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Citizen Math

@citizenmath.bsky.social

567 followers 156 following 183 posts

We're folks who think real-world 🌍 issues belong in math class. Here to support + celebrate others who do, too. #RealWorldMath ♥️ Connect at community.citizenmath.com/events or find lessons at www.citizenmath.com

Posts Replies Media

Citizen Math @citizenmath.bsky.social · 30/09/2025

Counted Out, a new documentary about math, democracy, and civic life, opens Oct 3–9 at Cinema Village in NYC 🍿 for a limited run. Don’t miss the opening weekend Q&As on Oct 3 (5pm) and Oct 4 (6pm). Reserve tickets here: www.cinemavillage.com/Now-Playing/... #mathsky #realworldmath

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Citizen Math @citizenmath.bsky.social · 11/03/2025

Here's another #PiDay gem shared over in the CM Community. #MathsToday #EduSky #MathSky

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Citizen Math @citizenmath.bsky.social · 07/03/2025

#BrainTrade 🧠 Pi Day is jut around the corner! What are some ways you like to celebrate? Lessons, activities, even nerdy math shirts are welcome. :-) #MathSky #ITeachMath #EduSky #RealWorldMath #MathsToday

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Citizen Math @citizenmath.bsky.social · 25/02/2025

Did the math. Can confirm. 450 ft homer ⚾️ is....far. 🤩 #RealWorldMath

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Citizen Math @citizenmath.bsky.social · 10/02/2025

We comb through reports and mountains of data to make lessons so you don't have to :-) but here's the 78 page report on coin production from the U.S. Mint. 👇 Bet at least something in this data will surprise you! Hope to see more from others! 🩵 www.usmint.gov/content/dam/...

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Citizen Math @citizenmath.bsky.social · 10/02/2025

Did you know it costs more than 3 cents to produce a penny? The term “seigniorage” refers to the difference between how much a coin is worth and how much it costs the US Mint to produce Who's up for a round of #DebateMath re this #RealWorldMath 🌍 from the US Mint?👇 #MathSky #ITeachMath

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Citizen Math @citizenmath.bsky.social · 03/02/2025

Is there an upside to negative emotions? On a scale of -5 to 5, where everyday gets a general "how good was it" score, what would your ideal week look like? ⭐️ AND - Join us tonight via zoom tonight to talk thru using this lesson in your own class. Link below 👇 All are welcome! #RealWorldMath

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Citizen Math @citizenmath.bsky.social · 24/01/2025

Does it seem like the world keeps changing faster than it used to? It's not your imagination. It's #math. Do you ever wonder what future innovations we can't even yet imagine?! 🤯 What do *you* think is next for communication...is anyone working on digital smells? #RealWorldMath #MathSky

Screenshot from Teacher Guide in Citizen Math lesson "About Time."

Table of innovations in communication by year.

Spoken Language 200,000 BCE
Cave Paintings 30,000 BCE
Hieroglyphics 5,000 BCE
Alphabet 1,700 BCE
Paper 100
Printing Press 1439
Telegraph 1840
Telephone 1876
Television 1909
FM Radio 1933
Email 1971
Mobile Phone 1973
World Wide Web 1989
iPhone 2007
Oculus (VR) 2013

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Citizen Math @citizenmath.bsky.social · 03/12/2024

👀 Tiny Observation Idea: Using your seating chart or class list, draw a line from one speaker to the next during a whole class discussion. What do you notice? Every month or so, we host a #TinyWorkshop 😊 in the CM Community. This month it's about *student-to-student* discourse. #MathSky

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Citizen Math @citizenmath.bsky.social · 15/11/2024

"What's the best way to respond to students 'right' answers?" Next week, dig into this topic with us with just 10 min/day for 3 days *right here*, plus you're invited to a live teacher roundtable on night 2. RSVP for the call here: community.citizenmath.com/events/how-s... #iTeachMath #EduSky

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Citizen Math @citizenmath.bsky.social · 14/11/2024

Pick your poison: If a negative 5 means awful and a positive 5 is amazing, which week would you rather have? #RealWorldMath 🌍 #iTeachMath #MTBOS #EduSky 🍎

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Citizen Math @citizenmath.bsky.social · 31/10/2024

Gut #estimation🧠 : How many years would a teacher in LA have to teach to make as much as LeBron makes in one year? #mathsky #iteachmath #msmath #edusky #edx Want to have this convo with you middle school math class? 🗓️ Join Megan Sunday! community.citizenmath.com/events/why-d...

Two checks side by side: one for a teacher in LAUSD and one for Lebron James. The teacher earns $90,000/year, and Lebron earns $48,000,000/year.

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Citizen Math @citizenmath.bsky.social · 30/10/2024

Should the gov't raise the minimum wage? 💰 Using a system of linear equations to model a labor market would be a great tool in that debate. ⚖️ Join Mrs. Siegel Wednesday @ 8PM to dig into this lesson! 🗓️ RSVP here! All math teachers welcome. 🩵 community.citizenmath.com/events/shoul...

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