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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/

Ask HN: What is best thing to do if you are gonna rebuilt your website

1•anitroves•7m ago•0 comments

Forcing Fable to Generate Disinformation

https://blog.j11y.io/2026-07-18_Jailbreaking-Fable-disinformation/
1•padolsey•12m ago•0 comments

Pascal Prediction Market

https://blog.usv.com/pascal
1•wslh•17m ago•0 comments

AI Bubble vs. Dot Com Crash. History Is Repeating

https://www.youtube.com/watch?v=zWJ-g5u9Rqs
9•cable2600•19m ago•1 comments

DanFootball

https://danfootball.com
1•declaj•20m ago•1 comments

They Call Her 'The Assassin' on Wall Street–and She Has a New Target

https://www.wsj.com/finance/fahmi-quadir-industry-assassin-3d6ccd82
1•tortilla•20m ago•1 comments

Anthropic's newest ad is creeping people out

https://techcrunch.com/2026/07/14/anthropics-newest-ad-is-creeping-people-out/
2•gnabgib•23m ago•0 comments

Show HN: Tailguard – A tested CVaR-based optimizer for stochastic reshoring

https://github.com/dismissed8582/tailguard
1•dismissed181•31m ago•0 comments

Microsoft's "Digital Escorts" Left DoD Vulnerable to Chinese Hackers

https://www.propublica.org/podcast/microsoft-digital-escorts-china-defense-department
7•jnord•36m ago•1 comments

Popular sugar substitutes linked to faster brain aging

https://www.sciencedaily.com/releases/2026/07/260717033213.htm
7•toomuchtodo•46m ago•1 comments

Harness Engineering

https://github.com/lopopolo/harness-engineering
3•handfuloflight•46m ago•0 comments

Open-Source Communism

https://continuouswritting.substack.com/p/open-source-communism
3•operator_nil•48m ago•0 comments

Codex Resets

https://codex-resets.com/
43•denysvitali•49m ago•36 comments

Why 'admin nights' are the new book club for busy adults

https://www.cnn.com/2026/01/26/health/admin-night-adults-productivity-trend-wellness
2•akman•58m ago•0 comments

European Court Confirms Ethical Veganism Is a Protected Philosophical Belief

https://veganfta.com/articles/2026/07/17/european-court-confirms-ethical-veganism-is-a-protected-...
3•salutis•58m ago•1 comments

Godecompose: Go decompiler that uses pattern matchers

https://github.com/cookiengineer/godecompose
2•cookiengineer•1h ago•1 comments

Prepaid Cellphone Plans – Comparison Site

https://prepaidcompare.net
2•WarOnPrivacy•1h ago•1 comments

CannonSmash Web

https://github.com/jgbrwn/cannonsmash-web
1•indigodaddy•1h ago•0 comments

Show HN: Ilya Sutskever's AI reading list into a learning RPG – using kimi k3

https://ilya-papers-quest.naigap.com/#/
2•praveer13•1h ago•0 comments

A free PTE Core practice platform with instant AI scoring

https://ptecorepractice.com
1•justinzhou01•1h ago•1 comments

Retrotvs – Channel-surf the past now by choosing any of the TV sets

https://70s.myretrotvs.com/
1•modinfo•1h ago•0 comments

On Ethics and Usefulness

https://manuelmoreale.com/thoughts/on-ethics-and-usefulness
2•HotGarbage•1h ago•0 comments

New hybrid positioning system promises reliable tracking where GPS fails

https://www.qmul.ac.uk/news/latest-news/2026/science-and-engineering/se/new-hybrid-positioning-sy...
2•hhs•1h ago•0 comments

Multi-Agent LLMs Fail to Explore Each Other

https://arxiv.org/abs/2607.11250
1•Anon84•1h ago•1 comments

Statistical test helps judge the value of personalization

https://news.stanford.edu/stories/2026/07/statistical-test-personalization-k-fold
2•hhs•1h ago•0 comments

Java was a three-day hotfix away from dying horribly on stage

https://www.theregister.com/devops/2026/07/18/java-was-a-three-day-hotfix-away-from-dying-horribl...
1•jnord•1h ago•0 comments

The headache of hospital pricing

https://lawliberty.org/the-headache-of-hospital-pricing/
2•hhs•1h ago•0 comments

The 3:47 Am Wake‑Up Call That Changed Everything

https://hackenewhome.blogspot.com/p/code-optimise-pour-blogger-suppression.html
1•AllForAll•1h ago•0 comments

Juggling for Blind People

https://www.jugglingforblindpeople.com/
3•pipnonsense•1h ago•0 comments

Even Microsoft couldn't make Windows 11 work well on 8GB of RAM

https://www.theverge.com/tech/966937/microsoft-surface-laptop-13-inch-8gb-ram-2026-review
8•GeekyBear•1h ago•4 comments