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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Anthropic is joining the ConnectRPC project

https://github.com/connectrpc/connectrpc.com/pull/334
1•niyikiza•2m ago•0 comments

Systemd Introduces Birth Date Support for Upcoming Linux Desktop Age Controls

https://linuxiac.com/systemd-introduces-birth-date-support-for-upcoming-linux-desktop-age-controls/
2•akyuu•2m ago•0 comments

I Built an Autonomous AI Stock Market Analysis Platform (and What I Learned)

https://medium.com/@fireflydeals/how-i-built-an-autonomous-ai-stock-market-analysis-platform-and-...
1•pushp_shah•4m ago•0 comments

Design.md

https://stitch.withgoogle.com/docs/design-md/overview/
1•armcat•4m ago•0 comments

Show HN: Pitstop-check – finds the retry bug that turns 429s into request storms

1•SirBrenton•5m ago•0 comments

Steve Yegge Wants You to Stop Looking at Your Code – O'Reilly

https://www.oreilly.com/radar/steve-yegge-wants-you-to-stop-looking-at-your-code/
1•xbryanx•5m ago•0 comments

"Al has joined your family"

https://notes.npilk.com/al-has-joined-your-family
1•npilk•5m ago•0 comments

You Have Access to Almost Any Book

https://brianschrader.com/archive/you-have-access-to-almost-any-book/
1•sonicrocketman•6m ago•0 comments

Rethinking open source mentorship in the AI era

https://github.blog/open-source/maintainers/rethinking-open-source-mentorship-in-the-ai-era/
1•gmays•6m ago•0 comments

Open Letter: End the University of Edinburgh's Contract with OpenAI

https://docs.google.com/forms/d/e/1FAIpQLSdYyMMyQOdelZWm7RBApNfNT5a56ee_OkvVyQ2PdYibRjqbYQ/viewform
1•doener•6m ago•0 comments

Google is reportedly testing a Gemini app for Mac

https://www.engadget.com/ai/google-is-reportedly-testing-a-gemini-app-for-mac-203703372.html
3•babblingfish•10m ago•1 comments

Freemium vs. Free Trial

https://www.revturbine.com/resources/freemium-vs-free-trial
1•millereffect•10m ago•0 comments

The Trump administration's campaign to counter content bans in Europe

https://www.washingtonpost.com/technology/2026/03/20/trump-eu-dsa-censorship/
1•bryanrasmussen•11m ago•0 comments

Ask HN: FileZilla/WinSCP Speed Comparison

1•eahm•11m ago•0 comments

Show HN: I Built a MTA Subway Display So I'd Stop Checking My Phone

https://twitter.com/pirosb3/status/2034370959977619513
2•pirosb3•12m ago•0 comments

Tcl's German QLED ban puts pressure on TV brands to be more honest about QDs

https://arstechnica.com/gadgets/2026/03/tcls-german-qled-ban-puts-pressure-on-tv-brands-to-be-mor...
1•detaro•13m ago•0 comments

The Interface Is Content

https://borism.medium.com/the-interface-is-content-b13f4d693d66
1•felixbraun•13m ago•0 comments

What we heard about Rust's challenges, and how we can address them

https://blog.rust-lang.org/2026/03/20/rust-challenges.md/
1•emschwartz•13m ago•0 comments

More Americans Will Die Than Be Born in 2030 – Immigration Will Drive Growth

https://fortune.com/2026/01/07/cbo-outlook-population-decline-more-americans-will-die-than-be-bor...
1•karakoram•14m ago•0 comments

Show HN: Git-issues – AI agent-first task management for Git repos

https://github.com/steviee/git-issues
1•steviee•14m ago•0 comments

US startup advertises 'AI bully' role to test patience of leading chatbots

https://www.theguardian.com/technology/2026/mar/19/us-startup-advertises-ai-bully-role-to-test-pa...
1•Brajeshwar•15m ago•0 comments

Show HN: Libretto – Edit long recordings faster (a simpler Descript alternative)

https://libretto.fm
1•michael_y•15m ago•0 comments

Show HN: Qage.dev – Bug Reporting for Everyday Users

1•hunch_tan•16m ago•0 comments

The Tufte Test: Teaching an AI Agent to Make Better Data Visualizations

https://old.reddit.com/r/dataisbeautiful/comments/1rz0c94/the_tufte_test_teaching_an_ai_agent_to_...
1•rhiever•17m ago•1 comments

The Importance of Mathematics in Political Decision-Making

https://www.siam.org/publications/siam-news/articles/the-importance-of-mathematics-in-political-d...
3•teleforce•17m ago•0 comments

Roast My Skill

https://roast-my-skill.vercel.app/
2•sjmaplesec•17m ago•1 comments

Major phone carriers to launch 'Japan Roaming' for use in disasters

https://www.japantimes.co.jp/news/2026/03/20/japan/japan-roaming-service-disasters/
2•mikhael•18m ago•0 comments

EAV: An and Dangerous Anti-Pattern

https://www.milkadmin.org/article.php?id=10-eav
1•giuliopanda•18m ago•0 comments

Show HN: Cairn – Event-sourced reasoning graphs for AI memory

https://github.com/smcady/Cairn
1•smcady•21m ago•0 comments

Price Like a Winner

https://www.revturbine.com/resources/fastest-growing-saas-2025
2•millereffect•22m ago•0 comments