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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/

"Cancelling Async Rust" – RustConf 2025

https://www.youtube.com/watch?v=zrv5Cy1R7r4
1•tcp_handshaker•2m ago•0 comments

Building Kiteshield: A journey from prototype to safety-critical

https://www.youtube.com/watch?v=6YGghlVOXlE
1•tcp_handshaker•7m ago•0 comments

Using LLM in the shebang line of a script

https://til.simonwillison.net/llms/llm-shebang
1•dnw•8m ago•0 comments

Reanimation of the First Automatic Theorem Prover (From 1956)

https://github.com/dmoews/logic-theorist
1•abrax3141•17m ago•1 comments

Show HN: Gremlin

https://github.com/aosmith/gremlin
1•aosmith•26m ago•0 comments

Zero-native – Build native desktop apps with web UI

https://zero-native.dev
2•gedy•26m ago•0 comments

Revisiting "No Silver Bullets" in the Age of AI

https://newsletter.pragmaticengineer.com/p/revisiting-no-silver-bullets-in-the
1•perpetua•28m ago•1 comments

Filmeon: Physically grounded, color-managed inversion for negative film scans

https://filmeon.app/
1•alibosworth•33m ago•0 comments

Cloud Latency Map – Latency Changes by City

https://clm.kentik.com/
2•embedding-shape•36m ago•0 comments

Ask HN: Is your kids Alexa now have conversational AI?

1•stevenhubertron•36m ago•0 comments

Show HN: Mp4 or mov to detailed design spec MCP

https://github.com/Meliwat/spectr
1•Meliwat93•36m ago•0 comments

Obsidian Community

https://community.obsidian.md/
1•hisamafahri•41m ago•0 comments

Zig vs. Rust, agentic coding, and intellectual control [video]

https://www.youtube.com/watch?v=urMV1JKbIxs
2•alibosworth•41m ago•0 comments

AI agents can self-replicate. Who is building for the human side?

https://hugonomy.com/
1•GlyphWeaver_a•42m ago•0 comments

Starship V3

https://www.spacex.com/updates#starship-v3
10•fprog•42m ago•0 comments

London Rooftop Where Beatles Played Last Gig (1969) to Become Museum

https://www.nytimes.com/2026/05/11/arts/music/beatles-museum-london.html
2•bookofjoe•47m ago•1 comments

How AI Killed a 133-Year-Old Princeton Tradition

https://www.theatlantic.com/ideas/2026/05/princeton-ai-honor-code/687144/
1•KnuthIsGod•48m ago•0 comments

The New York Times Got Caught Using AI Hallucinations in Its Reporting

https://thewalrus.ca/the-new-york-times-got-caught-using-ai-hallucinations-in-its-reporting/
2•ireflect•49m ago•0 comments

RND: A 1 button generative 4-track synth

https://www.cymaforma.com/rnd-synth
1•peteforde•55m ago•0 comments

Could You Live Without a Computer? I Can.

https://www.thefp.com/p/could-you-live-without-a-computer
2•James72689•59m ago•1 comments

Atlas: An LLM inference engine written from scratch in Rust and CUDA

https://atlasinference.io
2•emrehan•1h ago•0 comments

I traveled 65 countries and built my own travel tracker

https://play.google.com/store/apps/details?id=com.ahnlee.jidoapp&hl=en_US
1•leeahn137•1h ago•1 comments

First 3D Emoji?

1•xxemogirl694uxx•1h ago•0 comments

Facebook is a hub for illegal wildlife trade, and that's by design, report says

https://news.mongabay.com/2026/05/facebook-is-a-hub-for-illegal-wildlife-trade-and-thats-by-desig...
3•PaulHoule•1h ago•0 comments

AI shouldn't have a meter. Unlimited tokens. Forever

https://www.openmonoagent.ai/
13•startuphakk•1h ago•6 comments

Cloudflare breaks promise to not gatekeep small browsers

https://forum.palemoon.org/viewtopic.php?t=33442
3•mimasama•1h ago•2 comments

Thoughts on the £1M SaSu Fine

https://prestonbyrne.com/2026/05/12/thoughts-on-the-1000000-sasu-fine/
3•delichon•1h ago•0 comments

Internet draft for variable length UUIDs – up to 4,096 bits

https://datatracker.ietf.org/doc/draft-davis-uuidrev-uuid-long/
3•jhealy•1h ago•0 comments

OpenJai – An Open Source Implementation Effort for a Jai-Style Systems Language

https://github.com/withlang-dev/open-jai
1•TheWiggles•1h ago•0 comments

US Army goes green-ish, wants soldiers munching on plant proteins

https://www.theregister.com/offbeat/2026/05/12/us-army-eyes-alternative-proteins-for-soldiers-in-...
6•Bender•1h ago•3 comments