Donald DeLand
@dwdeland.bsky.social
Reimagining education, systems thinking, system dynamics, math/physics nerd; change facilitator
Reposted by Donald DeLand
Energy transitions can happen faster than we think:
In 2000 almost 90% of Denmark's electricity was from fossil fuels.
In 2024 less than 10% of Danish electricity was from fossil fuels.
In 2000 almost 90% of Denmark's electricity was from fossil fuels.
In 2024 less than 10% of Danish electricity was from fossil fuels.
December 1, 2025 at 4:18 PM
Energy transitions can happen faster than we think:
In 2000 almost 90% of Denmark's electricity was from fossil fuels.
In 2024 less than 10% of Danish electricity was from fossil fuels.
In 2000 almost 90% of Denmark's electricity was from fossil fuels.
In 2024 less than 10% of Danish electricity was from fossil fuels.
Reposted by Donald DeLand
The meaning of science education isn't just:
✕ Knowing the content, nor
✕ Knowing how scientists work
The major goal is:
✓ Learning to think about content like a scientist
Through the content, students should understand the nature of models and learn how to infer explanations from them.
#EduSky
✕ Knowing the content, nor
✕ Knowing how scientists work
The major goal is:
✓ Learning to think about content like a scientist
Through the content, students should understand the nature of models and learn how to infer explanations from them.
#EduSky
October 29, 2025 at 9:53 AM
The meaning of science education isn't just:
✕ Knowing the content, nor
✕ Knowing how scientists work
The major goal is:
✓ Learning to think about content like a scientist
Through the content, students should understand the nature of models and learn how to infer explanations from them.
#EduSky
✕ Knowing the content, nor
✕ Knowing how scientists work
The major goal is:
✓ Learning to think about content like a scientist
Through the content, students should understand the nature of models and learn how to infer explanations from them.
#EduSky
Reposted by Donald DeLand
Boundary Logic is a unary, post-symbolic logic, inspired by Charles Sanders Peirce and George Spencer Brown. The new post in the Containment series gives an overview.
www.linkandth.ink/p/boundary-l...
#LoF #logic #math #computing
www.linkandth.ink/p/boundary-l...
#LoF #logic #math #computing
Boundary Logic
If you could design math and computing from scratch, what would it look like?
www.linkandth.ink
October 15, 2025 at 3:19 PM
Boundary Logic is a unary, post-symbolic logic, inspired by Charles Sanders Peirce and George Spencer Brown. The new post in the Containment series gives an overview.
www.linkandth.ink/p/boundary-l...
#LoF #logic #math #computing
www.linkandth.ink/p/boundary-l...
#LoF #logic #math #computing
Reposted by Donald DeLand
Every academic career is built on rejection, but we don’t show it.
CVs list publications, grants & awards, not rejected manuscripts, unfunded proposals, or failures.
But those invisible rejections shape us more than our successes ever do.
👉 catherineeunicedevries.substack.com/p/fail-bette...
🧵
CVs list publications, grants & awards, not rejected manuscripts, unfunded proposals, or failures.
But those invisible rejections shape us more than our successes ever do.
👉 catherineeunicedevries.substack.com/p/fail-bette...
🧵
Fail Better: Why Your Rejections Will Shape You More Than Your Publications
The Art of Learning from Rejection
catherineeunicedevries.substack.com
October 14, 2025 at 8:52 AM
Every academic career is built on rejection, but we don’t show it.
CVs list publications, grants & awards, not rejected manuscripts, unfunded proposals, or failures.
But those invisible rejections shape us more than our successes ever do.
👉 catherineeunicedevries.substack.com/p/fail-bette...
🧵
CVs list publications, grants & awards, not rejected manuscripts, unfunded proposals, or failures.
But those invisible rejections shape us more than our successes ever do.
👉 catherineeunicedevries.substack.com/p/fail-bette...
🧵
Reposted by Donald DeLand
If you completely remove a problem's context and can still solve it, can it really be mathematical modeling?
robertkaplinsky.com/beware-...
robertkaplinsky.com/beware-...
October 12, 2025 at 12:13 AM
If you completely remove a problem's context and can still solve it, can it really be mathematical modeling?
robertkaplinsky.com/beware-...
robertkaplinsky.com/beware-...
Reposted by Donald DeLand
My time with my current employer has come to an end. I am grateful for what I have learned about myself personally & professionally during the last 3 years.
