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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

CoreWeave slides as surging capex, backlog risks overshadow small revenue beat

https://www.reuters.com/business/coreweave-beats-fourth-quarter-revenue-estimates-2026-02-26/
1•petethomas•5m ago•0 comments

Indian ISPs block Supabase due to a ministry order

https://twitter.com/supabase/status/2027249469545386102
1•alt-glitch•5m ago•0 comments

Google paid startup Form Energy $1B for its 30GWh, 100-hour battery

https://techcrunch.com/2026/02/26/google-paid-startup-form-energy-1b-for-its-massive-100-hour-bat...
1•epistasis•10m ago•0 comments

I stopped writing code. I only review AI-generated PRs now

https://alec.is/posts/how-i-went-from-code-reviewer-to-code-reviewer/
1•arm32•11m ago•0 comments

'Really Simple Licensing' (RSL) – Open Licensing Standard for AI Crawlers

https://en.wikipedia.org/wiki/Really_Simple_Licensing
1•evolve2k•29m ago•1 comments

The AI Transformation Framework

https://zapier.com/playbooks/ai-transformation-framework
1•swolpers•31m ago•0 comments

Shifting Security Left for AI Agents with GitGuardian MCP

https://blog.gitguardian.com/shifting-security-left-for-ai-agents-enforcing-ai-generated-code-sec...
1•umairnadeem123•31m ago•0 comments

Feature-Sliced Design

https://feature-sliced.design/
1•saikatsg•32m ago•0 comments

High Speed Rail by Country 2026

https://worldpopulationreview.com/country-rankings/high-speed-rail-by-country
2•thunderbong•34m ago•0 comments

Trend Is Concerning

https://techcrunch.com/2026/02/26/jack-dorsey-block-layoffs-4000-halved-employees-your-company-is...
1•melvinodsa•35m ago•0 comments

Show HN: I built a Chrome extension to record demo videos without editing

https://zoomflow.rovelin.com/
1•hritik7742•41m ago•0 comments

Judge says he will order Greenpeace to pay $345M in oil pipeline case

https://apnews.com/article/greenpeace-energy-transfer-dakota-access-pipeline-30bfb9939dea06f1e976...
4•e2e4•48m ago•1 comments

Model Collapse Ends AI Hype

https://www.youtube.com/watch?v=ShusuVq32hc
3•signa11•50m ago•0 comments

Research suggests mating direction bias between Neanderthals and humans

https://www.theguardian.com/science/2026/feb/26/male-neanderthals-human-females-mating-research-d...
3•uxhacker•50m ago•1 comments

Seeing Is Not Believing: Benchmarking AI Image Detectors

https://blog.succinct.xyz/ai-image-detection-benchmark/
1•ncb9094•51m ago•0 comments

Pakistan bombs targets in Afghan cities, minister calls it 'open war'

https://www.reuters.com/world/asia-pacific/pakistan-strikes-afghanistan-targets-clashes-intensify...
3•petethomas•52m ago•0 comments

How Stupid Would It Be to Put Data Centers in Space?

https://spectrum.ieee.org/orbital-data-centers
2•amaks•54m ago•1 comments

Upload 23andMe,myHeritage, Myancestry, get 1,200 GRS score and a longevity prot

1•HelixSequencing•56m ago•0 comments

Dear Time Lords: Freeze Computers in 1993

https://graydon2.dreamwidth.org/322461.html
6•zdw•1h ago•0 comments

Reduce Claude Token Usage by 50%

https://ham-pro.vercel.app/
2•Luseniik•1h ago•1 comments

Making Video Games in 2025 (without an engine)

https://www.noelberry.ca/posts/making_games_in_2025/
2•alvivar•1h ago•0 comments

How do you evaluate a person's ability to use AI?

3•imwoody•1h ago•1 comments

Secure-Massively-Multiplayer-Snake

https://eieio.games/blog/secure-massively-multiplayer-snake/
2•colinprince•1h ago•0 comments

Claude-search – grep, resume your Claude Code session history from the CLI

https://github.com/pi-netizen/claude-search
2•pi-netizen•1h ago•1 comments

Under Secretary of Defense Emil Michael Response to Dario Amodei

https://xcancel.com/uswremichael/status/2027211708201058578?s=12
4•grej•1h ago•2 comments

Green Eggs and HAM (Hierarchical Agent Memory)

https://github.com/kromahlusenii-ops/ham
3•Luseniik•1h ago•1 comments

Energym: Move the World

https://www.aicandy.be/giorgio-1
2•zdw•1h ago•0 comments

Tonka beans are illegal in the US

https://www.bbc.com/future/article/20170620-the-delicious-flavour-with-a-toxic-secret
5•valzevul•1h ago•0 comments

OpenClaw Hype: Analysis of Chatter from the Dark Web (BleepingComputer)

https://www.bleepingcomputer.com/news/security/the-openclaw-hype-analysis-of-chatter-from-open-so...
2•ildar•1h ago•0 comments

Any Website Can Take Full Control of Your OpenClaw Agent (Oasis)

https://www.oasis.security/blog/openclaw-vulnerability
1•ildar•1h ago•0 comments