Hi! In July I'm once again running a free online program for K-12 math teachers called "21st century mathematics". Its goal is to help teachers to connect math they teach with some math that has been discovered in the 21st century. Pass it along! Info+register: justinlanier.org/21st-century...

Pedagogy First, Technology Second: The Complete Free Guide Last week I said I'd say more on the day. Today is the day. When I started this six weeks ago, I wasn't sure how it would go. The idea was simple enough: take the areas of teaching and learning that matter most, retrieval, formative…

Officially reupped my Level 1 AI Certificate! 🎓✨ Just completed the Foundational AI Certification Course by @magicschoolai.bsky.social. Excited to bring these magic AI tools into the classroom to save time and better support my students. Let the magic begin! #AIinEd #EdTech

What a season of #DiffitSpringRemix! 🌸📈 From Star Wars data to AAPI wealth gaps, we’ve used @diffitapp.bsky.social to turn math topics into classroom-ready labs. My biggest win? Getting some time back while deepening student engagement. Here’s to #DiffitAmbassador life! 🚀✨

Saturday is #NationalCreativityDay🎨✨ To prepare, I used @DiffitApp to build this Choice Board for #StatsChat. It offers students agency in their review while hitting key inference standards🚀📈 Check it out: tinyurl.com/2z7dpapy #DiffitSpringRemix #DiffitAmbassador

I just finished working on a Gallery Walk activity with a #StatsChat T. We used @diffitapp.bsky.social to help Ss practice Chi-Square Goodness of Fit. Check it out: bit.ly/4wSI9yK #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS #EduSky

Introducing Desmos Notebook (beta), our newest tool that combines text, expressions, sliders, and graphs all in one place. As you get to know Notebook, we’d love to hear your feedback, feature requests, and any bugs you find. We can’t wait to see what you create! #iteachmath #mathsky #iteachphysics

Prep for Culture Day is done! Saved so much time using @diffitapp.bsky.social to create these "Global Payments & Probability" stations. It connects world cultures & math perfectly! Fast/relevant resources are key. #DiffitSpringRemix #DiffitAmbassador Check it out: tinyurl.com/9b9sdvnb #iTeachMath

This is such a good example of how Diffit can create (slides/stations/assessments/etc.)—go check it out! #DiffitSpringRemix #DiffitAmbassador www.instagram.com/p/C2pvsCUx7m...

Celebrate #WorldBeeDay tomorrow with inference! 🐝🌻 I used @diffitapp.bsky.social to create a t-test for slope on the decline of honeybee colonies. Check it out: tinyurl.com/3c28huze 📊📉 #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS #EduSky

Is there an association between age and art? 🏛️🤔 Monday is #InternationalMuseumDay. To prep, I used @diffitapp.bsky.social to create Chi-Square Tests for Independence to find out 📈 Check it out: tinyurl.com/4kh2ebzx #DiffitSpringRemix #DiffitAmbassador #MTBoS #iTeachMath #EduSky

Tomorrow is #MentalHealthActionDay, my action is protecting my time. 💛✅ I’m not working late because I used @diffitapp.bsky.social to modify this #StatsChat station rotation in minutes. 📊 Better for my students and better for my peace of mind. #DiffitSpringRemix #DiffitAmbassador #EduSky

I just finished working on a 5-station Gallery Walk activity with a #StatsChat T. We used @DiffitApp to help Ss practice calculating sample size for population means. Check it out: tinyurl.com/439jn6ej #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS #EduSky

Need to create a quick set of stations? @diffitapp.bsky.social can help. Check out how to go from learning target to printable in minutes #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS #EduSky

🎶 For #NationalLimerickDay tomorrow, my students will be using anapestic meter to explain credit. I used @diffitapp.bsky.social to build this workshop with rhyme 🎭✍️ #DiffitSpringRemix #DiffitAmbassador #FinLit Check it out: tinyurl.com/ycxwxef9 #iTeachMath #MTBoS #EduSky

💐 In honor of #MothersDay I used @diffitapp.bsky.social to remix #StatsChat and appreciation through making greeting cards. "Your kindness is many standard deviations above the mean." 📈 Check it out: tinyurl.com/mk2e7d7h #DiffitSpringRemix #DiffitAmbassador #MTBoS #iTeachMath #EduSky

There was Mathalicious v1.0 and Citizen Math v2.0. Today we launched Version Free Point Ooh. 🩵 www.citizenmath.com If you loved our real-world lessons but got tired of administrative funding whims determining your access, welcome back. I think you'll like it here. #EduSky #MathSky #RealWorldMath

This is what reclaiming an evening looks like. ⏳🧘‍♀️ My win for #MentalHealthMonth is @diffitapp.bsky.social I COULD spend hours on thin-slicing problem sets. Now? I LEVERAGE Diffit, and I have a scaffolded set in less time. #DiffitAmbassador #TeacherSelfCare #DiffitSpringRemix

[email protected] (citizenmath.com) just did something wild. The entire library -- every one of their thoughtfully, beautifully crafted lessons -- is now free.