If you know any schools/districts looking for professional development, feel free to drop my name and encourage them to visit strongermath.com
If you know any schools/districts looking for professional development, feel free to drop my name and encourage them to visit strongermath.com
Home, Stronger Math
Replacing math anxiety with math joy.
strongermath.com
October 6, 2025 at 9:10 PM
My time with my current employer has come to an end. I am grateful for what I have learned about myself personally & professionally during the last 3 years.
If you know any schools/districts looking for professional development, feel free to drop my name and encourage them to visit strongermath.com
If you know any schools/districts looking for professional development, feel free to drop my name and encourage them to visit strongermath.com
Reposted by Donald DeLand
Big Doughnutty News.
Just out in Nature: the all-new 2025 Doughnut. Transformed from a single-year snapshot to an annual global monitor of 21st century social & ecological thriving. Available to all in an open-access paper by @andrewlfanning.bsky.social and me. 🧵 1/
www.nature.com/articles/s41...
Just out in Nature: the all-new 2025 Doughnut. Transformed from a single-year snapshot to an annual global monitor of 21st century social & ecological thriving. Available to all in an open-access paper by @andrewlfanning.bsky.social and me. 🧵 1/
www.nature.com/articles/s41...
October 2, 2025 at 6:50 AM
Big Doughnutty News.
Just out in Nature: the all-new 2025 Doughnut. Transformed from a single-year snapshot to an annual global monitor of 21st century social & ecological thriving. Available to all in an open-access paper by @andrewlfanning.bsky.social and me. 🧵 1/
www.nature.com/articles/s41...
Just out in Nature: the all-new 2025 Doughnut. Transformed from a single-year snapshot to an annual global monitor of 21st century social & ecological thriving. Available to all in an open-access paper by @andrewlfanning.bsky.social and me. 🧵 1/
www.nature.com/articles/s41...
Reposted by Donald DeLand
Say it often, say it loud:
"Overall, research has not supported the common-sense presumption that digital approaches to schooling are better than non-digital alternatives. At the broadest level, widespread computer use in education has been found to be associated with lower student achievement."
"Overall, research has not supported the common-sense presumption that digital approaches to schooling are better than non-digital alternatives. At the broadest level, widespread computer use in education has been found to be associated with lower student achievement."
Fit for Purpose? How Today’s Commercial Digital Platforms Subvert Key Goals of Public Education
Digital educational platforms have become ubiquitous in American classrooms, with tools like Google Workspace for Education, Kahoot!, Zearn, Khan Academy, and many others now structuring curriculum, i...
nepc.colorado.edu
September 29, 2025 at 10:18 AM
Say it often, say it loud:
"Overall, research has not supported the common-sense presumption that digital approaches to schooling are better than non-digital alternatives. At the broadest level, widespread computer use in education has been found to be associated with lower student achievement."
"Overall, research has not supported the common-sense presumption that digital approaches to schooling are better than non-digital alternatives. At the broadest level, widespread computer use in education has been found to be associated with lower student achievement."
Reposted by Donald DeLand
#EduSky #UKEd
I'm creating a live sketch note on the global Sketch Your Mind week of seminars. I'm attempting to capture Jono Hey's session (author of Big Ideas, Little Pictures) Sketchplanations. Here's a promotional video: www.youtube.com/watch?v=ncxI...
I'm creating a live sketch note on the global Sketch Your Mind week of seminars. I'm attempting to capture Jono Hey's session (author of Big Ideas, Little Pictures) Sketchplanations. Here's a promotional video: www.youtube.com/watch?v=ncxI...
Global Visual Thinking Conference | Sketch Your Mind 2025
YouTube video by Zsolt's Visual Personal Knowledge Management
www.youtube.com
September 21, 2025 at 3:54 PM
#EduSky #UKEd
I'm creating a live sketch note on the global Sketch Your Mind week of seminars. I'm attempting to capture Jono Hey's session (author of Big Ideas, Little Pictures) Sketchplanations. Here's a promotional video: www.youtube.com/watch?v=ncxI...
I'm creating a live sketch note on the global Sketch Your Mind week of seminars. I'm attempting to capture Jono Hey's session (author of Big Ideas, Little Pictures) Sketchplanations. Here's a promotional video: www.youtube.com/watch?v=ncxI...
