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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/

Giant Virginia Data Center Project Upended by Clerical Error

https://www.bloomberg.com/news/articles/2026-05-08/giant-data-center-project-in-virginia-upended-...
1•1vuio0pswjnm7•3m ago•0 comments

NYC School District Hit by Malware Attack as Well as Canvas Hack

https://www.bloomberg.com/news/articles/2026-05-08/canvas-hack-on-nyc-schools-comes-amid-separate...
1•1vuio0pswjnm7•4m ago•0 comments

Student hackers revenge on final exams 'ShinyHunters' attacks nearly 9k schools

https://fortune.com/2026/05/08/student-hackers-get-revenge-on-final-exams-as-shinyhunters-takes-d...
1•1vuio0pswjnm7•9m ago•0 comments

Aurora: A Leverage-Aware Optimizer for Rectangular Matrices

https://blog.tilderesearch.com/blog/aurora
1•matt_d•21m ago•0 comments

What is Elon Musk's formula

https://www.economist.com/culture/2026/05/07/what-is-elon-musks-formula
1•andsoitis•25m ago•0 comments

Hantavirus tracker with Pandemic 2's UI

https://hantavirus.xetera.dev/
1•xetera•26m ago•0 comments

Atlas Mehs

https://darthcoder.github.io/2026/05/10/atlas-mehs/
1•basyt•40m ago•1 comments

The Title on Your Badge Is Becoming a Guess

https://priorcontext.substack.com/p/the-title-on-your-badge-is-becoming
2•contextwindow•43m ago•1 comments

Arrow Flight vs. JSON in Next.js: Benchmarking Python and Go

https://kayhan.dev/posts/012-arrow-flight-vs-json-nextjs-snowflake-benchmark/
1•keynha•48m ago•0 comments

The Hidden Reason Screwdriver Handles Look Like This [video]

https://www.youtube.com/watch?v=sGiRSA_GWK8
2•CharlesW•48m ago•0 comments

Global AI Diffusion Q1 2026 Trends and Insights

https://www.microsoft.com/en-us/corporate-responsibility/dmc/topics/ai-economy-institute/reports/...
2•igor_mart•54m ago•2 comments

Grinder12: 0.96-Bit Lossless Streaming KV-Cache (16.55x VRAM Savings

https://github.com/ggml-org/llama.cpp/discussions/22891
3•AMICLLC•1h ago•0 comments

Xs of Y – roguelike that names itself every run. Written in 4kLoC

https://github.com/nooga/xsofy
4•andsoitis•1h ago•0 comments

Gemini API File Search is now multimodal

https://blog.google/innovation-and-ai/technology/developers-tools/expanded-gemini-api-file-search...
20•gmays•1h ago•2 comments

Snyk and Claude Code: real-time security scanning of AI-generated code

https://codebrainery.com/articles/snyk-claude-code-real-time-security-scanning-for-ai-code
4•yogeshbansal•1h ago•0 comments

Dissolving atherosclerotic plaque without surgery

https://www.cureus.com/articles/488870-closed-loop-extracorporeal-vascular-cleaning-by-staged-che...
3•iliatoli•1h ago•0 comments

Show HN: Modafinil - Let agents continue running while MacBook lid is closed

https://github.com/narcotic-sh/modafinil
3•hamza_q_•1h ago•2 comments

"genesis mission (US Government)" (Angela Collier on AI and research) [video]

https://www.youtube.com/watch?v=p6Ejmhwb8Sc
2•eqvinox•1h ago•0 comments

MCP for sandboxed, reproducible envs for agentic-first coding workflows

https://github.com/aniongithub/devcontainer-mcp
3•anionyt•1h ago•0 comments

Flipping the bozo bit on flips the learning off

https://surfingcomplexity.blog/2026/05/09/flipping-the-bozo-bit-on-flips-the-learning-off/
4•eatonphil•1h ago•0 comments

Powering the Inference Era: Inside the DigitalOcean AI-Native Cloud

https://www.digitalocean.com/blog/powering-the-inference-era
2•gmays•1h ago•0 comments

The Laboratory and the Artist

https://clereviewofbooks.com/the-laboratory-and-the-artist/
4•skogstokig•1h ago•0 comments

Memory device breaks high-temperature performance record

https://physicsworld.com/a/memory-device-breaks-high-temperature-performance-record/
4•EA-3167•1h ago•1 comments

How Israel's creation mirrors Greek independence – and why it's overlooked

https://www.jpost.com/opinion/article-895285
6•dima1830•1h ago•2 comments

DOS, Floppies, NetBSD and Nostalgia

https://exquisite.tube/w/dkV6kWiT9sp2y6xVwkH1iF
2•jaypatelani•1h ago•0 comments

Show HN: A Satellite Visualizer

https://github.com/aabiji/kepler
2•aabiji•1h ago•0 comments

Pocket Raspberry Pi Computer for Hackers [Pre-Sale]

https://shop.m5stack.com/pages/m5-cardputerzero
3•daniel_iversen•1h ago•0 comments

Show HN: Fixing AI memory blind spot on connected facts with benchmark

https://yourmemoryai.xyz/
4•SachitRafa•1h ago•0 comments

Plant Seeds Do Something When the Sound of Rain Strikes

https://www.sciencealert.com/plants-can-sense-the-sound-of-rain
2•m463•1h ago•0 comments

Show HN: Building a web server in assembly to give my life (a lack of) meaning

https://github.com/imtomt/ymawky
89•imtomt•1h ago•28 comments