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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/

Pinball Shopify

https://bfcm.shopify.com/
1•SnaKeZ•2m ago•0 comments

Americans no longer see four-year college degrees as worth the cost

https://www.nbcnews.com/politics/politics-news/poll-dramatic-shift-americans-no-longer-see-four-y...
2•jnord•4m ago•0 comments

Memory-Graph – Knowledge Graph Memory for Claude Code with SQLite/Neo4j/Memgraph

https://github.com/gregorydickson/memory-graph
1•gregorydickson•6m ago•1 comments

Nobara Project: Fedora Linux with user-friendly fixes added to it

https://nobaraproject.org/
1•doener•13m ago•0 comments

Braids Osu Article [pdf] (go state)

https://people.math.osu.edu/chmutov.1/wor-gr-05-20/wor-gr-su20/braids-2020.pdf
1•marysminefnuf•14m ago•0 comments

Human3R: Everyone Everywhere All at Once

https://fanegg.github.io/Human3R/
1•pcooper•16m ago•0 comments

AI Teddy Bear That Talked Fetishes and Knives Is Back on the Market

https://gizmodo.com/ai-teddy-bear-that-talked-fetishes-and-knives-is-back-on-the-market-2000691509
1•gnabgib•19m ago•0 comments

Show HN: I Recreated the Windows Longhorn (2004) Aurora Effect in HTML5 Canvas

https://github.com/brainvine/longhorn-aurora
1•AntonioEritas•20m ago•0 comments

Retro RenderMan: shading food for 'Ratatouille' (2020)

https://beforesandafters.com/2020/07/22/retro-renderman-shading-food-for-ratatouille/
1•HL33tibCe7•22m ago•0 comments

Lobste.rs

https://lobste.rs/
1•dtj1123•24m ago•0 comments

Show HN: Xlerb – A Compiled "Forth" for the Beam

1•shawa_a_a•24m ago•0 comments

Show HN: I made a free log anonymizer in the browser

https://www.getloglens.com/tools/log-sanitizer
2•wazzaaaa•25m ago•1 comments

Show HN: Raytha v1.5 – open-source .NET CMS with a new visual page builder

https://github.com/RaythaHQ/raytha
1•apexdodge•25m ago•0 comments

Show HN: ClearHearAI-The Essential App for Hearing Impaired and Deaf Communities

https://clearhearai.com/
1•justinos•30m ago•0 comments

New bill would revive single-room occupancy apartments in NYC

https://www.6sqft.com/new-bill-would-revive-single-room-occupancy-apartments-in-nyc/
3•geox•31m ago•2 comments

Bazzite: The next generation of Linux gaming

https://bazzite.gg/
4•doener•38m ago•0 comments

Show HN: Browser Based Softbody Physics

https://www.maanraket.nl/experiments/peachy-keen/
2•cowboy_henk•39m ago•0 comments

Key Questions Developers Ask in Interviews (Not About Pizza Parties)

https://medium.com/@ogitog/what-developers-want-spoiler-not-pizza-parties-3b12b4291f5f
2•birdculture•40m ago•0 comments

How to Defend Against NPM Software Supply Chain Attacks

https://www.endorlabs.com/learn/how-to-defend-against-npm-software-supply-chain-attacks
1•danielhaven•42m ago•0 comments

North Carolina Town First to Deploy Defibrillator Drones During Emergencies

https://gizmodo.com/north-carolina-town-first-in-u-s-to-deploy-defibrillator-drones-during-actual...
1•JumpCrisscross•43m ago•0 comments

The Computer Wants to Lose Your Data: Bonus Bits

https://blog.sinjakli.co.uk/2025/11/29/the-computer-wants-to-lose-your-data-bonus-bits/
1•todsacerdoti•49m ago•0 comments

The Long Read: Heretics in the Temple of Educational Orthodoxy

https://rogerpartridge.substack.com/p/heretics-in-the-temple-of-educational
1•toomuchtodo•52m ago•0 comments

MAME 0.283

https://www.mamedev.org/?p=557
3•chungy•56m ago•1 comments

"Look on every exit as being an entrance somewhere else" – Tom Stoppard died

https://www.bbc.com/news/articles/c74xe49q7vlo
2•mstep•57m ago•0 comments

Show HN: Bingelister – a chronological YouTube channel player

http://bingelister.com
1•zurbaran•57m ago•0 comments

What We Know About the DOE's New Genesis Mission

https://www.hpcwire.com/2025/11/26/heres-what-we-know-about-the-does-new-genesis-mission/
1•rbanffy•1h ago•0 comments

AI-Revived Cube World

1•liangzn•1h ago•0 comments

Wikidata-Toolkit: Java library to interact with Wikibase

https://github.com/Wikidata-Toolkit/Wikidata-Toolkit
1•amadeuspagel•1h ago•0 comments

Claude 4.5 Opus' Soul Document

https://www.lesswrong.com/posts/vpNG99GhbBoLov9og/claude-4-5-opus-soul-document
4•mcculley•1h ago•0 comments

Robert A.M. Stern, Architect Who Reinvented Prewar Splendor, Dies at 86

https://www.nytimes.com/2025/11/27/arts/design/robert-am-stern-dead.html
1•bookofjoe•1h ago•1 comments