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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/

A lock proves the security of the room and not that the room is empty

https://github.com/thansz137/asiyah-protocol/blob/main/dibur/2026-02-20_dibur.md
1•thansz•56s ago•0 comments

AMD removes free Linux Vivado support

https://www.amd.com/en/products/software/adaptive-socs-and-fpgas/vivado/vivado-licensing-options....
2•yesod•3m ago•1 comments

NHS to close-source GitHub repos over AI, security concerns

https://www.theregister.com/software/2026/05/05/nhs-to-close-source-github-repos-over-ai-security...
2•raviisoccupied•4m ago•0 comments

New rule in Peru restricts authors with retractions from getting special bonuses

https://retractionwatch.com/2026/05/18/peru-rule-retractions-special-bonuses-decreto-supremo/
2•leephillips•5m ago•0 comments

Selling an HTML file for a few grand

https://www.nickstambaugh.dev/posts/selling-html-file-for-a-few-grand/
1•speckx•7m ago•0 comments

Show HN: Enhanced Copy – copy buttons that include the site's AI prompt

https://github.com/vaddisrinivas/enhanced-copy
1•srinivasvaddi•7m ago•0 comments

Generative AI's Existential Cringe

https://www.whatwelo.st/p/generative-ais-existential-cringe
1•hansmayer•7m ago•0 comments

Recreate famous water profiles using supermarket bottled water

https://www.waterdictionary.net
1•smugglerFlynn•7m ago•0 comments

NX compromised: supply chain attack via IDE extension, again

https://www.stepsecurity.io/blog/nx-console-vs-code-extension-compromised
1•Jehuty64•7m ago•0 comments

Show HN: drea – podcast app w/ free ad block

https://drea.fm/
1•hamza_q_•8m ago•0 comments

Shutterstock to pay $35M over hard-to-cancel subscriptions

https://www.ftc.gov/news-events/news/press-releases/2026/05/shutterstock-pay-35-million-settle-ft...
3•Lihh27•8m ago•0 comments

Who Reads My RSS Feed?

https://george.mand.is/2026/05/who-reads-my-rss-feed/
1•cdrnsf•9m ago•0 comments

Web Push notification suppression bypass (Chrome, Edge, Safari)

https://www.bountyy.fi/blog/sleeping-agent-web-push
2•chinesemango•11m ago•0 comments

We Need a More Serious Discussion About Suicide and AI Chatbots

https://www.techdirt.com/2026/05/18/we-need-a-more-serious-discussion-about-suicide-and-ai-chatbots/
1•cdrnsf•11m ago•0 comments

Purchased Digital Content may become unavailable due content provider licensing

https://twitter.com/WallStreetApes/status/2056231025731408181
2•bilsbie•12m ago•0 comments

Show HN: WldBoost: Burn Worldcoin for Better ChatGPT Prompts

https://wldboost.com
1•nner7210•13m ago•0 comments

How to Have Good Taste

https://www.commonreader.co.uk/p/how-to-have-good-taste
1•simplegeek•14m ago•0 comments

Lemon.li – extension of the charm.li database of car manuals (models thru 2025)

https://lemon-manuals.la/nfo.html
1•sans_souse•14m ago•0 comments

I created a 126K line Android app with AI – the workflow that worked for me

1•sminchev•14m ago•0 comments

The day CSS made me learn algebra again, and I liked it

https://schalkneethling.com/posts/the-day-css-made-me-learn-algebra-and-i-liked-it/
1•speckx•16m ago•0 comments

How to Start a Career When AI Is Doing Your Entry-Level Job

https://every.to/working-overtime/how-to-start-a-career-when-ai-is-doing-your-entry-level-job
1•momentmaker•18m ago•0 comments

Ben Forta - Does Vibe Coding Change My Answer?

https://forta.com/blog/does-vibe-coding-change-my-answer
1•rmason•19m ago•0 comments

How to build an AI helper for your team with Cowork

https://www.theaithinker.com/p/how-to-build-an-ai-helper-for-your
1•adamfaik•19m ago•0 comments

Stack Overflow but for AI Agents

https://app.coauthor.skarp.app
1•ozzynxe•21m ago•1 comments

App to Record phone call on Android 11-16, without root, FOSS, privacy friendly

https://github.com/kitsumed/ShizuCallRecorder
1•kitsumed•24m ago•0 comments

Was my $48K GPU server worth it?

https://rosmine.ai/2026/05/13/was-my-48k-gpu-worth-it/
1•apwheele•25m ago•0 comments

Rankly's Agentic Commerce Protocol Tracker

https://www.tryrankly.com/protocol-tracker
1•rankly_admin•28m ago•1 comments

Grafana says stolen GitHub token allowed attackers to download its codebase

https://www.bleepingcomputer.com/news/security/grafana-says-stolen-github-token-let-hackers-steal...
3•p_stuart82•29m ago•1 comments

The FBI Wants to Buy Nationwide Access to License Plate Readers

https://www.404media.co/the-fbi-wants-to-buy-nationwide-access-to-license-plate-readers/
5•cdrnsf•29m ago•0 comments

Hyperpolyglot Lisp: Common Lisp, Racket, Clojure, Emacs Lisp

https://hyperpolyglot.org/lisp
9•veqq•31m ago•0 comments