post! <br>Thanks to:<br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@drMathArt" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>drMathArt</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@tao" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>tao</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@johndcook" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>johndcook</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@JimPropp" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>JimPropp</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@divbyzero" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>divbyzero</span></a></span> Joel David Hamkins<br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@icecolbeveridge" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>icecolbeveridge</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@stecks" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>stecks</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@TMiP" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>TMiP</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@aperiodical" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>aperiodical</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@carnivalofmaths" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>carnivalofmaths</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@grant" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>grant</span></a></span> <br>James Tanton<br>Chris Smith<br>Zack Wissner-Gross<br>Peter Cameron<br>Gil Kalai<br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@joshg" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>joshg</span></a></span> <br>Mark Willis<br>Annie Forest<br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@jennalaib" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>jennalaib</span></a></span> <span class="h-card" translate="no"><a href="https://mathstodon.xyz/@davidwees" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>davidwees</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@mathhombre" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>mathhombre</span></a></span> <br><span class="h-card" translate="no"><a href="https://mathstodon.xyz/@dylankane" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>dylankane</span></a></span> <br>Sara Van Der Werf<br>Ben Orlin<br>Mark Willis<br>Kurt Salisbury <br>Brad Ballinger<br>David Renshaw</p><p>Check out the whole post, link above ^^</p><p><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/iTeachMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>iTeachMath</span></a> <a href="https://mathstodon.xyz/tags/RecreationalMath" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RecreationalMath</span></a></p>