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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

'The young ones are the best ones': Meta's alleged effort to hook kids

https://www.latimes.com/california/story/2026-08-18/california-social-media-addiction-lawsuit-meta
1•1vuio0pswjnm7•1m ago•0 comments

Denavit–Hartenberg Parameters

https://en.wikipedia.org/wiki/Denavit%E2%80%93Hartenberg_parameters
2•gregsadetsky•2m ago•0 comments

Taskuary – Your inbox becomes tasks, your coding CLI works them

https://github.com/ldbumble/taskuary
1•monkeydo09•4m ago•0 comments

'It's a Kind of Magic'

https://sztukacyrku.pl/teksty/its-a-kind-of-magic-or-circus-enchantments-of-reality/
1•jruohonen•5m ago•0 comments

Salesforce Agentforce at total dud for partners

https://www.theregister.com/saas/2026/08/21/salesforce-partners-are-not-seeing-revenue-from-agent...
2•joebuckwilliams•7m ago•0 comments

Do we have free will? Easy Explanation

https://sekor.eu.org/x/world/
1•modinfo•9m ago•0 comments

Game Necromancy: Resurrecting Yahoo Word Racer from Old YouTube Videos

https://jamesshapiro.com/writing/game-necromancy
2•jamesshapiro•11m ago•0 comments

Nvidia just showed that the harness, not the AI model, is now the real hero

https://techcrunch.com/2026/08/21/nvidia-just-showed-that-the-harness-not-the-ai-model-is-now-the...
2•dthread3•11m ago•0 comments

British Groups Are Shaping US Age Verification Laws in 21 US States

https://www.gadgetreview.com/british-groups-are-shaping-us-age-verification-laws-in-21-us-states-...
3•robotnikman•12m ago•1 comments

Burning Mesh: off-grid Meshtastic network for Burning Man

https://www.burningmesh.org
2•gourneau•13m ago•1 comments

Véloura Beauty Uses Firebase Remote Config for A/B Testing

https://gist.github.com/velourabeautyondemand-tech/64fdd133fc36b723823ea01bca41cd9a
1•Huiyu_Cheng•13m ago•0 comments

Contrail-free flying could help the climate

https://www.economist.com/science-and-technology/2026/08/19/contrail-free-flying-could-help-the-c...
3•samizdis•14m ago•2 comments

The Next China Shock Is Here

https://www.nytimes.com/2026/08/21/opinion/ezra-klein-podcast-brad-setser.html
4•rafaelc•19m ago•1 comments

Kindle raises US prices by $40-$50

https://www.reddit.com/r/kindle/comments/1vujton/price_increase_on_kindles/
2•seam_carver•20m ago•0 comments

The Creation of Abulafia

https://blog.veitheller.de/abulafia.html
2•saulpw•21m ago•0 comments

The OpenAI–Hugging Face Incident in Plain English

https://philippdubach.com/posts/openai-hugging-face-incident-plain-english/
1•7777777phil•21m ago•0 comments

UseWok

1•UseWok•24m ago•0 comments

Think you can trust Google reviews in Germany? Think again

https://www.fastcompany.com/91420303/google-review-germany-takedown-europe
1•nixass•25m ago•0 comments

Show HN: Groovebox – self-hosted music library integrated with Discogs and Tidal

https://github.com/danielfalbo/groovebox/
1•danielfalbo•26m ago•0 comments

The Fastest Star in the Milky Way Will Test Relativity

https://www.universetoday.com/articles/the-fastest-star-in-the-milky-way-will-test-relativity
3•consumer451•27m ago•0 comments

Making Audio Stories Interactive with AI: The Story of Schmaudio

http://www.dennisweyland.net/blog/?p=175
2•skchang•27m ago•0 comments

Ask HN: How do you host your vibe coded tools/sites?

1•sakuraiben•27m ago•3 comments

Zero-Knowledge Proofs Aren't Age Verification Silver Bullets

https://www.eff.org/deeplinks/2026/08/zkps-arent-age-verification-silver-bullets
3•birdculture•28m ago•0 comments

Reachpad – make applications you can share instantly

https://reachpad.dev
1•sakuraiben•30m ago•0 comments

Amsterdam, 13 March 1996//Knuth meets NTG members [pdf]

https://tug.org/TUGboat/tb17-4/tb53knun.pdf
1•jruohonen•35m ago•0 comments

Higher Regional Court curbs Amazon: reporting button and algorithms violate DSA

https://www.heise.de/en/news/Higher-Regional-Court-curbs-Amazon-reporting-button-and-algorithms-v...
4•layer8•37m ago•0 comments

Agentic AI overwhelmed CI, and test selection cut queueing from hours to minutes

https://humansystems.dudzik.co/p/when-agents-make-ci-the-bottleneck
1•dudzik•39m ago•0 comments

Why Your Next Long-Haul Layover May Be in Seoul, Not Dubai

https://www.nytimes.com/2026/08/20/world/asia/iran-war-asia-airports-dubai.html
2•bookofjoe•39m ago•1 comments

We replaced our Grafana stack with a single Claude Code skill

https://frigade.com/blog/we-replaced-grafana-with-a-claude-code-skill
1•pancomplex•40m ago•0 comments

AgentCheck – regression testing for AI agents, with diff-aware CI reports

https://github.com/rez-99/agentcheck
1•zz99•42m ago•0 comments