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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Genesis Mission – A National Mission to Accelerate Science Through AI

https://genesis.energy.gov/
1•Anon84•1m ago•0 comments

Design Follows Data Structures

https://www.tedinski.com/2019/01/29/data-structures-are-fundamental.html
1•plutonium3345•2m ago•0 comments

We one shotted an AI link building tool

3•tscull•5m ago•0 comments

Maybe some people should just give up [video]

https://www.youtube.com/watch?v=rsoEipuwXiI
1•koakuma-chan•5m ago•0 comments

I tracked 609 food additives across 817K products to find awareness gaps

https://compareadditives.com
2•markvitals•5m ago•0 comments

GrapheneOS ceases operations in France amid pressure and legal threats

https://alternativeto.net/news/2025/11/grapheneos-ceases-operations-in-france-amid-pressure-and-l...
2•airhangerf15•8m ago•0 comments

Are LLMs the Best That They Will Ever Be?

https://asimovaddendum.substack.com/p/are-llms-the-best-that-they-will
2•rufusrock•8m ago•1 comments

Scientists can now watch metal crystals grow inside liquid metal

https://theconversation.com/scientists-can-now-watch-metal-crystals-grow-inside-liquid-metal-270451
3•billybuckwheat•15m ago•0 comments

Automating Linux Backups with Rsync: A Set-and-Forget Strategy

https://orioninsist.org/blog/linux-automated-backup-rsync-guide/
1•orioninsist•19m ago•0 comments

Show HN: Free macro dashboards with downloadable charts (e.g., EUR/USD)

https://fxmacrodata.com/dashboard/EUR_USD
1•roberttidball•21m ago•1 comments

Show HN: Real-time system that tracks how news spreads across 200k websites

https://yandori.io/news-flow/
1•antiochIst•22m ago•1 comments

Credits Are Not It

https://hengar.pika.page/posts/credits-are-not-it
2•hengar•25m ago•0 comments

Space: 1999 – Special Effects Techniques

https://catacombs.space1999.net/main/pguide/upsfx.html
5•exvi•30m ago•0 comments

Show HN: Runtime Verification for SQL Agents

https://github.com/yudduy/sql_exenv
1•yudduy•31m ago•1 comments

In Praise of Bibliomania

https://lithub.com/nothing-better-than-a-whole-lot-of-books-in-praise-of-bibliomania/
3•bookofjoe•32m ago•0 comments

Other Winfield Creations (2002)

https://c-we.com/piranha/page9.htm
1•exvi•33m ago•0 comments

GM Reward Loophole Explained: Cars Paid Off in Seconds

https://resellcalendar.com/news/news/gm-reward-loophole-explained-cars-paid-off-in-seconds/
3•typeofhuman•33m ago•1 comments

Deconstructing the Spinner: A One on One chat with Gene Winfield (2000)

https://media.bladezone.com/contents/film/interviews/gene-winfield/
1•exvi•35m ago•0 comments

A man who's been waiting in jail for his day in court for 6 years

https://substack.com/inbox/post/178811090
2•msdrigg•35m ago•0 comments

Singapore orders Apple, Google to prevent gov spoofing on messaging platforms

https://www.reuters.com/world/asia-pacific/singapore-orders-apple-google-prevent-government-spoof...
3•phantomathkg•38m ago•0 comments

Proton Meet: Secure, end-to-end encrypted video conferencing

https://proton.me/meet
13•absqueued•51m ago•2 comments

Mystery of the Quintic

https://youtu.be/9HIy5dJE-zQ
1•surprisetalk•53m ago•0 comments

Show HN: Agentic Arena – 52 tasks implemented by Opus 4.5, Gemini 3, and GPT-5.1

https://arena.logic.inc/
1•sgk284•54m ago•2 comments

Employee quits job over an Nvidia RTX 5060

https://www.tomshardware.com/pc-components/gpus/employee-quits-job-over-an-nvidia-rtx-5060-intern...
14•R_Uttam•56m ago•10 comments

AgentDevCamp

https://agentdevcamp.com/
1•mooreds•1h ago•0 comments

Defending the cloud: Azure neutralized a record-breaking 15 Tbps DDoS attack

https://techcommunity.microsoft.com/blog/azureinfrastructureblog/defending-the-cloud-azure-neutra...
3•thunderbong•1h ago•0 comments

CA spent over $450M on a new 911 system. It's now scrapping the flawed design

https://www.sacbee.com/news/politics-government/the-state-worker/article312576329.html
3•svggrfgovgf•1h ago•3 comments

The chemical attack that forced the Northern line's extraordinary repair

https://www.ianvisits.co.uk/articles/the-hidden-chemical-attack-that-forced-the-northern-lines-ex...
2•zeristor•1h ago•0 comments

Meta Execs Privately Compared Instagram to Addictive Drug, Court Filing Shows

https://www.nationalreview.com/news/meta-researchers-privately-compared-instagram-to-addictive-dr...
8•fortran77•1h ago•1 comments

After nearly 100 years, scientists may have detected dark matter

https://www.u-tokyo.ac.jp/focus/en/press/z0508_00433.html
5•geox•1h ago•2 comments