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It Is a Mistake to Ban Devices in Schools (Richard Culatta)

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Richard Culatta, CEO of ISTE+ASCD, one of the largest education organizations in the country, and former director of educational technology at the U.S. Department of Education. He believes that banning devices as Natasha Singer described in previous post, is mistaken.

His article appeared April 20, 2026 in 74.

When it comes to tech and kids, America has made serious mistakes. For years, children have been allowed unsupervised access to social media apps in school and at home that were not designed with their safety in mind. This has contributed to an unprecedented rise in adolescent anxiety, depression, cyberbullying and suicide. Americans have every reason to be concerned — and every reason to act.  

Responsible legislation could limit the dangers by requiring age verification before kids can sign up for social media accounts, making learning content easier to access and demanding that cellphone providers provide safety tools for families. Instead, a huge wave of poorly constructed bills is working its way through state legislatures that could cause unintended consequences and set young people back even further. 

For example, in Missouri, a bill recently passed the statehouse that will require 70% of elementary school assignments to be completed with pencil and paper and prohibit schools from assigning any homework that uses technology. In Tennessee, legislators passed a bill to ban all technology in grades K-5 for students and teachers. A proposed Kansas measure would mandate that all K-5 instructional materials be “print-based.” Virginia’s Senate has passed legislation directing the state to cap instructional screen time by grade level. And in Utah, a package of bills signed by the governor will sharply curtail the use of technology to support learning.

There are two consistent problems in the current wave of bills. First, they treat distracting entertainment media and research-based educational technology as if they are the same. But not all screen time is created equal, and these bills completely ignore that distinction. Lumping TikTok together with a math tutoring app, or Instagram with a text-to-speech tool for a student with dyslexia, is a practice that has been repeatedly called out by educators

Second, they assume that the best way to limit tech use is with a timer. But the issue is quality, not quantity. Many of these bills set a daily time limit (e.g., one hour of digital instruction), though any amount of time would be too much for a student who is not using the technology effectively. On the flip side, technology used thoughtfully to increase student engagement and creativity should not be constrained by an arbitrary time limit, especially when supporting evidence-based pedagogical practices. What’s worse, not one of the bills requiring paper-based worksheets to be used in place of technology imposes any quality standards on the types of activities assigned. According to these bills, a teacher could replace a highly effective math app with a dot-to-dot worksheet, and it would be totally fine. That’s an “out of the frying pan into the fire” situation.

As a parent and former educator, I understand the desire for distraction-free schools. Personal devices and non-learning apps that don’t support educational goals can hijack students’ attention and try any teacher’s patience. But when learning is not engaging, literally anything will become a distraction. Limiting instruction to filling out paper-based worksheets would be mind-numbing for any student.

In contrast, the key to get kids to love learning is to make it meaningful, and this is where ed tech can be a game-changer. Recently, I visited a school in Los Angeles that was transforming math instruction by having students play a research-based math game, which informed the teacher exactly who needed extra help with specific concepts. Other technologies adapt learning activities based on students’ interests or skill levels, let teachers know which kids need help before they fall behind and enable educators to meet each student’s needs in ways that would otherwise be impossible. The effectiveness of these tools is backed by decades of research. A bill like Missouri’s would make this kind of data-informed teaching nearly impossible.

For children with disabilities, assistive technology — screen readers, text-to-speech software, adaptive learning systems and language translation tools — is not just a nice-to-have; it supports millions of students whose needs might otherwise go unmet. Today, nearly 8 million children in the U.S. receive special education services, many of which include technology as part of their individualized education plans. For students with dyslexia using a text-to-speech app, for example, technology isn’t a distraction — it’s how they access learning. Tennessee’s original proposal would have barred teachers from even using digital devices for instruction, meaning the very tools these students depend on could have been eliminated.

In today’s economy, there is no college or career path that doesn’t require the effective use of technology. Students who develop digital literacy skills early find greater academic and professional success than those who don’t. Essentially all jobs — 92% — now require applicants to have digital proficiency. Preventing K-12 students from learning to use technology for writing, research and collaboration would undermine their future employability and the nation’s economic competitiveness.

