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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/

Trump signs EO for fewer childhood vaccines, falsely linking shots to autism

https://www.cnbc.com/2026/08/10/trump-vaccine-executive-order-autism.html
1•TrackerFF•2m ago•0 comments

Terence Tao creates his first meme

https://mathstodon.xyz/@tao/117068266071803252
2•u1hcw9nx•6m ago•0 comments

London still dominates Britain's datacenter map, but the regions are powering up

https://www.theregister.com/systems/2026/08/10/london-still-dominates-britains-datacenter-map-but...
1•01-_-•7m ago•0 comments

Anthropic's New Tool Could Expose AI-Written Novels

https://www.businessinsider.com/anthropic-watermarking-feature-stops-undetected-ai-generated-writ...
1•01-_-•8m ago•0 comments

CortexBrain: A monitoring pipeline that integrates with your AI agents

https://github.com/CortexFlow/CortexBrain
1•LorenzoTettaman•8m ago•1 comments

The US hired 2k gamers to fix the air traffic control crisis

https://www.polygon.com/fortnite-united-states-air-traffic-control/
1•croes•8m ago•0 comments

First measurement of antineutrinos from spent nuclear fuel

https://www.mpi-hd.mpg.de/mpi/en/public-relations/news/news-item/first-measurement-of-antineutrin...
1•croes•16m ago•0 comments

A Simple TODO Application

https://codemadness.org/todo-application.html
2•hskimse•16m ago•0 comments

Scope and Lifetime Restrictions in Swift

https://github.com/rjmccall/swift-evolution/blob/scope-restrictions/scope-restriction-models.md
1•matt_d•24m ago•1 comments

Unikernel

https://en.wikipedia.org/wiki/Unikernel
1•tosh•25m ago•0 comments

Australian Wealth Tracker

https://auravest.ai
1•mozzinator•26m ago•1 comments

Excited to see the results of the agent memory leaderboard

https://x.com/AgentMemoryL
1•IreneAI•27m ago•0 comments

An oil field became California's first carbon vault

https://calmatters.org/environment/2026/08/california-resources-corporation-carbon-terra-vault/
1•geox•27m ago•0 comments

Instant Sudoku

https://sudokuaz.com/
2•Boryto•29m ago•0 comments

The pain of integration with the Reddit API

https://growomat.com/blog/reddit-ads-api-integration-lessons
1•nickdefo•30m ago•0 comments

Show HN: XIRP Agentic Harness by Spotify

https://xirp.spotify.com/
2•slowey•32m ago•0 comments

Scientists find 200k barrels of radioactive waste in the ocean

https://geekspin.co/scientists-find-200000-barrels-of-radioactive-waste/
3•_tk_•33m ago•1 comments

helppeer.ai

https://helppeer.ai/llms.txt
1•tosh•35m ago•0 comments

The mathematical beauty of hyperbezier curves

https://linebender.org/blog/hyperbezier/
3•coffeeaddict1•37m ago•0 comments

Stealing Reasoning Traces from Proprietary LLM APIs

https://arxiv.org/abs/2608.09867
1•sbulaev•38m ago•0 comments

Notes from China, Q3 2026

https://milan.cvitkovic.net/china_notes_q3_2026/
2•ridiculous_leke•40m ago•0 comments

AI Slop Backlash Is Starting to Change Platform Policy

https://ai-updates.net/ai-slop-backlash-changing-platform-policy/
2•ashurandi•40m ago•0 comments

Ask HN: Anyone have solution to Opus verbosity in Claude Code?

2•firemelt•40m ago•0 comments

The mathematical physics of rainbows and glories(2001) [pdf]

https://tlakoba.w3.uvm.edu/AppliedUGMath/auxpaper_rainbow_glory_review.pdf
1•num42•42m ago•0 comments

Local models will not win

https://www.seangoedecke.com/local-models-will-not-win/?trk=feed_main-feed-card_feed-article-content
4•sylvainkalache•43m ago•1 comments

AI professors are negotiating the new realities of academic research

https://www.technologyreview.com/2026/08/10/1141597/ai-professors-are-negotiating-the-new-realiti...
4•joozio•43m ago•0 comments

Invoice Software for Freelancers – InvoiceAce v2 Released

https://invoiceace.app
1•nimsarajay•44m ago•0 comments

The Water Footprint of AI

https://doi.org/10.1016/j.watres.2026.125866
3•MASNeo•45m ago•0 comments

Looking for free TTS? Try this one

https://neuronai.uz/en/tts/
1•yutabek•46m ago•0 comments

Sign of the Times: An Account of the First (In the USA) Tech Workers' Strike

https://longhaulmag.com/first-tech-workers-strike/
3•chobeat•46m ago•0 comments