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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Mark Zuckerberg testifies in social media addiction trial

https://www.dw.com/en/mark-zuckerberg-testifies-in-social-media-addiction-trial/a-76028273
1•Andr2Andr•58s ago•0 comments

Every AI app builder outputs React Native. I chose real Swift instead

1•Nativeline•2m ago•0 comments

After AI, there is no product

https://sidu.in/essays/after-ai-there-is-no-product.html
1•kaiwren•2m ago•1 comments

Show HN: From a simple travel expense tracker to a full business platform

https://SparkyMinis.com
1•who_dhanesh•2m ago•0 comments

No Code Web Scraper

https://nocodewebscraper.com/
1•mddanishyusuf•3m ago•0 comments

Jonathan Franzen's "10 rules for novelists"

https://www.futilitycloset.com/2026/02/19/decalogue-3/
1•beardyw•5m ago•0 comments

Eurisko

https://en.wikipedia.org/wiki/Eurisko
1•tosh•7m ago•0 comments

Show HN: Zvario – Branded social media content in seconds

https://zvario.com/
1•dan_j•11m ago•0 comments

Gnome OS Hackfest FOSDEM 2026

https://blogs.gnome.org/adrianvovk/2026/02/18/gnome-os-hackfest-fosdem-2026/
1•JNRowe•11m ago•0 comments

Hassett says authors of New York Fed tariff study should be disciplined

https://www.cnbc.com/2026/02/18/hassett-says-authors-of-new-york-fed-tariff-study-should-be-disci...
1•mraniki•12m ago•1 comments

Interop 2026

https://webkit.org/blog/17818/announcing-interop-2026/
1•nnx•12m ago•0 comments

Will AI kill Software businesses?

1•fluffyandsweet•14m ago•0 comments

Using LLMs to evaluate technical interview performance

https://dokasto.com/blog/we-are-letting-llms-decide/
1•ud0•15m ago•0 comments

My website is now ~2.8x faster after converting it to a Django LiveView SPA

https://en.andros.dev/blog/dd5a0746/my-website-is-now-28x-faster-after-converting-it-to-a-django-...
1•andros•17m ago•0 comments

Gemini will now generate musical slop for users

https://www.theregister.com/2026/02/18/google_musical_slop/
2•beardyw•24m ago•2 comments

Microsoft 365 Copilot for Android or iOS auto-sends files to AI and OneDrive

https://www.windowslatest.com/2026/02/18/microsoft-365-copilot-for-android-or-ios-auto-sends-file...
2•hliyan•24m ago•0 comments

Apps for Startups to Find Founders

https://play.google.com/store/apps/details?id=com.initiumapps.initium4founders&hl=en_US
1•colinbergin•24m ago•1 comments

The Human-in-the-Loop Is Tired

https://pydantic.dev/articles/the-human-in-the-loop-is-tired
2•summerscope•29m ago•1 comments

The 12-Factor App – 15 Years later. Does it Still Hold Up in 2026?

https://lukasniessen.medium.com/the-12-factor-app-15-years-later-does-it-still-hold-up-in-2026-c8...
1•birdculture•33m ago•0 comments

V&A Museum acquires YouTube's earliest video from 2005

https://www.cnn.com/2026/02/18/style/youtube-first-video-victoria-and-albert-museum
1•helsinkiandrew•44m ago•0 comments

Brep.io A new browser based parametric CAD modeler with custom BREP kernel

https://BREP.io
1•mmiscool•46m ago•1 comments

Convert: A universal file format converter, running in the browser

https://p2r3.github.io/convert/
1•memalign•46m ago•0 comments

Show HN: Kore – local AI memory layer with Ebbinghaus forgetting curve

https://github.com/auriti-web-design/kore-memory
1•juanauriti•50m ago•0 comments

The Psychology of Computer Programming by Gerald Weinberg (1998)

https://archive.org/details/psychologyofcomp00unse
2•pramodbiligiri•55m ago•0 comments

One Man Stole $660M. He'll Never Pay It Back

https://www.nytimes.com/2026/02/18/opinion/corruption-trump-accountability.html
1•jimnotgym•55m ago•0 comments

Show HN: Social Cookie Jar – Social media automation for AI agents

https://github.com/Artifact-Virtual/social-cookie-jar
1•artifactvirtual•57m ago•0 comments

Show HN: Deploy OpenClaw on your Own server in one click

https://agentdaddie.com
1•pushkar_aditya•59m ago•0 comments

The strenuous journey from a useful to a usable data science model

https://adri0.com/blog/strenuous-journey-to-a-usable-data-science-model
1•quite-sfwd•1h ago•0 comments

Phill CLI matches GPT-5.3-Codex on EVMbench audits (71% recall, 100% precision)

https://github.com/ayjays132/phill-cli
1•ayjays132•1h ago•2 comments

Show HN: Onairos SDK– Unified Context API, unlocking cross platform user history

https://onairos.io
1•BlasianHokage•1h ago•0 comments