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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/

Pine64 launch $50 smart speaker for Home Assistant tinkerers

https://www.omgubuntu.co.uk/2026/06/pine64-pinevoice-riscv-smart-speaker-launch
1•edward•17s ago•0 comments

Apple accelerates app development with new intelligence frameworks

https://www.apple.com/in/newsroom/2026/06/apple-aids-app-development-with-new-intelligence-framew...
1•adithyaharish•1m ago•0 comments

Trap–Bath Split

https://en.wikipedia.org/wiki/Trap%E2%80%93bath_split
1•YeGoblynQueenne•1m ago•0 comments

I built a native iOS video player for local media and SMB/Plex

https://apps.apple.com/us/app/lux-video-player-hd-media/id6762520464
1•Moonarkh•8m ago•0 comments

AI Engineering Roadmap

https://aiengineeringfromscratch.com/prereqs.html
1•rohitghumare•8m ago•0 comments

Using a local iPhone MCP server to plan Apple Watch workouts with Codex

https://bernhardhering.de/blog/ask-my-health-codex-workout-plan/
1•boernei•11m ago•0 comments

AI Agent vs. Cron

1•vasanthps•11m ago•0 comments

Show HN: LokalBot – meetings, notes, and autocomplete that never leave your Mac

https://www.lokalbot.com/
1•stevyhacker•11m ago•0 comments

GLM-5.2's Code Reviews Are Only as Good as Your Prompt

https://blog.kilo.ai/p/glm-52s-code-reviews-are-only-as
1•justiceforsaas•15m ago•0 comments

Why averaging LLM benchmark scores is fundamentally broken

https://arxiv.org/abs/2605.11205
1•testofschool•17m ago•0 comments

Perseverance Finds Complex Organic Matter on Mars

https://www.sci.news/space/perseverance-complex-organic-matter-mars-14882.html
1•wasting_time•17m ago•0 comments

Ditching Claude for OpenCode and OpenRouter

https://www.ianwootten.co.uk/2026/07/01/ditching-claude-for-opencode-and-openrouter/
3•jandeboevrie•18m ago•0 comments

Show HN: Bol.ai – Extract structured data from Bills of Lading

https://bol.ai/
1•dutchcode•18m ago•0 comments

Show HN: Pokayoke – turn repo conventions into deterministic checks for agents

https://pokayoke.codes
1•sarreph•20m ago•0 comments

How can we make Twitter friendlier

3•RoastSlop•29m ago•1 comments

Dynamo Draughts. 10x10 game for DOS, open source

https://orac81.itch.io/dynamo-draughts
2•orac81•29m ago•0 comments

Show HN: Petabyte-scale storage for AI agent sandboxes

https://twitter.com/aniketmaurya/status/2072249879573754225
3•theaniketmaurya•32m ago•1 comments

Solar Panels: AC vs. DC (2008)

https://rimstar.org/renewnrg/solarpwr.htm
1•tetris11•33m ago•0 comments

Google Gemini Claims to be "structurally protective" of Donald Trump

https://www.thatprivacyguy.com/blog/google-ai-guardrails-protect-trump/
3•AlexanderHanff•34m ago•1 comments

Single Dose of Frog-Derived Gut Bacterium Eradicates 100% of Tumors in Mice

https://www.thefocalpoints.com/p/new-study-frog-derived-gut-bacterium
3•mpweiher•35m ago•0 comments

Vast Majority support clampdown on social media to protect children

https://www.ippr.org/media-office/vast-majority-support-clampdown-on-social-media-to-protect-chil...
1•vrganj•40m ago•0 comments

I'm Building an App to make $10k/month and I'm Recording the whole thing

https://twitter.com/jomatech/status/2071774976173355221
1•rzk•42m ago•0 comments

Show HN: Fail2ban-Dashboard

https://github.com/webishdev/fail2ban-dashboard
2•musicmatze•43m ago•0 comments

The evolution of window and class extra bytes in Windows

https://devblogs.microsoft.com/oldnewthing/20260629-00/?p=112484
1•Stratoscope•44m ago•0 comments

Building AI for Production Requires More Engineering Than AI

https://geekyants.com/blog/the-hidden-cost-of-delaying-ai-product-modernization-in-enterprise-bus...
2•Max536752•44m ago•0 comments

Bloomberg: Spain Built Too Much Solar. Investors Want Out

https://www.bloomberg.com/news/articles/2026-06-29/spain-s-solar-and-wind-power-boom-is-an-invest...
3•vblanco•46m ago•2 comments

Scientists say most people need more protein than current guidelines suggest

https://www.sciencedaily.com/releases/2026/06/260622091429.htm
2•bushwart•48m ago•2 comments

What If a City Ran on UTC for Two Weeks?

https://zulu.sekor.eu.org/
1•modinfo•51m ago•0 comments

Getty Images Plans to End Shutterstock Deal After U.K. Imposes Conditions

https://www.wsj.com/business/getty-images-plans-to-end-shutterstock-deal-after-u-k-imposes-condit...
1•thm•52m ago•0 comments

Thoughts on the Near Future

https://xcancel.com/i/article/2072056960430789032
2•alecco•53m ago•1 comments