Ralph Pantozzi
@mathillustrated.bsky.social
(a personal account) MoMath Rosenthal Prize • #PAEMST • SciFri Educator • RutgersGSE • NCTM MAA Committee on the Teaching of Undergraduate Mathematics
One argument I used to make to my students about why it was important to learn history (and historical thinking) is that someone was always going to be trying to tell you things were natural or had always been this way and that you needed to be able to see that as an exercise of power.
December 14, 2025 at 8:55 PM
Filing under misleading graphs #iTeachMath
December 12, 2025 at 9:04 PM
Filing under misleading graphs #iTeachMath
Reposted by Ralph Pantozzi
Another way to interpret this: The Washington Post endorses re-segregation of American society.
Washington Post editorial board really speaking truth to power
December 11, 2025 at 1:58 PM
Another way to interpret this: The Washington Post endorses re-segregation of American society.
"The current study contributes to extant literature by examining the efficacy of inquiry-based instruction separated by inquiry types, rather than grouping all forms of inquiry-based interventions together... for students with disabilities
December 10, 2025 at 10:06 PM
"The current study contributes to extant literature by examining the efficacy of inquiry-based instruction separated by inquiry types, rather than grouping all forms of inquiry-based interventions together... for students with disabilities
The American Way
ICE detain U.S. citizen for looking Somali—use illegal chokehold to tackle him to ground.
Man repeatedly begs agents to look at his digital passport ID—they refuse.
Drove him 7 miles away before releasing him alone into Minnesota snow storm—told him to "walk home" in freezing weather advisory.
Man repeatedly begs agents to look at his digital passport ID—they refuse.
Drove him 7 miles away before releasing him alone into Minnesota snow storm—told him to "walk home" in freezing weather advisory.
December 10, 2025 at 8:17 PM
The American Way
Reposted by Ralph Pantozzi
I maintain that a major difference between the humanities and math/sciences is we treat the latter as an innate skillset and we treat the humanities as learnable.
Also the people IME have the most contempt for the humanities are the ones who struggle to write a simple paragraph.
Also the people IME have the most contempt for the humanities are the ones who struggle to write a simple paragraph.
December 10, 2025 at 12:24 AM
I maintain that a major difference between the humanities and math/sciences is we treat the latter as an innate skillset and we treat the humanities as learnable.
Also the people IME have the most contempt for the humanities are the ones who struggle to write a simple paragraph.
Also the people IME have the most contempt for the humanities are the ones who struggle to write a simple paragraph.
I need to get to work on my book about the history of teaching calculations.
Not that this would prevent such theories, however. #iTeachMath
Not that this would prevent such theories, however. #iTeachMath
December 10, 2025 at 12:48 AM
I need to get to work on my book about the history of teaching calculations.
Not that this would prevent such theories, however. #iTeachMath
Not that this would prevent such theories, however. #iTeachMath
…algorithms can lead to higher costs for consumers because if companies know that their competitors will almost instantaneously match their prices, they have less incentive to try to attract customers by offering a better deal — a pattern the authors call “algorithmic coercion.”
The only difference was the price they were offered: $3.99 for a couple of lucky shoppers. $4.59 or $4.69 for others. And a few saw a price of $4.79 — 20 percent more than some others, for the exact same product.
#iTeachMath
www.nytimes.com/2025/12/09/b...
#iTeachMath
www.nytimes.com/2025/12/09/b...
Same Product, Same Store, but on Instacart, Prices Might Differ
www.nytimes.com
December 9, 2025 at 6:27 PM
…algorithms can lead to higher costs for consumers because if companies know that their competitors will almost instantaneously match their prices, they have less incentive to try to attract customers by offering a better deal — a pattern the authors call “algorithmic coercion.”
The only difference was the price they were offered: $3.99 for a couple of lucky shoppers. $4.59 or $4.69 for others. And a few saw a price of $4.79 — 20 percent more than some others, for the exact same product.
#iTeachMath
www.nytimes.com/2025/12/09/b...
#iTeachMath
www.nytimes.com/2025/12/09/b...
