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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/

Dosu Security Incident Post-Mortem

https://dosu.dev/security/incident-2026-11-02
1•chaosmachine•31s ago•0 comments

Show HN: Nova Buddy AI – a friendly free AI assistant for everyday jobs

https://novabuddyai.com
1•NovaBuddyAI•3m ago•0 comments

Learning about Markets from Models: Evidence from an AI Hiring Platform

https://arxiv.org/abs/2611.01226
1•rohanm93•5m ago•0 comments

Show HN: Free image compressor that never uploads your photos

https://swearbyte.com/tools-hub/image-compressor/
1•hamzanusrat482•16m ago•0 comments

The Other Nefertiti(2015)

https://alloversky.com/puzzlepieces/the-other-nefertiti
1•dmbche•17m ago•0 comments

Show HN: SwearByte – free tools that run in the browser

https://swearbyte.com/
1•hamzanusrat482•19m ago•1 comments

German Tank Problem

https://en.wikipedia.org/wiki/German_tank_problem
1•scapecast•21m ago•0 comments

LLMs Figure Out What You Mean – No Math Degree Required – Zarar's Blog

https://zarar.dev/how-ai-figures-out-what-you-mean-no-math-required/
1•fagnerbrack•24m ago•0 comments

Code sandboxes isolate what agents run. What isolates what they write?

https://argonlabs.tech/blog/code-sandbox-vs-data-sandbox-for-ai-agents
1•argonlabs•24m ago•0 comments

What it takes to operate a SaaS when AI agents write all the code

https://docspring.com/blog/posts/operating-a-saas-when-ai-agents-write-all-the-code/
1•nathan_f77•25m ago•0 comments

Isomorphic Keyboard Instruments: Jankó Piano and Chromatone

https://docs.google.com/document/d/e/2PACX-1vSlhY8Iqx9AHPsiH7UFwfPz3HxtTG3sOy1A5b1CEOqCAlooB3JPrG...
1•WorldPeas•25m ago•0 comments

Durable Execution Agents

https://martinfowler.com/articles/durable-execution-agents.html
2•afhammad•29m ago•0 comments

Privacy-Friendly Website Analytics Tools for 2026

https://ajseven.medium.com/7-best-website-analytics-tools-for-2026-open-source-self-hosted-privac...
1•its_ajseven•31m ago•0 comments

The Lasting Influence of John Berger

https://www.newyorker.com/magazine/2026/11/16/john-berger-a-life-tom-overton-book-review
1•prismatic•41m ago•0 comments

Foreign Comiket attendees locked out as Ticketpay geoblocks non-Japanese IPs

https://twitter.com/kotorisenseiba/status/2120374093493248166
1•phantomathkg•42m ago•0 comments

Show HN: Rusty Valve – Chemical plant valve benchmark where ACT scores 0/36

https://github.com/rusty-valve/rusty-valve
2•CrystalDai•46m ago•0 comments

NRC Issues First Construction Permit in Nearly 60 Years for Gas-Cooled Reactor

https://www.nrc.gov/about-nrc/news-releases/2026/26-083
2•geox•48m ago•0 comments

The Forever-Day Problem: Unsupported Software on the Public Internet

https://blog.fortirix.com/blog/forever-day/
1•SecurityNinjaGu•52m ago•0 comments

Ring Robotics

https://ring.com/ring-robotics
2•gregsadetsky•54m ago•0 comments

Show HN: App to help parents find, plan, and review outings with their kids

https://sproutings.app/
1•brendanperry•54m ago•0 comments

Data Centers and Local Labor Markets: Evidence from the Texas Experience

https://jrap.scholasticahq.com/article/172680-data-centers-and-local-labor-markets-evidence-from-...
1•toomuchtodo•55m ago•1 comments

Richard Posner, influential and iconoclastic federal judge, dies at 87

https://www.washingtonpost.com/obituaries/2026/11/11/richard-posner-influential-iconoclastic-fede...
3•pseudolus•58m ago•2 comments

When LIMIT 10 Means 500

https://vito.io/articles/2026-10-25-when-limit-10-means-500
1•ykgoon•1h ago•0 comments

Bad ideas that aren't bad anymore

https://devonestes.com/bad-ideas-that-arent-bad-anymore
2•sevenseacat•1h ago•0 comments

Show HN: Eyes-free spoken N-Back where you choose the words (single HTML file)

https://vernetit.github.io/spoken-n-back/
1•quietcircuit•1h ago•1 comments

Neurons as an Interpretable Basis

https://www.goodfire.com/research/neurons-as-an-interpretable-basis
1•gmays•1h ago•0 comments

Some Memories of Early Anthropic

https://www.lesswrong.com/posts/9PiLfo6iQbbDWFHv7/some-memories-of-early-anthropic
3•wslh•1h ago•0 comments

The Myth of "Neutral Code"

https://foss.life/notes/2026/the-myth-of-neutral-code/
3•tachalorah•1h ago•0 comments

Fortell DSP Pipeline

https://fortell-demo-hoeksema.vercel.app/
1•hoeksema•1h ago•0 comments

Show HN: Paper Radar – daily ArXiv triage, now runs on Claude Haiku too

https://github.com/Eliot5566/JEV-Paper-Radar
1•eliot5566•1h ago•0 comments