For those of you who were using Seesaw for student portfolios/feedback/SBG, what’s the new alternative platform (now that Seesaw doesn’t allow individual teacher accounts for multiple classes)? #iteachmath #mtbos

May is #AAPIHMonth. I used @diffitapp.bsky.social to create an AAPI Wealth Inequality activity for students to see how subgroups can create a high σ that hides detail. 🚀 Check it out: tinyurl.com/yc4hpzjv #DiffitSpringRemix #DiffitAmbassador #StatsChat #EduSky #MTBos #iTeachMath

Tomorrow is #NationalBikeToSchoolDay. To celebrate I used @diffitapp.bsky.social to an inference lab using paired data to find the impact of a bike lane. Check it out: tinyurl.com/p9y2vurt%F0%... #DiffitAmbassador #StatsChat #MTBoS #iTeachMath #EduSky

And for the teachers in the room, no, your “teacher voice” does not substitute a microphone.

I do really wish we could do a better job uplifting good stories around our work—which is why I am so excited that @edutopia.org is leaning into this with their new Teacher2Teacher page, too. If you've got a story to share, this is the place: www.edutopia.org/teacher2teac...

Master the Force? First, master the data! ⚔️📈 Monday is #StarWarsDay. To celebrate, I'm using @DiffitApp to build a 16-card #StatsChat review. There are Ewoks, Wookiees, and asteroid fields. Check it out: tinyurl.com/edn84779 #DiffitSpringRemix #DiffitAmbassador #iTeachMath #EduSky

For #NationalHonestyDay, I’m sharing my honest teacher shortcut. Whenever a student misses a group assignment, I use @DiffitApp to turn the collaborative task into a parallel individual assignment. Same rigor, less extra planning. 📈✨#DiffitSpringRemix #DiffitAmbassador #EduSky

Wrapping up our book study on Nix the Tricks📚 The conclusion? Progress isn't about perfection; it's about intentional, small changes in our language and questioning. Read more about our final reflections here: tinyurl.com/3yah2nw2 #iTeachMath #MTBoS #NixTheTricks #EduSky

Tomorrow is #InternationalDanceDay! 💃🕺 To celebrate I used @diffitapp.bsky.social to create a 4-Corners Activity. We’re classifying variables like birth year and performance durations. 🩰📊 #DiffitSpringRemix #DiffitAmbassador Check it out: tinyurl.com/4vfzkbuj #StatsChat #iTeachMath #MTBoS #EduSky

Tomorrow is #NationalSuperheroDay. To celebrate, I used @diffitapp.bsky.social to create collateral damage themed expected value stations. Check it out: tinyurl.com/ypncrzuy #DiffitSpringRemix #DiffitAmbassador #FinLit #MTBoS #iTeachMath #EduSky

Spent some time today showing teachers how to use @diffitapp.bsky.social to build accessible, high-rigor resources for students. The feedback was unanimous: this is a game-changer for differentiation! 📝💪 ​#DiffitAmbassador #DiffitSpringRemix

Need to create a quick set of task cards? @diffitapp.bsky.social can help. Check out how to go from learning target to printable in minutes #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS #EduSky

Ready to stop being the “sage on the stage” and start being the “guide on the side”? 💡AI is the perfect partner for this transition. Here’s how to use it to boost critical thinking and streamline your teaching workflow. Get the details: jenabel.blogspot.com/2026/04/from... #EdTech #EduSky

I'm reviewing categorical data and two-way tables in #StatsChat, so I used @diffitapp.bsky.social to create a station rotation problem set. Feel free to borrow and modify :) Check it out here: tinyurl.com/23jhkmck #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS #EduSky

This review covers Individuals and Variables by analyzing social media metrics. I used @diffitapp.bsky.social to build this resource in minutes. I’m not working late tonight. 🌙✨Check it out: tinyurl.com/mr9mn37h #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS #EduSky

