New #SlowRevealGraph Comparing Oil Production Per Day with Oil Reserves, by Country, 2024 Venezuela has the world's largest proven oil reserves -- but lags in production. Includes handouts for students to calculate and compare the Reserves-to-Production (R/P) ratio of different OPEC nations.

New #SlowRevealGraph Why Are We Seeing More Auroras? Solar Cycle Sunspots (1980s - present)

New #SlowRevealGraph More Expensive Areas Tend To Have Lower Share of Gen Z Homebuyers From my wonderful colleague Jen Jordan :)

Today, while listening to a kids podcast, we repeatedly heard an ad for a protein yogurt, that promises to “do the math, so you won’t have to.” I’ve heard of green washing, and pink washing… is there a mathwashing term? It is even called ratio!

So reaffirming to read your post. Interviews have changed my teaching dramatically and I've blogged lots. (Marilynburnsmath.com) I loved reading about your perspective and experience.

A Human on a Bicycle is Among the Most Efficient Forms of Travel in the Animal Kingdom (best aligned to upper-secondary courses like AP physics, AP bio, precalculus, stats)

As pointed out by @paulakrieg.bsky.social and noted by @mpershan.bsky.social, longtime #mtbos partner and collaborator Malke Rosenfeld passed away last year. She investigated and taught the mind-body math connection, engaging hundreds of teachers and learners in #mathart - dance! RIP great friend!

New #SlowRevealGraph Countries That Pay Their Olympic Gold Medalists The Most (Paris 2024) Lots of content connections for upper elementary students, including comparing values, using multiplicative comparisons, and using multiplication to determine values.

The implicit assumption that secondary math ed has nothing to learn from elementary math ed genuinely makes me furious.

Strong work here! Also, it would be fun to run these numbers a second time, but using percentages of *disposable* income (i.e. after basic housing, food, transportation, child care, and health care needs are paid for)

New Blog Post: Measuring Growth in Mathematical Reasoning: What Mia’s Thinking Reveals In October, Mia correctly answered 10 out of 12 questions. In December, Mia correctly answered 10 out of 12 questions. Again. And yet, the December interview demonstrated significant growth. How?

Top 10 Largest Free Music Concerts (Worldwide) Top 10 Largest Free Music Concerts (Worldwide)

New #SlowRevealGraph Number of Rat Sightings in Selected Cities (Logarithmic Scale)

#playfulmath carnival 183! mathhombre.blogspot.com/2025/12/play... Writing on teaching, fun math, puzzles, games, art...

New #SlowRevealGraph Annual Carbon Dioxide (CO2) Emissions, Top 10 Most Populous Countries of 2025

New #SlowRevealGraph: World Cities by Climate: Temperature & Rainfall Check out this beautiful scatterplot by Julie Peasley! The questions in the slow reveal target big ideas about noticing trends and comparing data on a scatterplot as well as the difference between climate and weather.

Due to its money & influence, governments around the world are ignoring the role of the UAE in the horrors ongoing in Sudan. Activists have tried to change that in London, including a billboard pointing it out.

Renewing the slowrevealgraphs.com domain, and... why is the cost 19x for up to 9 years, but a more than 50% surcharge if I wanted it to buy 100 years? Pass. Also what will the internet look like in 100 years? This feels like the cryogenics for websites. Maybe that accounts for the increase in cost!

Americans Are Seeking More Help With Adulting: Google Search Volume (2010 - 2025)

Did you miss Session 2? Watch the recording of @mburnsmath.bsky.social's talk about reasoning: www.terc.edu/mathequityfo... Then register for @jennalaib.bsky.social's session which will explore how data gathered from students can inform responsive instruction! lp.constantcontactpages.com/sl/HKaippJ

Percentage of a Country’s Population with a Bachelor’s Degree (or higher) Percentage of a Country's Population with a Bachelor's Degree (or higher)

Launched a Gr 4 geometry lesson with this WODB (from @amplifyeducation.bsky.social). Increasingly, I ask students to focus on the commonalties that 3 of them have -- that thinking supports our work with classifying shapes based on properties. 1/2

I received my copy yesterday. It is BEAUTIFUL!

I hope you'll join me. I'm ready to share.