Same Product, Same Store, but on Instacart, Prices Might Differ
www.nytimes.com
December 9, 2025 at 3:46 PM
The only difference was the price they were offered: $3.99 for a couple of lucky shoppers. $4.59 or $4.69 for others. And a few saw a price of $4.79 — 20 percent more than some others, for the exact same product.
#iTeachMath
www.nytimes.com/2025/12/09/b...
#iTeachMath
www.nytimes.com/2025/12/09/b...
Reposted by Ralph Pantozzi
I love all of the content areas & never wanted to give up any of them. Last year, using a mostly-scripted curriculum for language arts was one of the most frustrating & demoralizing professional experiences of my career. I worked hard to make that curriculum interesting & relevant to my students. 2/
December 7, 2025 at 4:04 PM
I love all of the content areas & never wanted to give up any of them. Last year, using a mostly-scripted curriculum for language arts was one of the most frustrating & demoralizing professional experiences of my career. I worked hard to make that curriculum interesting & relevant to my students. 2/
Welcome back to 1906
Our investigation showed that levels of benzene, a cancer-causing gas, were 37x higher than what the facility reported in the past.
The Trump admin has halted efforts to monitor for benzene near large industrial plants like this one, leaving communities in the dark about the air they breathe. (2/2)
The Trump admin has halted efforts to monitor for benzene near large industrial plants like this one, leaving communities in the dark about the air they breathe. (2/2)
Air Pollution From Industrial Facilities Is Far Worse Than Estimated
The Trump administration has put a stop to EPA rules that would have required more than 130 industrial facilities to install air monitors to measure pollution. Millions of people living near these…
www.propublica.org
December 8, 2025 at 12:05 AM
Welcome back to 1906
Reposted by Ralph Pantozzi
📽️ WATCH: Photographer @annie-flanagan.bsky.social went to Clairton, PA, where residents live in the shadow of the country’s largest coke plant. Coke is a product used to manufacture steel.
This is what Annie saw — and inhaled — while on assignment in Clairton.
Link to our story below ⤵️
This is what Annie saw — and inhaled — while on assignment in Clairton.
Link to our story below ⤵️
December 8, 2025 at 12:01 AM
📽️ WATCH: Photographer @annie-flanagan.bsky.social went to Clairton, PA, where residents live in the shadow of the country’s largest coke plant. Coke is a product used to manufacture steel.
This is what Annie saw — and inhaled — while on assignment in Clairton.
Link to our story below ⤵️
This is what Annie saw — and inhaled — while on assignment in Clairton.
Link to our story below ⤵️
Reposted by Ralph Pantozzi
again, it is just arrogance. “there is one true meaning of the constitution and it can only be derived by a special caste of lawyers with a special interpretative lens and once discovered it is binding.”
December 7, 2025 at 7:26 PM
again, it is just arrogance. “there is one true meaning of the constitution and it can only be derived by a special caste of lawyers with a special interpretative lens and once discovered it is binding.”
if didn’t say it last year at my first @socialstudies.org conference, making sure I say it here after my second: social studies teachers are heroes.
Plus so much collaboration with #iTeachMath is possible.
Plus so much collaboration with #iTeachMath is possible.
a man in a black vest is pointing at something .
ALT: a man in a black vest is pointing at something .
media.tenor.com
December 7, 2025 at 7:51 PM
if didn’t say it last year at my first @socialstudies.org conference, making sure I say it here after my second: social studies teachers are heroes.
Plus so much collaboration with #iTeachMath is possible.
Plus so much collaboration with #iTeachMath is possible.
Maps! More #iTeachMath
The newsletter includes a number of other comparisons — and several other topics and visualizations. Check it out!
8/8
www.howtoreadthisch.art/putting-the-...
8/8
www.howtoreadthisch.art/putting-the-...
Putting the real world down on paper
This week's newsletter looks at how we use maps. I review a new book on the subject, interview a mapmaker and show how maps can reshape our assumptions about borders. It's all topped off with what I t...
www.howtoreadthisch.art
December 7, 2025 at 11:55 AM
Maps! More #iTeachMath
Reposted by Ralph Pantozzi
I decided to convert dollars to centimeters. That allows us to visualize, for example, the distance between having no money and being at poverty level — about four city blocks.
