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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

"Grill Me" Skill

https://www.aihero.dev/skills-grill-me
1•theptip•1m ago•0 comments

Show HN: Open-plan-annotator – local annotation UI for working with agent plans

https://github.com/ndom91/open-plan-annotator
1•ndom91•2m ago•0 comments

Portable Executable

http://justine.lol/ape.html
1•tosh•6m ago•0 comments

Ask HN: Anyone suffering from the tyranny of the Waiting Equation?

1•akersten•6m ago•0 comments

Decker

https://beyondloom.com/decker/
1•tosh•8m ago•0 comments

Code Complexity Hooks for Agents

https://github.com/dekobon/big-code-analysis
1•dekobon•8m ago•1 comments

Show HN: ModelFuzz – Open-source runtime guardrails for AI agents

https://www.modelfuzz.com/
1•higagan•8m ago•0 comments

Header-only C/C++ Meshtastic LoRa protocol stack for embedded systems

https://github.com/jstockdale/meshtastic-lite
1•westurner•9m ago•1 comments

Narcissism, Machiavellianism, and AI Use

https://thenextweb.com/news/dark-traits-problematic-ai-use-psychology
2•colinprince•11m ago•0 comments

Sell the Company for $400M? He's Giving It Away Instead

https://www.nytimes.com/2026/07/25/business/grady-white-boats-charity.html
3•keithly•11m ago•0 comments

Terminal Sessions – VSCode extension for tmux terminals that survive restarts

https://github.com/visul/terminal-sessions
1•testycool•11m ago•0 comments

Google Cache used to have a copy of this page at

https://www.hornet.org/wikipedia-notes.txt
1•jruohonen•12m ago•0 comments

Show HN: Readability for web and PDFs with TTS and local AI summary

https://github.com/ldenoue/readability-read-aloud-web-pdf-ai-summary
1•ldenoue•12m ago•1 comments

Show HN: How many other kids need to be in the room before they match names

https://names.vaguespac.es/
1•thebigship•12m ago•0 comments

The Rust Async Runtime Footgun That Blocks Your Tokio Thread Pool

https://medium.com/@yalovoy/the-rust-async-runtime-footgun-that-blocks-your-entire-tokio-thread-p...
1•zero-ground-445•13m ago•0 comments

Show HN: An interactive way to exploit an LLM without going to jail

https://github.com/joshfischer1108/jailbreak-lab
1•joshfischer1108•14m ago•0 comments

The Segment Descriptor Cache (1998)

https://www.rcollins.org/ddj/Aug98/Aug98.html
1•jruohonen•17m ago•0 comments

Introduction to Data-Oriented Design [pdf]

https://www.gamedevs.org/uploads/introduction-to-data-oriented-design.pdf
1•tosh•19m ago•0 comments

Show HN: I made Claude quiz me on my own code before showing it

https://github.com/De-Cri/dont-kick-me-out
1•Ssamu3909•20m ago•0 comments

I Find Problems to Solve as a Staff Engineer

https://lalitm.com/post/find-problems-staff-engineer/
3•birdculture•23m ago•0 comments

Good productivity tools that run 100% in the browser (privacy in mind)

https://github.com/slaveofcode/goodwebtools
1•kresnadev•23m ago•0 comments

Show HN: Forkbench – a native Mac control room for several CLI coding agents

https://forkbench.com
1•forkbench•23m ago•0 comments

Hugging Face CEO calls for 'radical transparency' after 'unprecedented' OpenAI

https://techcrunch.com/2026/07/26/hugging-face-ceo-calls-for-radical-transparency-after-unprecede...
2•sbulaev•24m ago•0 comments

Oil tanker explodes after hitting naval mine in Strait of Hormuz

https://www.jpost.com/middle-east/iran-news/article-903687
2•ipunchghosts•24m ago•2 comments

Thoughts about the Leiden Declaration

https://gowers.wordpress.com/2026/07/26/thoughts-about-the-leiden-declaration/
1•artninja1988•27m ago•1 comments

Bast: SSH Multiplexer

https://bast.sh
1•handfuloflight•27m ago•0 comments

Show HN: Vocabulary, a daily game to learn words(V2)

https://www.quizingo.app/vocabulary
1•coder97•28m ago•0 comments

It's not empowering to hand off the details

https://davidnicholaswilliams.com/its-not-empowering-to-hand-off-the-details/
3•davnicwil•33m ago•0 comments

I spent a while building a torrent client for the Mac. It's called Swarm

https://get-swarm.com/
1•gkaimakas•37m ago•2 comments

Show HN: Simple Daily Game

https://playchain.app/
1•Fluzzman•39m ago•0 comments