Our great little math conference, #mathinaction is open for registration. www.gvsu.edu/mathinaction/ Saturday, Feb 28. Lots of teachers sharing ideas and a few cookies.

If a seventh grader asks me “when am I ever going to use this?” During the angles and triangles unit, I will have a new answer: someday, when your kids and their friends ask you to build an octagonal fort, and to have to plan out which holes to use on the connecting ball…”

I'm so glad I got to meet @pambrett.bsky.social in person in Atlanta, and we had a great time getting to know each other better while recording this episode of her podcast. But y'all know I'm always excited to geek out about math ed! www.blueglassesmath.org/podcast/epis...

Gah. This problem ended up having a covert 6-7. 😭

Marilyn Burns leads Sessions 2 of the Speaker Series! Join Marilyn as she shares one-on-one video interviews with students solving arithmetic problems mentally and explains how they reason. Takeaways connect students’ thinking to classroom instruction. Learn more: hubs.la/Q03VRLVZ0

In Gr 4: The classroom T asked students to find examples of parallel and perpendicular lines in the classroom. Students saw some nice, clear examples in the chart paper, the flag, and a calendar. A student asked me about this one: a wicker basket. #elemmathchat 🧵 1/3

Just updated slowrevealgraphs.com with this new version! Thanks to Aristotle Ou & Lee Melvin Peralta. slowrevealgraphs.com/2020/02/27/m...

This one is especially for the teachers who are teaching the week of Thanksgiving. #VehicleChat for Google Slides. A seriously silly conversation, perfect before a holiday. docs.google.com/presentation...

Session 1 of our Speaker Series, by @pamseda1.bsky.social, got Session 3's @jennalaib.bsky.social thinking: "When does it make sense to change [cultural] elements?... The answer isn’t a checklist or a directive. It’s a stance... I strive for intentionality & balance... Why this shift? & for whom?

"When does it make sense to change [cultural] elements? When does it not?" @jennalaib.bsky.social shares 3 examples that explore this question. "It’s interesting to think about how these interact w/ student experiences, as we continue to make complex choices within our professional practice." 1

This is a rational, well written response to some public discourse about the “state of education.”

I try to be intentional when planning classroom participation structures. Ss who come from collectivist cultures (mostly Ss of color) prefer the interdependent activities we do a lot of, and Ss from more individualist cultures (mostly white Ss) say they want more independent activities.

Too often decisions made to privilege different elements of cultures are made with little thought or realization. The examples described here support a more intentional and inclusive approach.

New Blog Post: Culture & Identity in the Math Classroom How do elements of the culture students bring into the classroom interact with the classroom culture we create? What does it mean to shift or honor them?

New #SlowRevealGraph Writers - Peak Age of Production (Number of Books Released, by Age and Gender) Comparing peak production for writers -- but also (on the last slide) other professions

New #SlowRevealGraph Average wingspans of world's 12 largest butterfly species

New #SlowRevealGraph Home refrigerators correlated to drop in stomach cancer deaths -- with opportunities for students to work in groups to calculate percent decrease. Always check the facilitator notes!

New #SlowRevealGraph At the request of some third grade students: number of Superbowl wins for each NFL Team (as of November 2025)

This is wonderful. I see smart kids here, but, beyond that, I see a culture of learning that has shown value in innovative thinking.

omg, this is awesome. Thank you, Jenna! I was never your student, but this is soooo funny. The Wiki article just delighted me to pieces. en.wikipedia.org/wiki/Smoot

S/O to my friend’s dad for Day 17 of #vehiclechat

Okay, so I’m currently in a fourth grade class starting a new unit. The teacher asked them to brainstorm measurement tools. Usually we just get things like “ruler.” This class is going in totally different directions!

It's one week until we kick off our 2025-2026 Speaker Series with @pamseda1.bsky.social! Register now! tinyurl.com/3fnxwbtc

Thank you to @mikeflynn55.bsky.social, @zakchamp.bsky.social, and @howiehua.bsky.social for tonight's Math Playdate! @jennalaib.bsky.social and I got REALLY excited about the math we were seeing.

i assume someone has already coined #mathlighting for gaslighting using mathematics but i refuse to look it up and know for sure!!

I wrote about shallow, vague, fuzzy definitions of "conceptual understanding" and a better way to think about it. pershmail.substack.com/p/understand...