2/8
2/8
November 15, 2025 at 4:55 PM
I decided to convert dollars to centimeters. That allows us to visualize, for example, the distance between having no money and being at poverty level — about four city blocks.
2/8
2/8
Ah, 1984 and every year:
"If we are to break the cycle of failure that afflicts many minority children, we must tell students the truth about their basic skills mastery - and the earlier, the better."
How has that worked out?
"If we are to break the cycle of failure that afflicts many minority children, we must tell students the truth about their basic skills mastery - and the earlier, the better."
How has that worked out?
December 7, 2025 at 3:55 AM
Ah, 1984 and every year:
"If we are to break the cycle of failure that afflicts many minority children, we must tell students the truth about their basic skills mastery - and the earlier, the better."
How has that worked out?
"If we are to break the cycle of failure that afflicts many minority children, we must tell students the truth about their basic skills mastery - and the earlier, the better."
How has that worked out?
ah, 1984.
"When I address business groups, I hear a consistent protest: Our graduates lack the skills needed to hold even entry-level jobs. The private sector has had to conduct its own employee training programs in order to fill the gap."
"When I address business groups, I hear a consistent protest: Our graduates lack the skills needed to hold even entry-level jobs. The private sector has had to conduct its own employee training programs in order to fill the gap."
December 7, 2025 at 3:52 AM
ah, 1984.
"When I address business groups, I hear a consistent protest: Our graduates lack the skills needed to hold even entry-level jobs. The private sector has had to conduct its own employee training programs in order to fill the gap."
"When I address business groups, I hear a consistent protest: Our graduates lack the skills needed to hold even entry-level jobs. The private sector has had to conduct its own employee training programs in order to fill the gap."
Reposted by Ralph Pantozzi
I recently made a digital teacher resource about CODAP for a class assignment. Maybe you can use it! Download the PDF version with links here: bit.ly/CODAPHandout
December 3, 2025 at 2:07 PM
I recently made a digital teacher resource about CODAP for a class assignment. Maybe you can use it! Download the PDF version with links here: bit.ly/CODAPHandout
Reposted by Ralph Pantozzi
Humans are bad at big numbers. Which makes it easier for billionaires (and trillionaires) to get away with hoarding wealth. Because most people just can't comprehend how much money that is.
So, I appreciate this WaPo effort to help people visualize what ridiculous amounts of wealth really mean.
So, I appreciate this WaPo effort to help people visualize what ridiculous amounts of wealth really mean.
November 19, 2025 at 5:51 PM
Humans are bad at big numbers. Which makes it easier for billionaires (and trillionaires) to get away with hoarding wealth. Because most people just can't comprehend how much money that is.
So, I appreciate this WaPo effort to help people visualize what ridiculous amounts of wealth really mean.
So, I appreciate this WaPo effort to help people visualize what ridiculous amounts of wealth really mean.
Mathematicians, math enthusiasts, and math teachers everywhere should want a piece of this:
#iTeachMath
#iTeachMath
Is There a Better Way to Cut a Cake?
Rings, zigzags, slabs and elaborate geometric designs are giving savvy party hosts new methods for a more equitable slice.
www.nytimes.com
December 7, 2025 at 1:40 AM
Mathematicians, math enthusiasts, and math teachers everywhere should want a piece of this:
#iTeachMath
#iTeachMath
Reposted by Ralph Pantozzi
ICE raided a James Beard award winning restaurant & because the chef/owner was prepared, left emptyhanded:
December 5, 2025 at 3:24 PM
ICE raided a James Beard award winning restaurant & because the chef/owner was prepared, left emptyhanded:
Reposted by Ralph Pantozzi
My fourth graders have learned several of the games from @gfletchy.bsky.social and @tracyzager.bsky.social's Fact Fluency kit for multiplication and division and I love listening in as they play. They love the games and they're skills are growing. The talk as they play is a bonus!
December 1, 2025 at 3:43 PM
My fourth graders have learned several of the games from @gfletchy.bsky.social and @tracyzager.bsky.social's Fact Fluency kit for multiplication and division and I love listening in as they play. They love the games and they're skills are growing. The talk as they play is a bonus!