Tomorrow is #EarthDay 🌎♻️! To celebrate, I use @diffitapp.bsky.social to create a hypothesis testing lab investigating the Carbon Offset Gap. Check it out: tinyurl.com/7hk8rjct #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS #EduSky

For #NationalParkWeek, I used @diffitapp.bsky.social to create this Old Faithful-themed linear regression lab. Check it out: tinyurl.com/mr2wcysd #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS

Today is #NationalHaikuDay 🌸📝✨. I'm celebrating by using @diffitapp.bsky.social to create a Haiku Scaffold that helps students distill complex topics into elegant poetry. Check it out: tinyurl.com/2s4xeuzx #DiffitSpringRemix #DiffitAmbassador #StatsChat #iTeachMath #MTBoS #EduSky

It's #EarthMonth! 🌍♻️🌱To celebrate I used @diffitapp.bsky.social to create an activity where students calculated the break-even time to own an EV vs a gas sedan #DiffitSpringRemix #DiffitAmbassador #FinLit Check it out: tinyurl.com/2ewdvht4 #iTeachMath #MTBoS #EduSky

For #NationalPoetryMonth, I used @diffitapp.bsky.social to build a Poetry Menu where #StatsChat students demonstrate mastery through constrained writing. Check it out: tinyurl.com/29usjruu #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS

Today is #NationalGardeningDay 🌼🌱. To celebrate I used @diffitapp.bsky.social to create an activity for students to investigate the ROI of a home garden. Check it out: tinyurl.com/y26ztxts #DiffitSpringRemix #DiffitAmbassador #FinLit #iTeachMath #MTBoS

Saturday was National Pet Day 🐶🐱. To celebrate I used @diffitapp.bsky.social to create a Pet Insurance Policy station rotation activity. Check it out: tinyurl.com/wm7d6tp9 #DiffitSpringRemix #DiffitAmbassador #FinLit #NationalPetDay #iTeachMath #MTBoS

🏷️⚖️ Yesterday was #NationalNameYourselfDay. To celebrate, I used @diffitapp.bsky.social to create a task for my students to audit the costs associated with changing their name in PA. Check it out: tinyurl.com/f6cznx2f #DiffitSpringRemix #DiffitAmbassador #iTeachMath #MTBoS #EduSky

Is your energy drink habit costing you a $185,000 retirement fund? 🌿🥤 Tuesday was World Health Day and my students audited the Wealth and Wellness Connection using an activity I created using @diffitapp.bsky.social . #DiffitSpringRemix #DiffitAmbassador Check it out: tinyurl.com/ybbmrbd6 #EduSky

✂️🧵 Saturday was #NationalHandmadeDay. To celebrate, I used @diffitapp.bsky.social to create a guided experience where students hand-make their own Empirical Rule reference tools. Check it out: tinyurl.com/3h86j93d #DiffitSpringRemix #DiffitAmbassador #StatsChat #MTBoS #iTeachMath #EduSky

Saturday was National School Librarian Day! 📚 The math shows that our librarians are the ultimate investment experts. I used @DiffitApp to build this Library ROI activity tinyurl.com/3ry3werf #DiffitSpringRemix #DiffitAmbassador #FinLit #NationalSchoolLibrarianDay #iTeachMath #MTBoS #EduSky

Thursday was International Children’s Book Day! 📖🌟 I celebrated by using @diffitapp.bsky.social to create an activity combining literature and #StatsChat! Compare mean word lengths of two books. Check it out: tinyurl.com/3nxpjnnk #DiffitSpringRemix #DiffitAmbassador #MTBoS #iTeachMath #EduSky

Celebrate National Play Outside Day tomorrow by getting your students outside to do real Statistics! 🌤️🏃‍♀️🌿Check out this Pool Noodle Toss Lab that I created with @diffitapp.bsky.social tinyurl.com/2frtvcrb #DiffitSpringRemix #DiffitAmbassador #StatsChat #MTBoS #iTeachMath #EduSky

Behind many 'Aha!' moments is an incredible paraprofessional. 💛 Tomorrow is #ParaProAppreciationDay and I’m shouting out my teammate’s superpower: making math feel doable. We use @DiffitApp to build scaffolded tasks, ensuring every student has an entry point. #DiffitAmbassador

What a great way to save time in creating Hexagonal Thinking activities from your vocab lists with @diffitapp.bsky.social #DiffitSpringRemix #DiffitAmbassador #EdTech #EduSky