This is even more striking in a global context. While America’s state legislatures debate whether to let elementary students touch a keyboard, other countries are doubling down on teaching students how to use technology — including artificial intelligence —to solve complex problems. They recognize that technology can enhance curiosity, critical thinking and other essential skills, ensuring their graduates can thrive in the workplace and beyond. 

With the emergence of artificial intelligence, the world is at the dawn of a new era for learning and life. If the nation’s goal is to prepare kids to thrive in a complex and modern economy, it cannot retreat to the tools of the last century.

There is no disputing the need for guidelines and guardrails for children using consumer technology. But by treating math software the same as Netflix, and assistive technology the same as TikTok, the ed tech bans gaining momentum in statehouses around the country guarantee that the students who can least afford to fall behind will be the ones hurt most. If these bills become law, America won’t have protected its children — it will have forced them to learn for a paper-based world that no longer exists.

Banning technology for learning doesn’t make us principled — it makes us negligent.



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We still don't have a more precise value for "Big G"

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The gravitational constant, affectionally known as "Big G," is one of the most fundamental constants of our universe. Its value describes the strength of the gravitational force acting on two masses separated by a given distance—or if you want to be relativistic about it, the amount a given mass curves space-time. Physicists have a solid ballpark figure for the value of Big G, but they've been trying to measure it ever more precisely for more than two centuries, each effort yielding slightly different values. And we do mean slight: The values vary by roughly one part in 10,000.

Still, other fundamental constants are known much more precisely. So Big G is the black sheep of the family and a point of frustration for physicists keen on precision metrology. The problem is that gravity is so weak, by far the weakest of the four fundamental forces, so there is significant background noise from the gravitational field of the Earth (aka "little g"). That weakness is even more pronounced in a laboratory.

In the latest effort to resolve the issue, scientists at the National Institute of Standards and Technology (NIST) spent the last decade replicating one of the most divergent recent experimental results. The group just announced their results in a paper published in the journal Metrologia. It does not resolve the discrepancy, but it gives physicists one more data point in their ongoing quest to nail down a more precise value for Big G.

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AI Editing Is Botox

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What do we lose when we smooth out the natural wrinkles in our faces and our writing?

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Inquiries-Week 8: Fence Maxing

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Introduction

Inquiries-Week 8: Fence Maxing

Pentominoes are shapes made from 5 squares joined edge-to-edge. There are 12 of them:

Inquiries-Week 8: Fence Maxing

Next, let's define what an enclosed area is with these shapes. The pentominoes must create a fence where they touch edge-to-edge with no overlaps. Note that corners touching is not closed because it is not edge to edge:

Inquiries-Week 8: Fence Maxing

Activity

Build a fence with all 12 pentominoes, edge-to-edge, no overlaps. If you have manipulatives, Polypad or toys that can make them you can use those, or use the tool below (full page version).

Now that you've made an area here are some challenges:

  • Maximize the amount of area
  • Maximize the number of separate areas you can get
  • Make the area inside a rectangle
  • Make the shape on the outside a rectangle
  • Make the shape on the inside and outside a rectangle

A quick note: These challenges have a rich history. Pentomino fences have been explored in Martin Gardner's 1960s columns, and by Solomon Golomb, Sivy Farhi, Michael Keller, Rodolfo Kurchan, and many others. Any variation I add has almost certainly been thought about before.

Educator Resources

Spoiler alert — go play before proceeding (this means you too).

Activity Structure

This is a 30–60 minute activity. If you haven't derived the pentominoes prior to this you might want to ask how many shapes are possible first to find the 12 shapes. Here is a toy to explore.

Make an initial garden (5-10 minutes)

This can be done with manipulatives, Polypad, or with the tool earlier in the post. The advantage of using something manual is getting to think about how the area is measured first.

Using the number bars in Polypad is its own activity. Using this for the first area or on paper has its benefits to count.


