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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/

1•Hardinai•13s ago

Australia's 7 best-selling EVs are now all Chinese – even Tesla's

https://electrek.co/2026/07/10/australia-top-7-evs-all-chinese/
1•breve•32s ago•0 comments

Green is a Clojure library for building idempotent DevOps CLIs

https://github.com/amiorin/green
1•amiorin•2m ago•0 comments

Missouri declares state of emergency after life-threatening flash floods [video]

https://www.youtube.com/watch?v=yzx-XelvnMg
1•Bender•3m ago•0 comments

Red is a TypeScript/Bun library for building idempotent DevOps CLIs

https://github.com/amiorin/red
1•amiorin•3m ago•0 comments

Show HN: I made Claude explain like I'm 5, and AI fatigue disappeared

https://github.com/amebahead/explain-like-iam-five-rules
1•amebahead•5m ago•0 comments

OpenAI and Google sell AI models to blacklisted China groups

https://www.ft.com/content/5d6aafa1-5d47-4585-aa95-6ec06a6cd20f
2•1vuio0pswjnm7•7m ago•0 comments

Show HN: Rilavek – Stream FTP/SFTP/TUS uploads straight to S3, no disk buffer

https://rilavek.com
1•rilavek•12m ago•0 comments

DeepSeek-AI/DeepSeek-v3.2

https://huggingbay.xyz/artifact/hf-model-deepseek-ai-deepseek-v3-2
1•ASHOKGOUDK•12m ago•0 comments

Yiddish resource for elements of chaldean neo-aramaic and Biblical aramaic (1911

https://archive.org/details/nybc211294
1•marysminefnuf•12m ago•0 comments

Gilbert Strang Joins Anthropic

https://twitter.com/GilStrangMIT/status/2075666580990464489
1•elzed•13m ago•0 comments

Parsoid

https://www.mediawiki.org/wiki/Parsoid
2•debo_•15m ago•0 comments

What Every Python Developer Should Know About the CPython ABI

https://labs.quansight.org/blog/python-abi-abi3t
1•signa11•16m ago•0 comments

Show HN: Schedule tasks for your AI agents from Google Calendar

https://agentcaly.com/
2•matt413•19m ago•0 comments

Discord Goes Ban-Happy, Suspends People for Benign Images

https://gizmodo.com/discord-goes-ban-happy-suspends-people-for-benign-images-2000782587
1•gnabgib•19m ago•0 comments

Disappearing Polymorph

https://en.wikipedia.org/wiki/Disappearing_polymorph
1•moralestapia•20m ago•0 comments

Tripplet

https://www.tripplet.lol/
1•notnurb•22m ago•0 comments

User provider content is dangerous. Our experience

https://blast-radius.boomurl.me/
1•dorongrinstein•25m ago•1 comments

Shih Tzu History: From Royal Dogs to Beloved Companions

https://www.akc.org/expert-advice/dog-breeds/shih-tzu-history/
1•thunderbong•26m ago•0 comments

Show HN: I built a cold email platform with built-in inbox placement testing

https://spamcipher.com/
1•mainmin8t•27m ago•0 comments

Lite and Text Only News and Other Websites

https://bmk.neocities.org/
1•Bender•29m ago•0 comments

Show HN: Quantum-audit – CLI to scan NPM deps for quantum-vulnerable crypto

https://quantum-audit-site.vercel.app
1•Heavensinfinite•37m ago•0 comments

Meta found to breach EU laws with 'addictive' Instagram, Facebook designs

https://www.cnbc.com/2026/07/10/meta-instagram-facebook-addictive-design-breach-eu-laws.html
2•1vuio0pswjnm7•38m ago•0 comments

The Company That Owns AOL Gets a Million Job Applications–and Rejects 99.9%

https://www.wsj.com/business/bending-spoons-jobs-hiring-stock-eaed2b8e
1•JumpCrisscross•39m ago•2 comments

MDN has a page that shows every web API update as it hits each browser

https://developer.mozilla.org/en-US/plus/updates
5•luispa•50m ago•0 comments

Overview of 2026 wrench (physical) attacks on crypto holders

https://www.certik.com/blog/2026-wrench-attacks-overview
2•decimalenough•52m ago•0 comments

NYT article on opening of dachau (1933)

https://www.nytimes.com/1933/07/27/archives/nazi-prison-camps-to-be-permanent-building-going-on-a...
3•marysminefnuf•54m ago•0 comments

Scutoid Papercraft

https://www.patreon.com/vihart/posts/scutoid-and-111945080
2•ry-gr•55m ago•0 comments

Using a Vision Pro to help install a POE doorbell

https://old.reddit.com/r/Ubiquiti/comments/1ut1atj/how_i_retrofit_poe_doorbells/
2•js2•57m ago•1 comments

I've been building this alone for months. Roast it before I lose any more time

https://peakd.io
2•GroguMaster•1h ago•0 comments