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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/

14,000 crypto holders face security risk after Trezor data breach

https://www.ft.com/content/a91356ef-67bd-4bd9-947b-b272423f1318
2•petethomas•1m ago•0 comments

HoneyMatcha – A coordination platform for you and your personal agent

https://honeymatcha.io/
1•JaiRathore•2m ago•0 comments

Using AI chatbots? Here are four ways to reduce the energy drain

https://knowablemagazine.org/content/article/food-environment/2026/four-ways-to-reduce-energy-use...
1•knowablemag•4m ago•0 comments

Fibermaxxing? Your microbes (and your health) say thanks

https://knowablemagazine.org/content/article/health-disease/2026/fiber-feeds-the-microbiome-and-i...
1•knowablemag•5m ago•0 comments

What can we learn from Australia's social media ban for teens?

https://knowablemagazine.org/content/article/society/2026/studying-the-social-media-ban-under-six...
1•knowablemag•5m ago•0 comments

AI Looms over Software Companies – and the Investors Who Piled into Them

https://www.bloomberg.com/graphics/2026-ai-private-equity-software/
1•petethomas•8m ago•0 comments

Show HN: MCP-stama – An ultra-fast Rust MCP server with no dependencies

https://github.com/StamManif/mcp-stama
4•stammanif•8m ago•0 comments

OpenAI's Revenue Run Rate Tops $40B Ahead of IPO

https://www.bloomberg.com/news/articles/2026-08-13/openai-s-revenue-run-rate-tops-40-billion-ahea...
2•mfiguiere•8m ago•1 comments

The End of Mathematics

https://www.daniellitt.com/blog/2026/8/11/the-end-of-mathematics
1•rzk•8m ago•0 comments

US sells 30-year bonds at highest borrowing costs since 2001

https://www.ft.com/content/9c9c948f-dc8b-4385-a9b9-4b98dc1eadd9
3•petethomas•10m ago•0 comments

ParleHub – Enterprise AI Collaboration and Cost Control – Launch Today on PH

https://parlehub.com/
1•ciaranodonnell•11m ago•0 comments

Ask HN: Does Codex's Computer History plugin seem like a misstep to anyone else?

1•joshcsimmons•21m ago•0 comments

The magic of a two-year waitlist

https://seths.blog/2026/08/the-magic-of-a-two-year-waitlist/
1•herbertl•21m ago•0 comments

Chief Revenue Officer for OpenAI Resigns

https://twitter.com/Kr00ney/status/2087946389351284777
1•slowin•22m ago•1 comments

AI #181: Astra Goes Cyber Critical

https://thezvi.substack.com/p/ai-181-astra-goes-cyber-critical
1•paulpauper•22m ago•0 comments

My skinner box It was made for me

https://sgt.hootr.club/blog/this-is-my-skinner-box/
1•steinuil•22m ago•0 comments

Black Wednesday

https://ussri.substack.com/p/black-wednesday
1•paulpauper•23m ago•0 comments

Book Review: The Infinity Machine

https://millicosm.substack.com/p/book-review-the-infinity-machine
1•paulpauper•23m ago•0 comments

The Largest Galaxy in the Universe Is Even Bigger Than We Thought

https://www.iflscience.com/the-largest-galaxy-in-the-universe-is-even-bigger-than-we-thought-and-...
1•gmays•23m ago•0 comments

36 Ways to Send a File

https://getcroc.com/blog/compare-file-transfer-tools
1•gregsadetsky•24m ago•0 comments

'Papers and patents are becoming less disruptive over time'?

https://bsky.app/profile/vincentholst.bsky.social/post/3msxg77pnmk2r
1•doener•25m ago•0 comments

Show HN: Mirage Browser, the deadest of internets. ~1000 tok/s 1998 internet

https://miragebrowser.xyz/
2•KCLock•27m ago•0 comments

I Build Production Software by Directing AI

https://medium.com/@chrissharp80/how-i-build-production-software-by-directing-ai-710902b4933e
2•chrissharp80•27m ago•0 comments

Data Science Weekly – Issue 664

https://datascienceweekly.substack.com/p/data-science-weekly-issue-664
1•sebg•28m ago•0 comments

Is this hack-back or cyber letters-of-marque? No, but maybe

https://cybersect.substack.com/p/is-this-hack-back-or-cyber-letters
3•wmf•31m ago•0 comments

Chatbots are doing the work of Congress with little oversight

https://www.washingtonpost.com/politics/2026/08/13/chatbots-are-doing-work-congress-with-little-o...
1•harambae•31m ago•0 comments

Number of malaria attacks since birth: A longitudinal study of African children

https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(23)00556-4/fulltext
2•alphabetatango•32m ago•0 comments

StudioCreate+

https://apps.microsoft.com/detail/9p69ncw3mfj6?hl=en-US&gl=US
1•detyea•32m ago•0 comments

Chestnut – eGPU dock with open-source firmware

https://hwbusters.com/news/comma-ai-egpu-dock-runs-open-source-firmware-249-bare-799-with-an-rx-9...
4•txrx0000•33m ago•0 comments

Agentic Scheduling = Apple Calendar + Apple Reminders + Claude Agent

https://github.com/hunterZh37/agentic-scheduling
1•hunterzh37•33m ago•0 comments