In Polypad, using arrow keys nudges pieces to align with the grid.
Inquiries-Week 8: Fence Maxing

Iterate on the gardens - maxing (10-15 minutes)

Take the first garden and then tweak it with different ideas to see if more area can be created. This is where having a tool to count for you might help with having immediate feedback on small changes.
Small changes to try:

  • Flip one piece
  • Swap a few pieces
  • Swap some corners

More to play with (5 min - the rest of your life)

What other ways could you optimize this fence? What other challenges are there?

  • Max the number of enclosed regions
  • Make the area inside a rectangle
  • Make the shape on the outside a rectangle
  • Make the shape on the inside and outside a rectangle
  • Maximum number of enclosed 1x1 regions
  • Maximum of two regions that are completely separate
  • Make a game of it
Inquiries-Week 8: Fence Maxing

Discussion Questions

  • If all 60 squares came unglued, what's the largest garden you could build?
  • Which pentomino is the best fencer? Which is the worst?
  • When two pentominoes touch along an edge, how much fence is lost?
  • Does a rounder garden beat a longer one?
  • Did you plan the shape first, or place pieces and see what happened?
    • What strategy would you share with a friend for building a fence?
  • What's the best garden you can grow without the X?
  • Can you grow two separate gardens of the same size? Three? Four?
  • What are interesting questions you can pose?

Resources, Extensions, and What Ifs

  • CIMT - Enclosure Problem
  • Hexomino problems
  • Katamino board game
  • 3d print pentominoes, make them from Artec or other toys, print them
  • There are thousands of extensions with pentominoes
  • Knotted Doughnuts and Other Mathematical Entertainments by Martin Gardner


Vocabulary

  • Pentomino — A shape made from 5 unit squares joined edge-to-edge. There are 12 of them.
  • Polyomino — The general family: 1 square (monomino), 2 (domino), 3 (tromino), 4 (tetromino), 5 (pentomino), and so on.
  • Unit square — A single square of side 1.
  • Edge-to-edge — Two pieces touching along a full shared edge, not just at a corner.
  • Fence — All 12 pentominoes arranged together to surround a region.
  • Garden / interior — The empty squares fully enclosed by the fence.
  • Enclosed — Trapped inside the fence with no path of empty squares leading to the outside.
  • Leak — A gap where empty squares from the interior connect to the outside.
  • Area — The number of unit squares in a region.
  • Perimeter — The total length of the boundary of a shape.
  • Isoperimetric — About the relationship between perimeter and area. For a fixed perimeter, rounder shapes enclose more area.
  • Connected — All pieces touch (directly or through other pieces) so the fence is one whole.
  • Conjecture — A mathematical statement believed to be true but not yet proven.
  • Upper bound — A provable ceiling on how big something can be.
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Reinventing the Wheel, Again

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Was this forwarded to you by a friend? Sign up for the On Student Success newsletter and get your own copy of the news that matters sent to your inbox every week.


EdTech has a recurring habit of announcing the next transformative breakthrough with enormous fanfare and little introspection. A new technology. A new model. A new price point that promises to reshape higher education, reduce costs, and finally achieve scale.

Often, these innovations are not entirely new. They are familiar ideas repackaged with updated language and some contemporary technology. But they tend to rest on a persistent set of misunderstandings — about how students actually engage, how learning unfolds, and how difficult scale really is.

The recent sequence of events involving Sal Khan offers a particularly instructive example. First came the quiet recalibration around Khanmigo, the AI tutoring tool that was initially framed as transformative but appears to have seen limited sustained use. Almost immediately afterward came the announcement of a new joint venture with ETS and TED to launch a low-cost online degree. The new venture was touted as.

[snip] a new higher education collaboration designed for an AI‑driven era. [snip][which] aims to prepare learners for the next generation of jobs while cultivating the uniquely human skills required to thrive in work, life, and society amid rapid technological change.

