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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

How Musk Might Defeat the Statute of Limitations Defense

https://chatlaw.substack.com/p/how-musk-might-defeat-the-statute
1•dsubburam•30s ago•0 comments

Alexander Grothendieck Revolutionized 20th-Century Mathematics

https://www.quantamagazine.org/how-alexander-grothendieck-revolutionized-20th-century-mathematics...
1•digital55•35s ago•0 comments

Data centers loom over Georgia governor race

https://www.politico.com/news/2026/05/19/data-centers-loom-over-georgia-governor-race-00929073
1•1vuio0pswjnm7•1m ago•0 comments

Cybertruck owner believed Elon Musk that it could cross lake – now he's in jail

https://electrek.co/2026/05/19/tesla-cybertruck-owner-believed-elon-musk-lake-jail/
1•neilfrndes•2m ago•0 comments

Awesome database stories from the best

https://github.com/erenworld/awesome-database/
1•erenturkoglu•3m ago•0 comments

Benchmarking AI coding agents for distributed SQL: 350 runs, 17 models

https://www.yugabyte.com/blog/benchmarking-ai-coding-agents-for-distributed-sql-lessons/
1•mityash•3m ago•0 comments

Notes on AI, Labor, and China

https://jasmi.news/p/party-in-the-permanent-underclass
1•ripe•4m ago•1 comments

Co-Scientist: A multi-agent AI partner to accelerate research

https://deepmind.google/blog/co-scientist-a-multi-agent-ai-partner-to-accelerate-research/
1•smooke•5m ago•0 comments

How to set up a secure back end for hosting a shadow library mirror

https://software.annas-archive.gl/AnnaArchivist/annas-archive/-/work_items?show=eyJpaWQiOiIzMDUiL...
1•Cider9986•7m ago•0 comments

Woman dies after falling into NYC manhole

https://abcnews.com/US/woman-dies-after-falling-nyc-manhole/story?id=133109814
1•SilverElfin•8m ago•0 comments

Training a 22MB prompt injection classifier

https://www.stackone.com/blog/training-22mb-prompt-injection-classifier/
1•Hiskias•10m ago•0 comments

Show HN: Google Search Console MCP – read-only, OAuth, free

https://calmseo.com/google-search-console-mcp
2•noahflk•10m ago•0 comments

Denver has a plan to heat and cool buildings without fossil fuels

https://text.npr.org/nx-s1-5734477
3•mooreds•12m ago•0 comments

Gender Gaps in Education and Declining Marriage Rates (2025)

https://opportunityinsights.org/paper/bachelors-without-bachelors/
2•mooreds•12m ago•0 comments

I committed to writing and sharing 30 jokes in 30 days. Here's what I learned

https://pammoore.substack.com/p/i-committed-to-writing-and-sharing
2•mooreds•13m ago•0 comments

Why Aren't Americans Living Longer?

https://now.tufts.edu/2026/03/09/why-arent-americans-living-longer
3•littlexsparkee•13m ago•1 comments

Nobel laureate Olga Tokarczuk apparently used AI to write her latest novel

https://lithub.com/nobel-laureate-olga-tokarczuk-apparently-used-ai-to-write-her-latest-novel/
11•bookofjoe•14m ago•6 comments

Stable Audio 3

https://arxiv.org/abs/2605.17991
3•guardienaveugle•15m ago•0 comments

Russian Troops' Fear Grows as Ukraine AI "Slaughterbot" Drones Headhunt Them

http://www.thelowdownblog.com/2026/05/russian-troops-fear-grows-as-ukraine-ai.html
3•tim333•16m ago•0 comments

California gubernatorial candidate investigation re: payments to influencers

https://www.washingtonpost.com/technology/2026/05/15/tom-steyers-influencer-campaign-triggers-cal...
2•1vuio0pswjnm7•16m ago•0 comments

Google is its own worst enemy

https://disconnect.blog/google-is-its-own-worst-enemy/
2•speckx•16m ago•0 comments

Handcrafted with Care: Alfred's Core Values – Alfred Blog

https://www.alfredapp.com/blog/productivity/handcrafted-with-care-alfreds-values/
2•samtrack2019•17m ago•0 comments

Meta begins 8k job cuts in AI efficiency push

https://www.latimes.com/business/story/2026-05-20/meta-begins-8-000-global-job-cuts-in-ai-efficie...
7•1vuio0pswjnm7•18m ago•0 comments

Wi-Wi Is Wireless Time Sync at 1 Nanosecond

https://www.jeffgeerling.com/blog/2026/wi-wi-is-wireless-time-sync-less-than-5ns/
4•Brajeshwar•19m ago•0 comments

How I burned 389K Claude Code cache-creation tokens before the real prompt

https://www.skinny.cloud/
2•vipdestiny•19m ago•0 comments

Meta Begins 8k Global Job Cuts in AI Efficiency Push

https://news.bloomberglaw.com/artificial-intelligence/meta-begins-job-cuts-in-efficiency-push-spu...
4•1vuio0pswjnm7•21m ago•0 comments

Betlang: A tiny (50kb) programming language detection model

https://github.com/DioxusLabs/betlang
2•demonthos•21m ago•0 comments

Microsoft Agent 365: Autonomous AI for enterprise governance by 2026

https://www.hitechies.com/microsoft-agent-365-autonomous-ai-enterprise-governance-2026/
2•dhakalster•21m ago•0 comments

ChatGPT and other AI bots made errors before Scottish election, study finds

https://www.theguardian.com/technology/2026/may/20/ai-chatbots-chatgpt-replika-grok-gemini-misinf...
2•chrisjj•23m ago•1 comments

Show HN: MulmoClaude – open-source platform where Claude composes tools and GUIs

https://github.com/receptron/mulmoclaude
2•snakajima•23m ago•0 comments