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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

A YC-Backed Startup Left Production AWS Keys Public for 5 Months

https://benzimmermann.dev/blog/pump-vdp-silence
1•kernelrocks•34s ago•0 comments

Plane and ground vehicle collide at New York's LaGuardia airport halting flights

https://www.bbc.com/news/articles/cy01g522ww4o
1•mememememememo•3m ago•0 comments

Show HN: Scenia – open-source IT portfolio planning, runs in browser

https://scenia.website/
1•WaylonKenning•4m ago•0 comments

Bangkok rentals extracted from Facebook Groups

https://bangkokprop.com/
1•tanin•5m ago•0 comments

Microbenchmarking Chipsets for Giggles – By Chester Lam

https://chipsandcheese.com/p/microbenchmarking-chipsets-for-giggles
1•rbanffy•6m ago•0 comments

Thagomizer

https://en.wikipedia.org/wiki/Thagomizer
1•kentbrew•7m ago•1 comments

Earth's climate swings increasingly out of balance

https://wmo.int/news/media-centre/earths-climate-swings-increasingly-out-of-balance
2•rolph•7m ago•0 comments

Ask HN: Running legacy IE/ActiveX clients without local admin rights?

1•Servant-of-Inos•7m ago•0 comments

Whose Problem Are We Solving? A Question That Cuts Through the Fog

https://dunkels.com/adam/whose-problem-are-we-solving/
1•adunk•7m ago•0 comments

Show HN: Mantyx – A platform to orchestrate, manage, and share your agents

https://mantyx.io
1•grillorafael•8m ago•0 comments

Do software engineers think resume builders are useful?

https://applygenius.ai/
1•mikkaai•9m ago•0 comments

Scan for Vulnerabilities with GitHub Security Lab

https://github.blog/security/how-to-scan-for-vulnerabilities-with-github-security-labs-open-sourc...
1•zdkaster•10m ago•0 comments

Hans J. Morgenthau, "We Are Deluding Ourselves in Vietnam" (1965)

https://www.nytimes.com/1965/04/18/archives/we-are-deluding-ourselves-in-vietnam-we-are-deluding-...
2•johntfella•13m ago•0 comments

A vetted map of the agentic AI stack (2026)

https://docs.google.com/spreadsheets/d/12r03Uscybrj2PTc-H7bq7k3fD7GOcCmFVhsFbK5rwHA/edit?usp=sharing
1•vishakha041•14m ago•0 comments

No one is rating WAFs, so we are doing that

https://wafplanet.com/waf/
1•0xffeedd•19m ago•0 comments

Show HN: Agent Kernel – Three Markdown files that make any AI agent stateful

https://github.com/oguzbilgic/agent-kernel
2•obilgic•21m ago•0 comments

NUPA: Private post-scarcity engine with 99.999999% 100M Monte Carlo survival

https://github.com/bedardbrandon928/National-Unity-and-Prosperity-Act-NUPA
1•bedardbrandon89•22m ago•0 comments

I have solved the identity, trust, and memory hurdles with AI Agents

https://01ai.ai/
1•rjordangriggs•23m ago•1 comments

The fastest ForceAtlas2 graph layout for Python (300 stars) – fa2 v1.1

https://github.com/bhargavchippada/forceatlas2
1•turiyachips•25m ago•0 comments

George Hotz tells TiinyAI to cease and desist

https://twitter.com/__tinygrad__/status/2035296981850185792
2•shrikaranhanda•26m ago•0 comments

Synthetix AI

https://synthetix-ai.ch/
1•Jean-Baptiste_B•28m ago•0 comments

Why (lossy) self-improvement is real but it doesn't lead to fast takeoff

https://www.interconnects.ai/p/lossy-self-improvement
1•thoughtpeddler•28m ago•0 comments

CERN eggheads burn AI into silicon to stem data deluge

https://www.theregister.com/2026/03/22/cern_eggheads_burn_ai_into/
1•abdelhousni•28m ago•0 comments

Germany has a shortage of workers turns to India for help

https://www.bbc.com/news/articles/c3wlww83yv4o
2•holografix•29m ago•0 comments

How do you usually discover new developer tools?

1•Alen_P•31m ago•0 comments

The Shingles Virus May Be Aging You More Quickly

https://www.wired.com/story/shingles-virus-aging/
1•mooreds•32m ago•0 comments

Mapping the gap between emotional and logical decision analysis

https://medium.com/@aldenpeterson/mapping-the-gap-between-emotional-and-logical-decision-analysis...
1•mooreds•32m ago•0 comments

The Generative AI Policy Landscape in Open Source

https://redmonk.com/kholterhoff/2026/02/26/generative-ai-policy-landscape-in-open-source/
2•LaSombra•32m ago•0 comments

Show HN: AddFox – Build Better Browser Extensions for Developers and AI

https://addfox.dev
1•gxy5202•33m ago•0 comments

Google Patent: Sending Searchers to AI-Generated Pages over Your Site

https://www.seroundtable.com/google-patent-ai-generated-pages-search-41010.html
1•csomar•35m ago•0 comments