Individually, neither development is remarkable. But together, they illustrate something more revealing: the rapid pivot from one ambitious claim to another, without fully reckoning with the structural constraints that limited the first.

The 5% problem

The first signal of this latest cycle was the Chalkbeat article revisiting the performance of Khanmigo, Khan Academy’s AI tutoring tool. In it, Sal Khan appeared to temper some of his earlier claims about how transformative AI tutoring would be. The article noted that student uptake had been limited and that sustained usage was concentrated among a relatively small subset of students.

The piece quickly spawned a familiar secondary wave of commentary. But the most interesting detail in the article was a familiar one. Only a small fraction of students regularly used Khanmigo; roughly 5 percent in some implementations.

Khan and other company representatives expressed frustration at students’ lack of engagement. The students weren’t using it “correctly.” They weren’t self-initiating.

This is where the pattern reasserts itself.

When only 5 percent of students engage with a voluntary educational tool, that is not primarily a student problem. It is a design and integration problem. The hardest challenge in EdTech is not building a capable tool. It is embedding that tool into systems that support motivation, accountability, and sustained use — especially for students who are juggling many demands and uneven academic preparation.

Teaching the already motivated 5 percent is not transformation. It is amplification. Which makes the rapid pivot — from limited engagement with an AI tutor to the announcement of a fully AI-mediated, $10,000 degree — especially striking.

From tutor to degree

Within a week of tempering expectations about Khanmigo, Sal Khan pivoted to something new, this time in higher education. He announced a collaboration with testing giant ETS and TED (of TED Talks fame) to create an accredited university offering low-cost degrees.

ETS, Khan Academy and TED will announce a joint plan to launch the Khan TED Institute, a new higher education collaboration designed for an AI‑driven era. The Khan TED Institute aims to prepare learners for the next generation of jobs while cultivating the uniquely human skills required to thrive in work, life, and society amid rapid technological change.

The rhetoric is expansive. The ambition is unmistakable.

Another founder, Amit Sevak, who leads ETS, acknowledged that they are still working out many of the details, but that the new institution could someday enroll “tens of thousands” of students, rivaling flagship state universities. Sevak said he’s “100%” anticipating that its instructors will be humans, most likely a large network of adjuncts.

The details are still emerging. But the scale aspirations are clear: tens of thousands of students, rivaling flagship state universities.

The curriculum is still under development, but Khan said it will be guided by corporate partners that include Google, Microsoft, Accenture, Bain, McKinsey, and Replit. [snip]

None of the employers have committed to hiring graduates of the new program [snip]

Blue-chip corporate names lend credibility, and many of these same companies are already involved in creating and offering certificates and content on other platforms as well as their own.

None of this is unreasonable. But none of it is new. And none of it resolves the core challenges that have faced other “revolutionary” online low-cost degrees: sustained engagement, student persistence, and the economics of large-scale asynchronous delivery.

If voluntary AI tutoring struggled to engage more than a small fraction of students, what exactly changes when the same logic is applied to a fully asynchronous degree? To understand why this matters, it helps to remember what happened the last time we declared scale solved.

Reinventing what already exists

The Khan TED Institute is presented as a reimagining of higher education for the AI age. Strip away the rhetoric, however, and the underlying structure is familiar: asynchronous lessons, simulations, peer dialogue, remote faculty guidance.

Fully online higher education is not an untested frontier. Nearly 30 percent of U.S. higher education enrollments now include online coursework. Entire institutions operate at scale in fully asynchronous formats.

And yet the proposed design is framed as if it marks a departure:

Instead of professors lecturing from the front of an auditorium, the faculty will create virtual lessons and assignments that students can complete independently. The exact format and pacing of courses is undecided, but Khan said students will practice skills in group projects, asynchronous simulations and live “dialogue sessions” where they will receive peer feedback and support virtually.

There is nothing radical here. Virtual lessons, asynchronous assignments, group projects, simulations, peer dialogue sessions— essentially discussion boards or tutorials —have been core elements of online pedagogy for two decades. They are not breakthroughs. They are baseline design choices.

