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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/

Show HN: My recommendations after reading 1,500 books

https://brianhama.com
1•brianhama•9s ago•0 comments

1945 Empire State Building B-25 crash

https://en.wikipedia.org/wiki/1945_Empire_State_Building_B-25_crash
1•SockThief•2m ago•0 comments

United States Occupation of Haiti

https://en.wikipedia.org/wiki/United_States_occupation_of_Haiti
1•SockThief•3m ago•0 comments

TUIParts

https://tuiparts.sh
1•handfuloflight•3m ago•0 comments

FIFA plan for Kushner-backed $20B operation to run World Cup meets UEFA fury

https://apnews.com/article/world-cup-fifa-investors-kushner-infantino-uefa-8345e0864e3a2176327338...
1•petethomas•4m ago•0 comments

Show HN: Mustuse.ai – Open-source automated ranking system run by agents

https://mustuse.ai
1•daimajia•4m ago•0 comments

SessionRadar – Monitor Claude Code and Codex sessions from your menu bar

https://sessionradar.com
1•mariohercules•4m ago•0 comments

My girlfriend broke up with me – This is my body's reaction to the news

https://old.reddit.com/r/dataisbeautiful/comments/1v874lz/my_girlfriend_broke_up_with_me/
1•refp•5m ago•1 comments

Where are my iCloud files?

https://bombich.com/blog/2026/07/28/local-backups-of-cloud-storage
1•chmaynard•6m ago•0 comments

Northstar Browser 1.0.5

3•andreasrosdal•6m ago•0 comments

Sam Altman on AGI, Compute, and Human Agency [video]

https://www.youtube.com/watch?v=XDB5beon4DY
2•hakkikonu•6m ago•0 comments

Workplaces look for cheaper AI as 'tokenmaxxing' fades as a corporate fad

https://apnews.com/article/ai-token-openai-anthropic-corporate-31bb80ac1cd7862d05f6397177d826b1
1•petethomas•7m ago•0 comments

Show HN: A tool to privately timestamp a claim and reveal it on schedule

https://prove-yourself.sebmellen.com/
1•sebmellen•7m ago•1 comments

NIH Will End Dangerous Gain-of-Function Research

https://www.wsj.com/opinion/jay-bhattacharya-how-nih-will-end-dangerous-gain-of-function-research...
1•LostMyLogin•7m ago•0 comments

New York school pauses plan to deploy humanlike AI robot teacher after backlash

https://apnews.com/article/new-york-school-artificial-intelligence-robot-teacher-c2126c704104c4eb...
2•petethomas•8m ago•0 comments

Dice: Detailed Inter-Chiplet End-to-End PHY Modeling for Chiplet Simulation

https://arxiv.org/abs/2607.24221
1•Jimmc414•11m ago•0 comments

Substackers Say New AI Detection Tool Is a 'Witch Hunt'

https://www.404media.co/substackers-say-new-ai-detection-tool-is-a-witch-hunt/
2•Jimmc414•11m ago•0 comments

Poolside Desktop Assistant – multi harness ACP app for macOS

https://poolside.ai/blog/introducing-poolside-desktop-assistant
1•appleton•14m ago•0 comments

Show HN: I was tired of opening 2 tabs for every HN link, so I made a userscript

https://github.com/twalichiewicz/HNewhere
2•twalichiewicz•14m ago•0 comments

I Asked Gemini to Read 300-Year-Old Portuguese Parish Records

https://mariofilho.com/gemini-portuguese-parish-records/
1•mariofilho•15m ago•0 comments

Architects, Anthills, and AI: A Nobel Prize's Lesson on Scientific Progress

https://kovashikawa.github.io/ai/architecs-anthill-ai/
1•rkovashikawa•15m ago•0 comments

Artist sues AI meme generator for selling deeply personal comic as ad template

https://arstechnica.com/tech-policy/2026/07/artist-sues-ai-meme-generator-for-selling-deeply-pers...
2•inerte•16m ago•1 comments

Parlay Bets Are Burning Gamblers as Market Takes Off on Kalshi

https://news.bloomberglaw.com/securities-law/parlay-bets-are-burning-gamblers-as-market-takes-off...
1•1vuio0pswjnm7•16m ago•0 comments

The Improbable Journey of Impossible Creatures

https://www.vg247.com/the-improbable-journey-of-impossible-creatures
1•endofreach•17m ago•0 comments

A Two-Person Startup Has Fixed One of the Most Hated Sounds in Modern Life

https://www.wired.com/story/a-two-person-startup-has-fixed-one-of-the-most-hated-sounds-in-modern...
1•littlexsparkee•18m ago•0 comments

AIssuer – calibrated on 500 hard issues from mature software

https://github.com/hi-mundo/AIssuer
1•hi-mundo•22m ago•0 comments

Are All the Good Men Married?

https://www.cremieux.xyz/p/are-all-the-good-men-married
3•gmays•23m ago•1 comments

AI Deals Struggle to Get Across Finish Line Bond Binge Enters Weak Demand Era

https://finance.yahoo.com/markets/stocks/articles/ai-bond-binge-enters-era-181015249.html
1•mapping365•23m ago•0 comments

AI the Singularity and where we are

1•nathanyz•24m ago•0 comments

The Economist Interviewed Elon Musk

https://www.economist.com/insider/the-insider/an-interview-with-elon-musk
1•MASNeo•25m ago•1 comments