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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/

An OpenAI Model Spent an Hour Finding a Sandbox Flaw to Open a Public PR

https://www.vincentschmalbach.com/an-openai-model-spent-an-hour-finding-a-sandbox-flaw-to-open-a-...
1•vincent_s•3m ago•0 comments

EU fines Google €890M for competition breaches over search and apps

https://www.theguardian.com/technology/2026/jul/23/eu-fines-google-for-competition-breaches-over-...
1•Stevvo•4m ago•0 comments

ButaGYM – An operating system for modern fitness businesses

https://butagym.az
1•bekovra•4m ago•0 comments

SK Hynix and ADATA warn memory shortages may continue beyond 2030

https://videocardz.com/newz/sk-hynix-expects-worst-ever-memory-shortage-in-2027-adata-expects-a-d...
1•dabinat•4m ago•0 comments

CameoDB update: native MCP support, jemalloc, and a 400M-record field test

https://github.com/cameodb/cameodb
1•gorancv•4m ago•0 comments

Iamsingle.app – a directory of single-file web apps

https://iamsingle.app/
1•habibicode•5m ago•0 comments

Kimi K3 Is Close to Claude on a Real Coding Task

https://www.vincentschmalbach.com/kimi-k3-close-to-claude-real-coding-task/
1•vincent_s•5m ago•0 comments

MD Editor

https://workspace.google.com/marketplace/app/stellar_md_editor/203279034010
1•mvl•5m ago•1 comments

Show HN: Sometimes it's faster to draw a box with an arrow than write a paragrap

https://github.com/hz47/Sketch2AI
1•hpko•7m ago•0 comments

Selfie for sign-in: a new, easy way to access your Google Account

https://blog.google/innovation-and-ai/technology/safety-security/selfie-video-sign-in/
1•meetpateltech•7m ago•0 comments

Curiosity Is the Bottleneck Now [video]

https://www.youtube.com/watch?v=YR-pnNcf8BI
2•daan_nijl•8m ago•0 comments

Our schema declared ON DELETE CASCADE. Production didn't have it

https://mengram.io/blog/schema-lied-production-cascade
1•mengram-ai•9m ago•0 comments

ZaGuu – an arena where AI agents play negotiation games and build identities

1•olllo•11m ago•0 comments

Infra First, Moul

https://moul.life/blog/infra-first/
1•ankitg12•14m ago•0 comments

Who the welfare state protects shapes a country's financial openness

https://theloop.ecpr.eu/who-the-welfare-state-protects-shapes-a-countrys-financial-openness/
1•kome•16m ago•0 comments

Microsoft to fund Mistral's European AI expansion in multibillion-dollar deal

https://www.reuters.com/business/microsoft-fund-mistrals-european-ai-expansion-multibillion-dolla...
1•VWWHFSfQ•17m ago•0 comments

Bstansell/conserver: Logged, multi-user access to device consoles

https://github.com/bstansell/conserver
1•ankitg12•19m ago•1 comments

How do you stay active in boring meetings?

1•CatalystPz•21m ago•1 comments

The reason entrepreneurs lose focus

https://www.indiehackers.com/post/the-real-reason-entrepreneurs-lose-focus-C7yH1bUSTypZodcqR0hz
1•staceyPTP•22m ago•0 comments

The absence of visible results does not mean the absence of progress

https://www.indiehackers.com/post/the-absence-of-visible-results-does-not-mean-the-absence-of-pro...
2•staceyPTP•22m ago•0 comments

What is 'Havana syndrome,' condition a CIA director reportedly suffered from?

https://www.washingtonpost.com/national-security/2026/07/22/what-is-havana-syndrome-condition-cli...
2•_tk_•22m ago•0 comments

How My Website Works: A Technical Look at the Stack

https://ammar-najjar.com/blog/website-architecture/
2•ammarnajjar•23m ago•1 comments

CanvasUI: HTML-in-Canvas Component Library

https://canvasui.dev
2•davekiss•24m ago•0 comments

Accidentally built a 500-site SEO mesh network and got 3k visits in 14 days

https://visionvix.com/seo-mesh-network/
1•julian-vix•24m ago•1 comments

Geekbench 7 launches with Ryzen 7 7700 baseline

https://videocardz.com/newz/geekbench-7-launches-with-ryzen-7-7700-baseline-adds-game-physics-av1...
1•leumon•26m ago•0 comments

Show HN: NvChat – A single-exe Windows client for Nvidia's free LLM API

https://github.com/akon47/NvChat
1•akon47•27m ago•0 comments

Tangled – tail CI logs over SSH

https://blog.tangled.org/ssh/
1•nerdypepper•27m ago•0 comments

Yes, you can copy our eval setup

https://langfuse.com/blog/2026-07-16-steal-our-eval-setup
1•clemo_ra•29m ago•0 comments

Liang Wenfeng Investor Exchange Meeting · Audio Transcript

https://www.fredgao.com/p/deepseeks-liang-wenfeng-breaks-his
1•hunglee2•29m ago•0 comments

Carbon: Graduating from the Experiment

https://www.youtube.com/watch?v=WJl4ftb5Fxg
1•mda•29m ago•1 comments