This pattern is familiar. A decade and a half ago, MOOCs promised to democratize higher education with nearly identical rhetoric: lower cost, global reach, scalable delivery, brand-name partners.

The MOOC model evolved into online degrees, many priced below traditional programs and delivered through platforms like Coursera — the most serious and well-resourced attempt to operationalize this approach at scale. Coursera combines brand-name university partners, a massive global learner base, and what Phil Hill has called an enrollment “flywheel.” And yet, even with those advantages, the degree business has proven harder than early projections suggested, as recent earnings reports make clear.

Chart showing flattening growth in Courseras degrees offerings 2019-2024

Recent data show that degree enrollments have plateaued and revenue per degree has declined. Coursera has increasingly shifted emphasis toward shorter credentials and enterprise offerings rather than continued degree expansion. This is the best-resourced version of the model. If scale were easy, it would be visible here.

The lesson is not that online degrees cannot succeed. It is that scale requires sustained marketing investment, institutional credibility, student support infrastructure, and retention strategies that go well beyond content delivery.

The proposed Khan TED Institute would enter a more crowded and mature market than Coursera did in 2017. It would do so without an existing institutional brand, and with an undergraduate target population that is typically more brand-sensitive and retention-challenged than graduate learners. A $10,000 price point is rhetorically powerful. But price alone does not solve acquisition costs, persistence challenges, or the economics of sustained student support.

What makes this different from earlier Khan Academy expansions is that the degree market is not a philanthropic distribution problem. It is a competitive acquisition problem. In the past, Khan Academy and Khanmigo benefited from large institutional adoptions, foundation support, and government partnerships. They did not have to fight for individual tuition-paying undergraduates in a saturated, brand-sensitive market with high marketing costs and low retention margins.

Competing in the undergraduate degree market requires sustained marketing investment, enrollment operations, student support infrastructure, and regulatory compliance — not simply compelling rhetoric and strong corporate brand associations.

Scale is not frictionless

The proposed curriculum for the new Khan TED Institute is fairly predictable and not unreasonable, if a bit STEM and jargon heavy.

*Core knowledge in mathematics, statistics, economics, computer science, science, history, and writing.

*Applied AI skills, including AI‑assisted app development, financial modeling, building AI agents, and team‑based deployment projects.

*Communication and leadership, developed through structured collaboration, peer tutoring, dialogue sessions, and public speaking"

On paper, this looks coherent. It blends some liberal arts with technical fluency, and applied collaboration. But what is striking is how frictionless the model sounds.

Content can be delivered asynchronously. Skills can be practiced in simulations. Dialogue sessions can be scheduled. But learning — especially for under-prepared or time-constrained students — is not a smooth pipeline from exposure to mastery. Learning requires feedback loops, accountability, structured practice, and often sustained human intervention. AI can assist with parts of this. It does not replace the systems and practices that make engagement durable.

If a voluntary tutoring tool struggled to move beyond a small, self-motivated minority, it is reasonable to ask what mechanisms will ensure persistence in a largely asynchronous degree, especially when the underlying logic still seems to be that access to a tool or content is enough and that students themselves bear responsibility for engagement.

This fact comes out in the recent Chalkbeat article from Sal Khan.

Khan gives this analogy: Imagine he walked into a class, sat in the back of the room, and waited for students to seek out help. “Some will; most won’t,” he said. That’s been the experience with AI tutoring, he said. It doesn’t necessarily make students motivated to learn or fill in gaps in knowledge needed to ask questions.

And from Kristen DiCerbo the Chief Learning Officer.

Kristen DiCerbo, the organization’s chief learning officer, said AI can only respond to students based on what they ask. And it turns out, she said, “Students aren’t great at asking questions well.”

