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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/

The Agentic Loop

https://hypnodrones.com/posts/agentic-loop/
1•hypnodrones•1m ago•0 comments

People Can Record Your iPhone Calls Without You Knowing

https://www.inc.com/fast-company-2/apple-people-record-your-iphone-calls-without-you-knowing/9134...
1•speckx•1m ago•0 comments

Cursor Cloud Agents Down

https://forum.cursor.com/t/cloud-agents-broken-ii/161036
1•mopatches•3m ago•1 comments

The Information Theory Behind Why AI Writing Sucks

https://www.pangram.com/blog/joe-stech-information-theory-why-ai-writing-sucks
1•mojoe•3m ago•0 comments

FileVault keys can't be escrowed in iCloud anymore

https://sixcolors.com/post/2026/05/filevault-keys-cant-be-escrowed-in-icloud-anymore/
1•alsetmusic•4m ago•0 comments

Prepopulated FS for PGlite

https://github.com/electric-sql/pglite/tree/main/packages/pglite-prepopulatedfs
1•tdrz•4m ago•0 comments

How I ported iWork 2015 to Mavericks in 11 hours

https://github.com/nfzerox/MavericksAppCompatibilityLayer/blob/main/JOURNEY.md
1•nfzerox•4m ago•0 comments

How Accurate Are Google's A.I. Overviews?

https://www.nytimes.com/2026/04/07/technology/google-ai-overviews-accuracy.html
1•1vuio0pswjnm7•6m ago•1 comments

Ask HN: Are advances in AI going to push Linux to a micro-kernel?

1•cayleyh•7m ago•0 comments

Freezing Your Cake

https://taylor.town/20260518
1•surprisetalk•9m ago•0 comments

OpenAI co-founder Andrej Karpathy joins Anthropic

https://www.axios.com/2026/05/19/anthropic-openai-karpathy-andrej-claude
2•swolpers•10m ago•0 comments

Show HN: Website Performance Scanner Specifically for WordPress

https://scan.gethyperpress.com/
1•gillytech•11m ago•0 comments

Gaussian Splatting for Dummies

https://darshanmakwana412.github.io/2026/04/gaussian-splatting/
1•martianvoid•11m ago•0 comments

Open Source OTEL Observability Platform

https://github.com/Makisuo/maple
1•Makisuoo•14m ago•1 comments

Gemini 3.5 Flash

https://twitter.com/GoogleDeepMind/status/2056787990110994511
5•heydenberk•14m ago•1 comments

CopyFail: From Pod to Host

https://xint.io/blog/copy-fail-pod-to-host
1•tptacek•14m ago•0 comments

CrustAI – Self-Hosted AI for Telegram/WhatsApp/Discord via Ollama, Zero Cloud

https://crustaidocs.netlify.app/
1•DaveHN_2026•16m ago•1 comments

A prize-winning story published in Granta was (likely) written by AI

https://lithub.com/a-prize-winning-story-published-in-granta-was-very-likely-written-by-ai/
1•pseudolus•17m ago•0 comments

AI, "Humanity", and Dr. Manhattan Syndrome: A Communications Intervention

https://www.personfamiliar.com/p/ai-humanity-and-dr-manhattan-syndrome
1•stalfosknight•17m ago•0 comments

Gemini Omni Gemini Omni Flash is rolling out starting today

https://twitter.com/Google/status/2056787158728597620
1•heydenberk•18m ago•0 comments

LLMs adapt 24.9% under observation – safety evals are always observed

https://the-mind-of-ai.com/posts/the-relay-room-is-still-running/https://the-mind-of-ai.com/posts...
2•agentic-wiki•19m ago•1 comments

Year-Old PHP Vulnerability Is One of the Most Targeted Vulnerabilities

https://www.vulncheck.com/blog/cve-2017-9841
1•speckx•19m ago•0 comments

Stack and Scale: The Upcoming Podcast for Senior Devs Who Want More

https://open.spotify.com/show/033icDD83IyljtIWGd1ioD
1•lucyb0207•19m ago•1 comments

Show HN: Crisper – On-device voice to polished text for macOS

https://www.speakcrisper.com/
1•gokulnair2001•22m ago•1 comments

Kremlin Tunnels: The Secret of Moscow's Underworld (1989)

https://www.latimes.com/archives/la-xpm-1989-06-28-mn-4159-story.html
1•jxub•22m ago•0 comments

NGI Forge 0.1 Released

https://discourse.nixos.org/t/nix-ngi-ngi-forge-0-1-released/77213
1•coldsunrays•23m ago•0 comments

'Comically bad' datasets used to train clinical models for stroke and diabetes

https://retractionwatch.com/2026/05/18/kaggle-dataset-clinical-models-stroke-diabetes/
4•leephillips•23m ago•0 comments

We were trying to Terraform Mars but instead we saved the sea snails

https://erikaaldendeb.substack.com/p/we-were-trying-to-terraform-mars
2•grantbel•23m ago•0 comments

The Gateway Is Dead. The Endpoint Is the New AI Control Plane

https://justindsouza.substack.com/p/introducing-beacon-endpoint-telemetry
1•jqdsouza•24m ago•0 comments

Single-Serving Friends

https://rickyyean.com/2019/11/01/single-serving-friends/
1•rickyyean•24m ago•0 comments