Reposted by Donald DeLand
In contrast to my criticisms of other books and publishers earlier this week, as I queue up Saturday's HRP podcast release, I have to highlight that two of the *best* education books I've read so far this year have been self-published. Huge respect to Ryan Sprott & @cmooreanderson.bsky.social!
May 22, 2025 at 3:08 PM
In contrast to my criticisms of other books and publishers earlier this week, as I queue up Saturday's HRP podcast release, I have to highlight that two of the *best* education books I've read so far this year have been self-published. Huge respect to Ryan Sprott & @cmooreanderson.bsky.social!
Reposted by Donald DeLand
In our latest episode, Dr. Kapono Ciotti explores the experiences that led him to co-author The Landscape Model of Learning & how students can become protagonists of their own future.
www.humanrestorationproject.org/podcasts/the...
www.humanrestorationproject.org/podcasts/the...
December 7, 2024 at 1:38 PM
In our latest episode, Dr. Kapono Ciotti explores the experiences that led him to co-author The Landscape Model of Learning & how students can become protagonists of their own future.
www.humanrestorationproject.org/podcasts/the...
www.humanrestorationproject.org/podcasts/the...
Reposted by Donald DeLand
Reposted by Donald DeLand
What I love most is putting flying fractal art into the big blue sky. This is Gloria Caeli (“the Glory of the Sky”) my first fullsize tiedye balloon. She’s the world’s largest tiedye, with 196 spirals, made from ~1000 meters of white nylon. So much joy, beauty and adventure ! #ArtAdventCalendar
December 4, 2024 at 6:48 PM
What I love most is putting flying fractal art into the big blue sky. This is Gloria Caeli (“the Glory of the Sky”) my first fullsize tiedye balloon. She’s the world’s largest tiedye, with 196 spirals, made from ~1000 meters of white nylon. So much joy, beauty and adventure ! #ArtAdventCalendar
Reposted by Donald DeLand
This seems like the right kind of question to be asking. Our math-policy discourse seems to focus on indiscriminate acceleration/deceleration & less on the possibilities of changing practices within classrooms.
hechingerreport.org/proof-points...
hechingerreport.org/proof-points...
Thrown into the deep end of algebra
An experiment put remedial math students into ninth grade algebra and many succeeded
hechingerreport.org
December 4, 2024 at 3:00 PM
This seems like the right kind of question to be asking. Our math-policy discourse seems to focus on indiscriminate acceleration/deceleration & less on the possibilities of changing practices within classrooms.
hechingerreport.org/proof-points...
hechingerreport.org/proof-points...
Reposted by Donald DeLand
New: Our 2024 impact report is ready to share! HRP has celebrated many important milestones this year on our pathway to restoring humanity to education. See our latest impact report for an overview of our work and where we're going next.
https://www.humanrestorationproject.org/impact
https://www.humanrestorationproject.org/impact
December 2, 2024 at 5:45 PM
New: Our 2024 impact report is ready to share! HRP has celebrated many important milestones this year on our pathway to restoring humanity to education. See our latest impact report for an overview of our work and where we're going next.
https://www.humanrestorationproject.org/impact
https://www.humanrestorationproject.org/impact
Reposted by Donald DeLand
2/2
Can't emphasize this finding too strongly: It's not just that explicit instruction of procedures is less useful than helping kids to construct mathematical principles for themselves. It's that explicit instruction of procedures can actually do damage by impeding understanding.
Can't emphasize this finding too strongly: It's not just that explicit instruction of procedures is less useful than helping kids to construct mathematical principles for themselves. It's that explicit instruction of procedures can actually do damage by impeding understanding.
November 25, 2024 at 1:01 PM
2/2
Can't emphasize this finding too strongly: It's not just that explicit instruction of procedures is less useful than helping kids to construct mathematical principles for themselves. It's that explicit instruction of procedures can actually do damage by impeding understanding.
Can't emphasize this finding too strongly: It's not just that explicit instruction of procedures is less useful than helping kids to construct mathematical principles for themselves. It's that explicit instruction of procedures can actually do damage by impeding understanding.
Reposted by Donald DeLand
1/2
Teach kids principles *and* procedures in math? Nope. This 1991 study found that the destructive effects of step-by-step direct instruction aren't offset by adding richer content: is.gd/wMYgY9. And this study 25 years later confirmed it: bit.ly/3Nt6KCY...