And yet the need for deliberate and designed engagement is even more important in an online degree than in a tutoring app. The students most drawn to low-cost, asynchronous degrees are often balancing work, care-giving, and uneven academic preparation. Designing for their success requires more than access to content and AI tools. It requires structured support systems, good pedagogy and instructional design, integration into institutional processes, and sustained human accountability. And nothing in the current framing suggests that these structural engagement challenges are being treated as primary design requirements rather than downstream engineering problems.

The interval is shrinking

The debate over Khanmigo also prompted a sharp observation from one of the most perceptive critics of technology-mediated learning at scale. Before the announcement of the Khan TED Institute, Justin Reich proposed what he called the “time-to-TED-talk-renunciation” metric — the interval between a bold claim about technological transformation and the subsequent retreat to a more modest position.

In 2011, Khan argued "Let's Use Video to Reinvent Education." In 2019, he gave an interview with District Administration magazine where he suggested that actually we shouldn't reinvent learning, but students in math class should do online practice problems one day a week [snip] In 2023, Khan argued that "AI Could Save Education," and in 2026 Matt Barnum in Chalkbeat basically got him to quote the thesis of Failure to Disrupt: "“AI is going to help, but I think our biggest lever is really investing in the human systems.” [snip]

It begs the question, given that the time-to-TED-talk-renunciation is shrinking, at what point should we predict that Sal Khan gives a TED talk where he SIMULTANEOUSLY advances and then renunciates some techno-utopian idea

Reich’s framing is humorous. But it captures something real. Each new technological promise arrives with expansive rhetoric. Then implementation collides with student behavior, institutional inertia, and economic reality. The recalibration follows.

Reich even sketched a trend line.

Chart showing humorous model of the gap between something being announced in a TED talk and an interview renunciating it

The interval appears to be shrinking.

And then, within days of Reich posting that chart, Sal Khan announced the Khan TED Institute — from the stage of a TED talk.

The humor works because the pattern is familiar. But the stakes are not trivial. Each cycle absorbs institutional attention, philanthropic dollars, public imagination — and some students who will enroll in the new experiment and struggle.

The deeper issue is not ambition. It is repetition. We keep repackaging familiar models without grappling with the structural constraints that limited them in the first place. In this case, that constraint is engagement — how to design for sustained participation among students who are balancing work, caregiving, uneven preparation, and financial risk.

The interval between declaration and re-calibration may be shrinking. The underlying mistakes remain unchanged — and they will produce the same outcomes unless the design logic changes.


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Introducing Vanishing Culture: A New Book on the Loss of Our Digital Memory

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From disappearing news articles to lost films, music, and websites, a new book from the Internet Archive reveals how our shared digital record is eroding, and what it will take to preserve it.

What does it mean to live in an era where culture can simply… disappear?

Vanishing Culture: A Report on Our Fragile Cultural Record—a new book from the Internet Archive—brings together essays, research, and case studies that document a growing crisis: the erosion of access to the knowledge, media, and history that shape our collective memory. From journalism and government information to music, film, and the web itself, the shift from ownership to access—and from physical to digital—has made culture more vulnerable than many realize.

This isn’t just about nostalgia. It’s about accountability, scholarship, and the public’s right to access information. When news articles are altered or removed, when public information is taken offline, or when creative works are locked behind shifting licenses, the historical record becomes incomplete. What disappears is not just content, but context.

DOWNLOAD & READ Vanishing Culture for free at the Internet Archive. PURCHASE A PRINT COPY from Better World Books, or your local bookstore.

Recent efforts by some publishers to block web archiving services like the Wayback Machine underscore how fragile access to digital history has become. When large portions of the web are intentionally excluded from preservation, gaps in our shared record are structural, not accidental.

At the same time, libraries, archivists, and preservationists are working to push back against this loss. The Internet Archive and its partners continue to build a digital library for the web: capturing, preserving, and providing access to materials that might otherwise vanish.

Vanishing Culture is both a warning and a call to action. It invites readers to reconsider what it means to preserve culture in a digital age, and to recognize that without intentional effort, much of what we create today may not be available tomorrow.

Read the book, explore the essays, and join us in the work of preserving our digital past before more of it disappears.

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