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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Evolving MSFT's approach to coordinated security research: In scope by default

https://www.microsoft.com/en-us/msrc/blog/2025/12/in-scope-by-default
1•icampanini•56s ago•1 comments

New AI tool turns social chatter into pure sales Intel

https://www.socialsalesanalyzer.ai/ai-ssa-join-live
1•brightarrowtech•2m ago•1 comments

Pg_ClickHouse Postgres Extension

https://github.com/ClickHouse/pg_clickhouse
1•AlexClickHouse•3m ago•0 comments

Show HN: Autofix Bot – Hybrid static analysis and AI code review agent

1•sanketsaurav•3m ago•0 comments

Pure-Go implementation without CGO dependency

https://github.com/golang/go/issues/76786
2•andrewstetsenko•4m ago•0 comments

AlphaEvolve on Google Cloud

https://cloud.google.com/blog/products/ai-machine-learning/alphaevolve-on-google-cloud
1•gmays•6m ago•0 comments

ChatGPT's 'adult mode' is expected to debut in Q1 2026

https://www.theverge.com/news/842657/openai-chatgpt-adult-mode-debut-q1-2026
1•amrrs•7m ago•0 comments

Apple wins partial reversal of sanctions in Epic Games antitrust lawsuit

https://www.reuters.com/sustainability/boards-policy-regulation/us-appeals-court-partly-reverses-...
1•benoau•8m ago•0 comments

Serious concerns about the rise in sycophantic and delusional outputs [pdf]

https://www.iowaattorneygeneral.gov/media/cms/12_68B5C629180F6.pdf
1•layer8•8m ago•0 comments

RFC 6677 DNS Transport over TCP – Implementation Requirements

https://www.ietf.org/rfc/rfc7766.txt
1•1vuio0pswjnm7•9m ago•0 comments

AI-led integrations: A faster alternative to iPaaS for legacy systems

https://isoform.ai/blog/ai-led-integration-fastest-ebitda-lever-for-private-equity
2•Chrisywz•12m ago•1 comments

US mass killings drop to 20-year low. Some policy shifts might be helping

https://www.csmonitor.com/USA/Society/2025/1208/mass-killings-shootings-drop
1•paulpauper•12m ago•0 comments

Oracle shares slide on $15B increase in data center spending

https://arstechnica.com/information-technology/2025/12/oracle-shares-slide-on-15b-increase-in-dat...
2•andyjohnson0•12m ago•1 comments

A Friendly Response to Alex and Tyler's Discussion About the Debt

https://www.theunseenandtheunsaid.com/p/a-friendly-response-to-alex-and-tylers
2•paulpauper•14m ago•0 comments

Did industrial policy drive East Asian growth?

https://www.richardhanania.com/p/human-capital-not-industrial-policy
1•paulpauper•14m ago•0 comments

Stop Multitasking at Work: Better Productivity Methods

https://burkerecruiting.com/stop-multitasking-at-work-better-productivity-methods/
1•takenotes•15m ago•0 comments

PromptForge: A visual prompt management system for AI image generation

https://github.com/intelligencedev/PromptForge
1•doener•16m ago•0 comments

My new fave thing to go to is algoraves

https://interconnected.org/home/2025/12/11/live
1•ingve•17m ago•0 comments

Foundations: My 1999 (and Part of 2000)

https://michaeljburry.substack.com/p/foundations-my-1999-and-part-of-2000
1•lawrenceyan•21m ago•0 comments

My Code Editor

https://www.mariasolos.com/posts/my-code-editor/
1•jesperlang•21m ago•0 comments

Show HN: Gotui – a modern Go terminal dashboard library

https://github.com/metaspartan/gotui
2•carsenk•22m ago•0 comments

Hundreds quarantined as measles outbreak accelerates in the South

https://www.dailymail.co.uk/health/article-15375729/Hundreds-quarantined-measles-outbreak-acceler...
3•Bender•22m ago•0 comments

Hundreds Quarantined in South Carolina as Measles Spreads

https://www.nytimes.com/2025/12/11/well/measles-cases-outbreak-south-carolina.html
4•measurablefunc•22m ago•0 comments

Compound Engineering: How Every Codes with Agents

https://every.to/chain-of-thought/compound-engineering-how-every-codes-with-agents
1•mooreds•22m ago•0 comments

Microsoft Patches 57 Vulnerabilities, Three Zero-Days

https://www.securityweek.com/microsoft-patches-57-vulnerabilities-three-zero-days/
1•Bender•23m ago•0 comments

Show HN: XeraSentry – Real-time Ethereum security monitoring in Python

1•Chu_Wong•23m ago•0 comments

Gogs Git service zero-day exploited since Dec. 1

https://www.scworld.com/news/gogs-git-service-exploited-since-dec-1
1•Bender•23m ago•0 comments

OWASP PTK 9.3.0 with Support

1•DenisPodgurskii•24m ago•0 comments

Malicious VSCode Marketplace extensions hid trojan in fake PNG file

https://www.bleepingcomputer.com/news/security/malicious-vscode-marketplace-extensions-hid-trojan...
5•speckx•28m ago•0 comments

Higher Ed's Dirtiest Secret

https://hollisrobbinsanecdotal.substack.com/p/teaching-quality
1•HR01•29m ago•1 comments