Teach kids principles *and* procedures in math? Nope. This 1991 study found that the destructive effects of step-by-step direct instruction aren't offset by adding richer content: is.gd/wMYgY9. And this study 25 years later confirmed it: bit.ly/3Nt6KCY...
is.gd
November 25, 2024 at 1:01 PM
1/2
Teach kids principles *and* procedures in math? Nope. This 1991 study found that the destructive effects of step-by-step direct instruction aren't offset by adding richer content: is.gd/wMYgY9. And this study 25 years later confirmed it: bit.ly/3Nt6KCY...
Teach kids principles *and* procedures in math? Nope. This 1991 study found that the destructive effects of step-by-step direct instruction aren't offset by adding richer content: is.gd/wMYgY9. And this study 25 years later confirmed it: bit.ly/3Nt6KCY...
Reposted by Donald DeLand
Yes! And the thing is, we have similar data for kids, too, showing burnout, disengagement, stress, & anxiety all characterize their school experience.
If school is burning out kids & adults alike, doesn't it make sense to do SOMETHING differently??
If school is burning out kids & adults alike, doesn't it make sense to do SOMETHING differently??
November 18, 2024 at 2:51 PM
Yes! And the thing is, we have similar data for kids, too, showing burnout, disengagement, stress, & anxiety all characterize their school experience.
If school is burning out kids & adults alike, doesn't it make sense to do SOMETHING differently??
If school is burning out kids & adults alike, doesn't it make sense to do SOMETHING differently??
Reposted by Donald DeLand
We've written a Researcher's Guide to Bluesky!
It's a bit like all those other useful guides to Bluesky, but with several useful insights from University of York academics about using the platform, and we'd love it if it was reposted far and wide...
>> blogs.york.ac.uk/library/2024...
🧵 below
It's a bit like all those other useful guides to Bluesky, but with several useful insights from University of York academics about using the platform, and we'd love it if it was reposted far and wide...
>> blogs.york.ac.uk/library/2024...
🧵 below
The Researcher’s Guide to Bluesky – The Library, Learning, Archives and Wellbeing Blog
blogs.york.ac.uk
November 13, 2024 at 1:26 PM
Reposted by Donald DeLand
New Comment in Nature Reviews Psychology:
'Beliefs about success are prone to cognitive fallacies' by Brooke N. Macnamara, Richard W. Prather (@pratherlab.bsky.social) & Alexander P. Burgoyne
go.nature.com/3Sx8ZuB
#PsychSciSky
'Beliefs about success are prone to cognitive fallacies' by Brooke N. Macnamara, Richard W. Prather (@pratherlab.bsky.social) & Alexander P. Burgoyne
go.nature.com/3Sx8ZuB
#PsychSciSky
Beliefs about success are prone to cognitive fallacies - Nature Reviews Psychology
Who will achieve high marks in school, flourish in their career or become an Olympian? Current theories of achievement provide answers that are intuitively appealing but scientifically flawed. Consequ...
go.nature.com
November 10, 2023 at 7:53 PM
New Comment in Nature Reviews Psychology:
'Beliefs about success are prone to cognitive fallacies' by Brooke N. Macnamara, Richard W. Prather (@pratherlab.bsky.social) & Alexander P. Burgoyne
go.nature.com/3Sx8ZuB
#PsychSciSky
'Beliefs about success are prone to cognitive fallacies' by Brooke N. Macnamara, Richard W. Prather (@pratherlab.bsky.social) & Alexander P. Burgoyne
go.nature.com/3Sx8ZuB
#PsychSciSky
Reposted by Donald DeLand
Our latest video for @humrespro.bsky.social explores The Uniquely American Problem of Gun Violence and the issues it creates for schools:
youtu.be/vzefp3x3kQs?...
youtu.be/vzefp3x3kQs?...
The Uniquely American Problem of Gun Violence
Chris & Nick examine the problem of American gun violence, especially as it relates to schools, as a global outlier. America has millions more guns than peop...
youtu.be
November 4, 2023 at 5:31 PM
Our latest video for @humrespro.bsky.social explores The Uniquely American Problem of Gun Violence and the issues it creates for schools:
youtu.be/vzefp3x3kQs?...
youtu.be/vzefp3x3kQs?...