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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Jankó Keyboard

https://en.wikipedia.org/wiki/Jank%C3%B3_keyboard
1•athrow•12s ago•0 comments

Manufacturing qubits that can move

https://arstechnica.com/science/2026/05/manufacturing-qubits-that-can-move/
1•Brajeshwar•36s ago•0 comments

Our side project: cyber-research-AI IDE, writing an exploit for CVE-2026-23918 [video]

https://www.youtube.com/watch?v=szddOzKB-BM
1•xphilter•54s ago•1 comments

Britain Learned and Unlearned Nuclear

https://worksinprogress.co/issue/how-the-uk-learned-and-unlearned-nuclear/
1•nickt•4m ago•0 comments

J2G – Convert Jenkinsfiles to GitLab CI (.gitlab-ci.yml), offline

https://nexwright.com/projects/j2g/
2•justnoone•5m ago•0 comments

Nature's hardware store: building the future with biology [video]

https://aeon.co/videos/fungi-homes-and-more-ways-biology-could-sustain-life-beyond-earth
1•the-mitr•6m ago•0 comments

Novo Navis Intelligence Sobers Up the AI Community

https://news.novonavis.com/news/intel_090526_3827
1•capagg•10m ago•0 comments

Show HN: AaaS – Agent as a Service

https://github.com/Tem-Degu/streetai-aaas
1•degutemesgen•11m ago•1 comments

Cambridge University Raises Money to Help the Homeless in Cambridge

https://www.justgiving.com/page/fundrace-cai
1•SamCoding•11m ago•0 comments

The FCC Wants Your ID Before You Get a Phone Number

https://reclaimthenet.org/the-fcc-wants-your-id-before-you-get-a-phone-number
3•delichon•15m ago•0 comments

Wanted: A new tech-industry writer for The Economist

https://www.economist.com/business/2026/05/06/wanted-a-new-tech-industry-writer
2•andsoitis•17m ago•0 comments

Refineshot: Rethink Cinematography with Foundational Skill Evaluation

https://www.techrxiv.org/doi/full/10.36227/techrxiv.176107519.98547757/v1
2•bryanrasmussen•21m ago•1 comments

GrapheneOS fixes Android VPN leak Google refused to patch

https://cyberinsider.com/grapheneos-fixes-android-vpn-leak-google-refused-to-patch/
4•Georgelemental•22m ago•0 comments

AWS to also block ipcomp and xfrm modules in DirtyFrag mitigation

https://aws.amazon.com/security/security-bulletins/rss/2026-027-aws/
1•kro•24m ago•1 comments

Rtwatch: Watch videos with friends using WebRTC

https://github.com/pion/rtwatch
1•nateb2022•24m ago•0 comments

Canvas Data Breach; DeepSeek V4 Flash Boosts LLM Inference 4.3x

https://presciente.com/edition/77
2•sebastianperezr•25m ago•0 comments

I am the best lightsaber fighter in Europe

https://www.theguardian.com/lifeandstyle/2026/may/08/experience-i-am-the-best-lightsaber-fighter-...
3•tagawa•28m ago•1 comments

Self-Fulfilling Misalignment Data Might Be Poisoning Our AI Models (2025)

https://turntrout.com/self-fulfilling-misalignment
1•herbertl•30m ago•0 comments

It Was a Good Quarter for "Other Income" [A16Z Charts on AI Growth]

https://www.a16z.news/p/charts-of-the-week-it-was-a-good
1•alecco•30m ago•1 comments

Callbacks in C++ using template functors (Rich Hickey, 1996)

https://dl.acm.org/doi/10.5555/260627.260756
1•tosh•31m ago•0 comments

Show HN: Mochi.js: bun-native high-fidelity browser automation library

https://mochijs.com/
1•ccheshirecat•32m ago•0 comments

Frontier Airlines plane hits person on runway during takeoff at Denver airport

https://www.theguardian.com/us-news/2026/may/09/frontier-airlines-plane-hits-pedestrian-denver
2•manarth•33m ago•0 comments

Running Codex Safely at OpenAI

https://openai.com/index/running-codex-safely/
2•Brajeshwar•36m ago•0 comments

Marrying for power: Gendered alliances in mafias

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0345859
1•defrost•37m ago•0 comments

Meta can read your Instagram DMs starting Friday

https://www.fox32chicago.com/news/meta-can-read-your-instagram-dms-starting-friday-one-step-could...
1•mgh2•38m ago•0 comments

GameStop CEO Trying to Buy eBay Says He Was Banned from eBay

https://www.gamespot.com/articles/gamestop-ceo-selling-gamestop-stuff-on-ebay-to-fund-buyout-of-e...
3•croes•39m ago•0 comments

What the Naysayers of Vibe Coding Are Getting Wrong

https://scrollinondubs.substack.com/p/what-the-naysayers-of-vibe-coding
1•scrollinondubs•40m ago•2 comments

Working with Cowork: Claude Desktop Is Three Apps Pretending to Be One

https://age-of-product.com/claude-desktop/
1•swolpers•41m ago•0 comments

Punic people were genetically diverse with almost no Levantine ancestors

https://www.nature.com/articles/s41586-025-08913-3
2•janandonly•44m ago•0 comments

The Intolerable Hypocrisy of Cyberlibertarianism

https://matduggan.com/the-intolerable-hypocrisy-of-cyberlibertarianism/
3•ColinWright•45m ago•1 comments