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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

The Figure-Eight Model for Agentic DevEx

https://medium.com/@codefinger/the-figure-eight-model-for-agentic-devex-c76894b12de5
1•crcastle•1m ago•0 comments

.de TLD offline due to DNSSEC?

https://dnssec-analyzer.verisignlabs.com/nic.de
1•warpspin•2m ago•1 comments

GPT-5.5 Instant: Benchmarking the 52% Hallucination Reduction

https://the-decoder.com/chatgpt-update-rolls-out-gpt-5-5-instant-with-fewer-hallucinations-and-mo...
1•mohit17mor•5m ago•0 comments

The Evolving Foundations of Math

https://www.quantamagazine.org/series/the-evolving-foundations-of-math/
1•Anon84•6m ago•0 comments

A Namecheap bug got my domain suspended

https://captnemo.in/blog/2026/05/05/namecheap-whois/
1•captn3m0•6m ago•0 comments

FlashAlpha – Pre-computed GEX, vol surfaces and Greeks API for options traders

https://flashalpha.com/
1•SteveHenderson•7m ago•0 comments

Amazon's Durability

https://stratechery.com/2026/amazons-durability/
1•nowflux•8m ago•0 comments

Show HN: Faction Fiasco – single-player card battler, 100 unhinged characters

https://factionfiasco.com/
2•arowe•10m ago•1 comments

Concerns about health effects of seed oils are without scientific foundation

https://www.tandfonline.com/doi/full/10.1080/10408398.2026.2657527#abstract
1•littlexsparkee•11m ago•0 comments

ZenWinHook: Windows hooks for intercepting,modifying and controlling

https://github.com/talkingtogod/zenwinhook
1•midleg•11m ago•0 comments

Ads/CFT Correspondence

https://en.wikipedia.org/wiki/AdS/CFT_correspondence
1•simonebrunozzi•11m ago•0 comments

We ditched database triggers for audit logs

https://pydantic.dev/articles/audit-logs-replace-database-triggers
1•qianli_cs•12m ago•0 comments

Teaching Agents to "Invoke_Claude"

https://ninjahawk.github.io/blog/posts/invoke-claude.html
1•ninjahawk1•13m ago•0 comments

Your Attempt to Solve Debate Will Not Work

https://www.astralcodexten.com/p/your-attempt-to-solve-debate-will
1•paulpauper•13m ago•0 comments

Your AI Editor Doesn't Know What You're Doing

https://hashino.github.io/jekyll/update/2026/05/05/your-ai-editor-doesnt-know-what-youre-doing.html
1•hashino•13m ago•0 comments

Building the Future

https://www.coryd.dev/posts/2026/building-the-future
1•cdrnsf•13m ago•0 comments

Why Reddit blocked my daily visit to its mobile website

https://arstechnica.com/information-technology/2026/05/why-reddit-blocked-my-daily-visit-to-its-m...
3•robotnikman•15m ago•1 comments

Mapping Strings to Float Arrays in Go: How Fast Can We Go?

https://lemire.me/blog/2026/05/05/mapping-strings-to-float-arrays-in-go-how-fast-can-we-go/
1•chmaynard•15m ago•0 comments

Agentic Malware Analysis: String Decryption, API Hashing and Unpacking [video]

https://www.youtube.com/watch?v=azej1P17w9E
3•moneroloop2018•16m ago•0 comments

wolfSSL Announces SPDM Support in wolfTPM TPM 2.0

https://www.wolfssl.com/announcing-spdm-support-in-wolftpm/
1•aidangarske•17m ago•1 comments

Decomposing a Payment Gateway Integration: A Real /Draft:Decompose Walkthrough

https://www.getdraft.dev/blog/decompose-payment-gateway/
2•mayurpise•25m ago•0 comments

SMG: The Case for Disaggregating CPU from GPU in LLM Serving

https://pytorch.org/blog/lightseek-smg/
2•gmays•26m ago•0 comments

Google UK staff vote to unionise in protest against Israeli military contract

https://www.telegraph.co.uk/business/2026/05/05/google-ai-staff-vote-unionise-protest-israel-cont...
12•tmnvix•31m ago•0 comments

Are the Brooms Multiplying Yet?

https://maartenboudry.substack.com/p/are-the-brooms-multiplying-yet
2•paulpauper•32m ago•0 comments

Show HN: Score any website for AI design patterns

https://github.com/AdrianKrebs/ai-design-checker
2•hubraumhugo•33m ago•0 comments

Elixirkit – Building Desktop Apps with Elixir and Tauri

https://hexdocs.pm/elixirkit/tauri.html
4•auraham•35m ago•0 comments

How do you and your partner decide what to do on date nights?

3•meashik•35m ago•1 comments

US to safety test new AI models from Google, Microsoft, xAI

https://www.bbc.com/news/articles/cgjp2we2j8go
5•devonnull•37m ago•1 comments

Kuo: OpenAI Rumored to be fast-tracking first "AI agent phone"

https://xcancel.com/mingchikuo/status/2051523855286776034
2•etothet•37m ago•0 comments

Offshore wind's clean energy potential remains largely untapped, say experts

https://news.mongabay.com/2026/04/offshore-winds-clean-energy-potential-remains-largely-untapped-...
6•PaulHoule•39m ago•0 comments