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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Can Artists Help Shape American Cities Again?

https://www.nytimes.com/2026/02/11/arts/design/san-francisco-artist-city.html
1•mistersquid•55s ago•0 comments

OpenClaw Partners with VirusTotal for Skill Security

https://openclaw.ai/blog/virustotal-partnership
1•billinior•2m ago•0 comments

The Cost of a Function Call

https://lemire.me/blog/2026/02/08/the-cost-of-a-function-call/
2•ibobev•6m ago•0 comments

Dada: Moves and Mutation

https://smallcultfollowing.com/babysteps/blog/2026/02/10/dada-moves-and-mutation/
1•ibobev•7m ago•0 comments

Adventures in Neural Rendering

https://interplayoflight.wordpress.com/2026/02/10/adventures-in-neural-rendering/
1•ibobev•7m ago•0 comments

The quirky geology behind Olympic curling stones

https://www.scientificamerican.com/article/the-quirky-geology-behind-olympic-curling-stones/
1•sohkamyung•11m ago•0 comments

Show HN: SQLModel – open-source data modeling in the browser

https://github.com/sqlmodel/sqlmodel
2•Sean766•14m ago•0 comments

Show HN: Node/AWS Security Audit Agent Skill: static scans and actionable report

https://github.com/Grenguar/node-aws-security-audit
1•grenguar•14m ago•0 comments

The Agentic Code Problem

https://twitter.com/theo/status/2018091358251372601
1•zikero•15m ago•0 comments

Show HN: A live feed of commits authored by Claude Code across GitHub

https://claude-commits.vercel.app/
2•wonderfuly•16m ago•0 comments

Show HN: PolyMCP – Turn any Python function into AI-callable tools, instantly

1•justvugg•18m ago•0 comments

Show HN: Some of us are old enough to remember when Artificial Life was cool

https://www.tinybelligerentbugs.xyz/
1•philipfox•18m ago•0 comments

The New Laser That Can Take Down Aircraft

https://www.theatlantic.com/national-security/2026/02/ukraine-drones-lasers-iron-dome/685944/
1•breve•18m ago•0 comments

All flights at El Paso halted for 10 days for 'security reasons,' FAA says

https://www.nbcnews.com/news/us-news/flights-el-paso-airport-texas-halted-10-days-security-reason...
3•donohoe•19m ago•0 comments

The Torture Will Continue Until Shareholder Value Improves [video]

https://www.youtube.com/watch?v=NIXd3PEbsNk
5•senorqa•23m ago•0 comments

Mass Resignation from xAI

2•hargup•24m ago•0 comments

Cumbria hill could hide Viking grave of Ivarr the Boneless

https://www.bbc.com/news/articles/c8rm8g43x40o
1•1659447091•26m ago•0 comments

Stripe now allows agents to make payments

https://docs.stripe.com/payments/machine
1•mellosouls•26m ago•0 comments

Show HN: Seedancev2.ai – A simple Seedance v2.0 video generator

https://seedancev2.ai/
1•kelly99•27m ago•0 comments

Hyperscaler Spending to Hit over $600B

https://www.axios.com/2026/02/11/hyperscaler-spending-meta-microsoft-amazon-google
1•ironyman•28m ago•0 comments

The Pay-Per-Click Maximiser: the AI that's tearing the world apart

https://greggbayesbrown.substack.com/p/meet-the-pay-per-click-maximiser
2•superfluous_g•31m ago•1 comments

Gear Up Your MacBook: Accessories That Make a Difference (2026 Edition)

https://kirkstechtips.com/gear-up-your-macbook-accessories-that-actually-make-a-difference-2026-e...
2•dudexsnave•32m ago•1 comments

TikTok is tracking you, even if you don't use the app

https://www.bbc.com/future/article/20260210-tiktok-is-tracking-you-even-if-you-dont-use-the-app-h...
3•tmoravec•35m ago•1 comments

Show HN: ChatProjects Open-source WordPress plugin for document RAG and chat

https://github.com/chatprojects-com/chatprojects
1•morog•36m ago•0 comments

Show HN: Baby Vault – A 100% offline, privacy-first PWA for new parents

https://babyvault.moshmage.com/
1•moshmage•37m ago•1 comments

AI liability as the anchor of the human role

https://okossa.com/the-era-of-ai-liability-is-the-anchor-of-the-human-role-c55a11015765
2•okwe•38m ago•0 comments

StoreMind AI for Shopify

1•StoreMindAI•38m ago•0 comments

Show HN: Attestia – Financial truth layer for Web3 (TS, 1176 tests, 97% cov)

https://github.com/mcp-tool-shop-org/Attestia
1•mikeyfrilot•39m ago•0 comments

Michael Edward Ash

https://en.wikipedia.org/wiki/Michael_Edward_Ash
1•ZeljkoS•40m ago•0 comments

Blazorise 2.0 released, 3 years in the making

https://blazorise.com/news/release-notes/200
1•stsrki•40m ago•0 comments