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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/

Larry Page officially moving out of California ahead of proposed billionaire tax

https://www.businessinsider.com/larry-page-leave-california-wealth-billionaire-tax-koop-google-20...
1•schmuckonwheels•1m ago•0 comments

Show HN: I built a remove bg API only $0.001/image

https://removebgapi.com
1•tamnv•2m ago•0 comments

Modern C++ Programming Course

https://github.com/federico-busato/Modern-CPP-Programming
1•signa11•4m ago•0 comments

AMD Just Showed Us What the Next Decade Looks Like

https://substack.com/inbox/post/183678804
1•rbanffy•6m ago•0 comments

Trump steals 50M barrels of oil from Venezuela

https://asiaviewnews.com/gigabots/Threads?p=100052
1•mark336•6m ago•0 comments

New York Television

https://nytv.live/
1•ChrisArchitect•6m ago•0 comments

On the criteria to be used in decomposing systems into modules (1972)

https://dl.acm.org/doi/epdf/10.1145/361598.361623
1•surprisetalk•8m ago•0 comments

I built an email tool that lands emails in user's inboxes – not spam

1•mddanishyusuf•19m ago•0 comments

Securing SSH Authentication with FIDO2 Security Keys

https://developers.yubico.com/SSH/Securing_SSH_with_FIDO2.html
1•Lwrless•22m ago•0 comments

Ask HN: Those making $500/month on side projects in 2026 – Show and tell

3•selmas58•27m ago•1 comments

How GitLab uses Postgres and ClickHouse to power their data stack?

https://clickhouse.com/blog/how-gitlab-uses-clickhouse-to-scale-analytical-workloads
1•saisrirampur•27m ago•0 comments

Getting my first 100 users with $0: what worked

https://amplift.ai/
2•our79511•29m ago•1 comments

Show HN: JSONBench, a Benchmark for Data Analytics on JSON

https://github.com/ClickHouse/JSONBench
1•saisrirampur•30m ago•0 comments

How 150 Minutes over Caracas Rewrote the Physics of Global Power

https://substack.com/inbox/post/183428226
1•SubiculumCode•30m ago•0 comments

Show HN: Interactive visualizations of PostgreSQL internals(MVCC, B-trees, etc.)

https://postgres-odyssey.lightslips.ai/
1•solo_leveller•30m ago•0 comments

Jellyfish sleep like humans – even though they don't have brains

https://www.nature.com/articles/d41586-026-00044-7
2•thunderbong•30m ago•0 comments

Claude Opus 4.5 vs. GLM-4.6

https://llm-stats.com/models/compare/claude-opus-4-5-20251101-vs-glm-4.6
1•behnamoh•31m ago•0 comments

XMPP and Metadata

https://blog.mathieui.net/xmpp-and-metadata.html
1•todsacerdoti•35m ago•0 comments

Siemens and Nvidia Expand Partnership to Build the Industrial AI OS

https://nvidianews.nvidia.com/news/siemens-and-nvidia-expand-partnership-industrial-ai-operating-...
2•mgh2•36m ago•0 comments

Show HN: Semantica – Open-source semantic layer and GraphRAG framework

https://github.com/Hawksight-AI/semantica
1•kaifahmad1•37m ago•1 comments

Why AI agents stall inside fast-moving teams

https://twitter.com/siddhxrth10/status/2008784631370498262
1•siddhxrth•41m ago•0 comments

Scientists Think They've Discovered How Humans Could Recover Lost Vision

https://www.popularmechanics.com/science/health/a69879804/mammal-ocular-restoration/
2•littlexsparkee•45m ago•0 comments

FDA to limit regulation of health and fitness wearables

https://www.reuters.com/business/healthcare-pharmaceuticals/us-fda-limit-regulation-health-fitnes...
2•phyzix5761•47m ago•0 comments

Debunking the AI food delivery hoax that fooled Reddit

https://www.platformer.news/fake-uber-eats-whisleblower-hoax-debunked/
1•Tomte•48m ago•0 comments

Senior Software Engineer, Back End or Full Stack

1•drewop•57m ago•0 comments

History of the Windshield Wiper

https://www.6thgearautomotive.com/2022/11/06/history-of-the-windshield-wiper-part-4-wiper-mechani...
1•nothrowaways•58m ago•0 comments

(US) Homeland Security uses Hiroshi Nagai's artwork without permission

https://twitter.com/hiroshipj/status/2007024205272150219
3•rguiscard•1h ago•0 comments

Show HN: AI tutor to study and practice STEM books

https://studyjunkie.co/
2•Gregoryy•1h ago•0 comments

Logitech Options+ and G Hub macOS Certificate Issue

https://support.logi.com/hc/en-us/articles/37493733117847-Options-and-G-HUB-macOS-Certificate-Issue
1•kbumsik•1h ago•0 comments

Canada's Immigration Dept shelves visa program for entrepreneurs, citing misuse

https://www.theglobeandmail.com/politics/article-ircc-halts-startup-visa-program-foreign-entrepre...
7•petethomas•1h ago•0 comments