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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/

My Claude.md

https://lws.io/blog/claude-dot-md/
1•saikatsg•2m ago•0 comments

Postgres 19: Monitoring only gets better

https://clickhouse.com/blog/postgres-19-monitoring-whats-new
1•saisrirampur•2m ago•0 comments

Antirez Brings Vision to DS4, DeepSeek V4 Flash Runs Locally on an M5 Max

https://pasqualepillitteri.it/en/news/13949/ds4-antirez-vision-local-deepseek-v4-flash-m5-max
2•fulafel•3m ago•0 comments

Brazilian scientist wins $500K for growing food with fewer chemicals

https://apnews.com/article/world-food-prize-brazil-soybeans-ebcb46d1a8384e67193ce2e64364ab42
1•thunderbong•7m ago•0 comments

Analysis of all companies in Y Combinator's S26 batch

https://accessfund.vc/insights/s26/batch-brief
2•tstime2•9m ago•1 comments

The Handshake Deal Protocol

https://www.ycombinator.com/handshake
1•tornikeo•9m ago•0 comments

Show HN: I Have Been Clawed – Index of coding agent incidents

https://ihavebeenclawed.com/
2•nezhar•11m ago•0 comments

Show HN: DirectXSplat – D3D12 Gaussian splat renderer, up to 2.4× gsplat FPS

https://github.com/pbkx/DirectXSplat
1•rmi0•15m ago•0 comments

Show HN: I built a tool that runs 258 automated checks against a WordPress site

https://wpaudit.cc/
1•mysticmetal•16m ago•0 comments

OpenAI's Astra uses "recurrent depth" to think silently

https://www.reddit.com/r/singularity/comments/1w4wc0p/openais_astra_uses_recurrent_depth_to_think/
1•armcat•18m ago•0 comments

Show HN: Gawkbot – open-source Grok bot with local vms for each bot

https://gawk.bot
3•najmuzzaman•24m ago•0 comments

Why Nvidia called their next generation compute "Feynman"

https://www.youtube.com/watch?v=TxM5B-9TFoM
1•echohive42•28m ago•1 comments

Sleep regularity – where do we go from here?

https://academic.oup.com/sleep/article/49/8/zsag114/8661334
1•petreradu•29m ago•0 comments

Who governs what autonomous AI agents execute?

https://zenodo.org/records/22003768
1•lcm3•30m ago•0 comments

We made it faster, it got worse

https://medium.com/@gurvinder372/article-2-we-made-it-faster-it-got-worse-75895de64a9e
2•gps372•30m ago•0 comments

A Little Over, a Little Under

https://granot.io/a-little-over-a-little-under/
1•tomgs•31m ago•0 comments

Show HN: 1Dial, an AI you can call/Text to get real-world tasks done

https://www.1dial.ai/
3•harshil9968•31m ago•0 comments

The John Ternus era begins at Apple

https://techcentral.co.za/john-ternus-apple-ceo-tim-cook/285604/
2•deepmem•32m ago•0 comments

Show HN: Orchestrate frontier AIs on the subscriptions you already pay for

https://github.com/PolyHelper/C1
1•PolyHelper•33m ago•0 comments

Discord's Bet on Gamified Ads

https://discorder.tools/blog/discord-play-quest-plus/
1•souvic•34m ago•0 comments

Meet the People Taking over Hacker News

https://www.ycombinator.com/blog/meet-the-people-taking-over-hacker-news
2•gurjeet•37m ago•0 comments

Show HN: Browser SplitView Master – view up to 16 websites in one Chrome window

https://chromewebstore.google.com/detail/browser-splitview-master/ngkcpcmnmbdchbejbgiegaiagpljkkhj
1•mysticmetal•39m ago•1 comments

Skills vs. MCP tools for AI agents: When to use which

https://blog.logrocket.com/skills-vs-mcp-tools-agent-guide/
2•qikouki•46m ago•0 comments

Community, Censorship, and Why Hope Still Matters: Naomi Kritzer Interview

https://forceandfable.com/2026/04/06/whyhopestillmatters_naomikritzerinterview/
2•bryanrasmussen•46m ago•0 comments

Dyson CameraJet: The only toothbrush with a camera and a jet

https://www.dyson.com/discover/news/latest/introducing-camerajet
1•samaysharma•50m ago•0 comments

Pelliamonds

https://achromath.substack.com/p/pelliamonds
1•vismit2000•54m ago•0 comments

AI safety is designed in the West, and failing users everywhere

https://restofworld.org/2026/ai-safety-bias/
1•thm•57m ago•0 comments

Fungible Memories for Automated Technology Mapping and Retargeting: PLDI'26 Talk [video]

https://www.youtube.com/watch?v=TgqyyV7GqC4
1•matt_d•59m ago•0 comments

Just Bury Your Trash

https://worksinprogress.co/issue/just-bury-your-trash/
3•barry-cotter•1h ago•1 comments

Amazon, Synopsys to cut more than 275 Bay Area tech jobs

https://www.sfchronicle.com/tech/article/amazon-synopsys-tech-layoffs-22413103.php
3•vismit2000•1h ago•0 comments