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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo ago
> Nonetheless, Bloom was on to something: Tutoring and mastery learning do have a degree of experimental support, and fortunately it seems that carefully designed software systems can completely replace the instructional side of traditional teaching, achieving better results, on par with one to one tutoring. However, designing them is a hard endeavour, and there is a motivational component of teachers that may not be as easily replicable purely by software.

I've been working on an implementation of mastery learning and other related techniques called Trane (https://github.com/trane-project/trane/) for the past three years or so. Mastery learning is the main one, but it also integrates spaced repetition, interleaving, mixing difficulties, and reward propagation (doing well or bad in an exercise affects how related exercises are scheduled).

I think it works pretty well, but you need to pair it with proper pedagogy of the skill you want to learn and the proper curriculum. The latter is the hardest part, so it's being my main limitation. I've used some external resources to build courses, and they work well, but obviously it would work much better with a full curriculum built from the ground up.

Currently working on Pictures Are For Babies (https://picturesareforbabies.com/), which is meant to do just that for literacy. I am hoping to do a first release soon. As for the motivation angle, the solution in this particular instance is fairly simple. Use the software to enforce scheduling andpedagogy,y and a human tutor to provide emotional and social support. This division allows any literate person to become an effective tutor with a few hours of training.

I am hoping that the average student can complete the whole curriculum in five years. That would mean that (assuming they start at between 4 and 5 years old), the average student would have college-level reading and writing skills by the time they are nine or ten.

Most complete explanation so far is in the pedagogy page: https://picturesareforbabies.com/home/pedagogy/

KnexCoin (NEX) soft forked Bitcoin and now Quantum Ready

https://www.untraceablex.com
1•winnertakeall•19s ago•1 comments

Dot – A Siri Replacement learns skills through Apple Shortcuts

https://apps.apple.com/us/app/dot-ai-personal-assistant/id6758647775
1•forestplasencia•20s ago•0 comments

TAL emulation of the Roland Jx-8P synth

https://tal-software.com/products/tal-j8x
1•robotswantdata•20s ago•0 comments

Show HN: View spending habits for 50 cents/month. Data stored locally, no sub

https://www.therealmyfiapp.com/
1•onounoko•1m ago•0 comments

Anthropic wins preliminary injunction in Trump DoD fight

https://www.cnbc.com/2026/03/26/anthropic-pentagon-dod-claude-court-ruling.html
1•gmays•1m ago•0 comments

The Conversation Is the Commit

https://aicoding.leaflet.pub/3mhxvpam4z22z
1•mpweiher•2m ago•0 comments

Most developers are doing integration testing wrong

https://keploy.io/blog/community/integration-testing-a-comprehensive-guide
1•01-_-•3m ago•0 comments

GitHub Incident with Pull Requests: High Percentage of 500s

https://www.githubstatus.com/incidents/ml7wplmxbt5l
1•pera•3m ago•0 comments

Show HN: Reprompt – Analyze what you type into AI tools, not what they output

https://github.com/reprompt-dev/reprompt
1•LuxBennu•3m ago•0 comments

President's new science council: 9 billionaires and 1 scientist

https://www.scientificamerican.com/article/trumps-new-science-panel-includes-9-tech-billionaires-...
3•grvbck•4m ago•1 comments

Show HN: Solar buffer tank heating calculator – single-file, no dependencies

https://achildrenmile.github.io/pufferspeicher-rechner/
2•achildrenmile•5m ago•1 comments

I shipped this cinematic mockup tool in 24 hours

https://www.ultramock.io/
1•joshmillgate•6m ago•0 comments

"Founder Mode" on Ankylosing Spondylitis: Remission with Supplements

https://eidel.io/posts/founder-mode-on-ankylosing-spondylitis-remission-with-supplements
1•olieidel•7m ago•0 comments

Private Equity's Great Escape

https://prospect.org/2026/03/31/apr-2026-magazine-private-equitys-great-escape-continuation-funds...
1•toomuchtodo•7m ago•0 comments

Less Dead

https://www.lesswrong.com/posts/E9xfgJHvs6M55kABD/less-dead
1•paulpauper•7m ago•0 comments

Show HN: Weejur – Paste HTML to Publish for Free with GitHub Pages

https://weejur.com
1•npilk•7m ago•0 comments

Jevons's Other Machine

https://www.jonadas.com/writing/essays/jevons-other-machine
1•paulpauper•8m ago•0 comments

Show HN: Audio Visualizer HUD for macOS

https://www.krisdigital.com/en/blog/2026/03/28/macos-audio-visualizer-rust/
1•krisdigital•8m ago•0 comments

The true story of the at-home pregnancy test

https://thehustle.co/newsletters/25-03-2026
1•paulpauper•8m ago•0 comments

Most 'overengineering' is just anticipating change

https://iamgio.eu/2026-03-28-overengineering/
2•iamgioh•9m ago•0 comments

Italy blocks US use of Sicily air base for Middle East war

https://www.politico.eu/article/italy-blocks-us-use-of-sicily-air-base/
1•prmph•10m ago•0 comments

IRGC threatens imminent strikes on US tech giants across the Middle East

https://www.i24news.tv/en/news/middle-east/iran-eastern-states/artc-irgc-threatens-strikes-on-us-...
2•prmph•11m ago•0 comments

OpenClaw for Dummies (getting to a minimum viable OpenClaw agent)

https://tessl.io/blog/openclaw-for-dummies/
1•macey•11m ago•0 comments

Congratulations, Here's a Pay Cut

https://www.businessinsider.com/employees-taking-pay-cuts-huge-numbers-2026-3
1•restlessforge•11m ago•0 comments

Show HN: I built a directory to save local PTs from the "pay-per-lead" trap

1•chadders13•11m ago•1 comments

Clawdia – Claude Code/Codex and with full OS control – electron app with browser

https://github.com/chillysbabybackribs/Clawdia7.1
1•op15•12m ago•0 comments

This specific GitHub issue is crashing

https://github.com/npm/cli/issues/4828
1•n943qw2•13m ago•1 comments

How Many Times Should a "Math-Y Kid" See a Math Idea Before They Understand It?

https://kidswholovemath.substack.com/p/how-many-times-should-a-math-y-kid
1•sebg•14m ago•0 comments

DNS is Simple. DNS is Hard

https://www.wespiser.com/posts/2026-03-29-dns-simple-dns-hard.html
1•wespiser_2018•14m ago•1 comments

Aki.io – Open-source AI models via API on EU infrastructure (OpenAI-compatible)

https://aki.io
1•headkit•14m ago•1 comments