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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Bucketing optimization in SQL to deal with skewed data (BigQuery example)

https://smallbigdata.substack.com/p/bucketing-optimization-in-sql-to
1•tosh•1m ago•0 comments

What Was the Metaverse?

https://www.fastcompany.com/91467599/metaverse-zuckerberg-facebook-ai
1•agluszak•2m ago•0 comments

Building an agentic memory system for GitHub Copilot

https://github.blog/ai-and-ml/github-copilot/building-an-agentic-memory-system-for-github-copilot/
1•agluszak•2m ago•0 comments

World's Safest Airline Rankings for 2026

https://www.airlineratings.com/articles/worlds-safest-airlines-for-2026
2•austinallegro•4m ago•0 comments

Show HN: Native PyAnnote (speaker diarizer) in Rust

https://github.com/RustedBytes/pyannote-rs
1•yehors•5m ago•0 comments

Show HN: Automated tech news site with custom multi-LLM agent pipelines

https://wayr.today/how-it-works/
1•siddkgn•6m ago•1 comments

Just the Browser

https://justthebrowser.com/
2•cl3misch•7m ago•0 comments

McClatchy Media accuses Google in federal court of monopolizing online ad sales

https://www.miamiherald.com/news/business/article314325407.html
2•giuliomagnifico•8m ago•0 comments

Feldera's Visual Profiler

https://www.feldera.com/blog/introducing-feldera%27s-visual-profiler
2•lsuresh•14m ago•0 comments

UN treaty to protect 'extraordinary' marine life due to come into force

https://www.aljazeera.com/news/2026/1/16/un-treaty-to-protect-extraordinary-marine-life-due-to-co...
1•Qem•14m ago•0 comments

Show HN: Recursive Language Model for Querying Human Action by Ludwig von Mises

https://github.com/mateolafalce/human-action-rlm
1•lafalce•14m ago•0 comments

How Civilizations Fall: A Theory of Catabolic Collapse (2005) [pdf]

https://www.ecoshock.org/transcripts/greer_on_collapse.pdf
2•ColPanic•14m ago•1 comments

Simple data management for new prototypes

1•AndreyK1984•15m ago•0 comments

Show HN: HN Reader with Favorites, Read-Later and Open Source

https://hn-pb-next.mystack.host/en
1•lavren1974•16m ago•0 comments

Beyond Senior: Consider the staff path

https://hawksley.org/2026/01/14/beyond-senior.html
1•taubek•17m ago•0 comments

I created a game engine for Django?

https://en.andros.dev/blog/6e9e4485/i-created-a-game-engine-for-django/
1•andros•18m ago•0 comments

Tell HN: YouTube gave my username Switzerland to a half government organization

3•faebi•20m ago•0 comments

The Spectrum Between AI Agents and Workflows

https://www.webguideplus.com/2026/01/ai-agents-vs-workflows-why-llm-agents.html
1•Traumen•21m ago•1 comments

Show HN: Quint Visualizer – A GraphViz-like visualizer for Quint traces

https://quint-visualizer.noghartt.dev/
1•Noghartt•28m ago•0 comments

Pystage – Scratch-like Python programming

https://github.com/pystage/pystage
1•rahimnathwani•28m ago•0 comments

Does AI help us care less?

http://agileotter.blogspot.com/2026/01/does-ai-help-us-care-less.html
4•ingve•30m ago•0 comments

Ask HN: Why are we building RAG internally when its ideal for 3rd Party or SaaS?

2•bluegatty•32m ago•0 comments

An easy way to sync Claude Code configs across machines

https://github.com/MikeVeerman/jean-claude
2•MikeVeerman•32m ago•0 comments

Show HN: Accordio, AI contracts and payments for freelancers

https://www.accordio.ai/
3•deduxer•33m ago•3 comments

Signal creator Moxie Marlinspike wants to do for AI what he did for messaging

https://arstechnica.com/security/2026/01/signal-creator-moxie-marlinspike-wants-to-do-for-ai-what...
5•aarghh•34m ago•0 comments

Show HN: Investor asks "what did engineering ship?"

2•inferno22•36m ago•0 comments

Ask HN: Are all those prominent people still saying "AI will end humanity"?

1•wewewedxfgdf•41m ago•0 comments

The Companion for Your Heartopia Adventure Is Here

https://heartopiagame.org/
1•candseven•42m ago•1 comments

Show HN: Linkshor.tr – free, ad-free, anonymous link shornener with API support

https://linkshor.tr/
1•avdept•42m ago•0 comments

China and Canada announce tariffs relief after meeting between Carney and Xi

https://www.bbc.com/news/articles/cy59pvkqvl5o
6•breve•43m ago•2 comments