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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Show HN: Microsoft Agent Viewer

https://acs-viewer.pages.dev/
1•ellg•1m ago•0 comments

Show HN: AIs debating the same question – they disagree on everything

https://www.usecouncil.app/
1•jonnyhere•2m ago•0 comments

FreshRSS and BPC – Fetch full content from paywalled sites in FreshRSS with BPC

https://github.com/yuyangchee98/freshrss-bpc
1•yongyongyong•6m ago•0 comments

Ask HN: Good uses cases for Fabrice's microquickjs

1•fud101•14m ago•0 comments

A Big Fight over a Small Language in the Swiss Alps: a Plan to Tidy Up Romansh

https://www.newyorker.com/magazine/2025/12/08/a-very-big-fight-over-a-very-small-language
1•bookofjoe•17m ago•1 comments

New image sensor breaks optical limits [pdf]

https://phys.org/news/2025-12-image-sensor-optical-limits.pdf
1•sans_souse•23m ago•0 comments

Linus - kernel copyright licence covers software, does not extend to hardware

https://social.kernel.org/notice/B1aR6QFuzksLVSyBZQ
1•transpute•32m ago•0 comments

Motor powers prototype in-wheel electric powertrain system

https://www.electrichybridvehicletechnology.com/news/record-breaking-motor-powers-prototype-in-wh...
1•geox•33m ago•0 comments

Bridge Anonymization

https://github.com/elanlanguages/bridge-anonymization
1•handfuloflight•33m ago•0 comments

Why Taylor Swift's Frequent Flights Probably Won't Give Her Cancer

https://duncansnotes.substack.com/p/cosmic-radiation-at-10000-feet-why
2•laserduck•34m ago•1 comments

Production-Ready Speculative Decoding Models and Framework

https://lmsys.org/blog/2025-12-23-spec-bundle-phase-1/
1•gmays•34m ago•0 comments

Authenticating SSH Sessions with Secure Enclave

https://ewpratten.com/blog/ssh-secure-enclave
1•ewpratten•36m ago•1 comments

Selling Cool Domain

https://imtalking.com
1•nachoag7•40m ago•0 comments

Show HN: Kling Motion Control – Precise Motion Transfer from Video to Character

https://www.klingmotion.com/?i=d1d5k
2•lu794377•44m ago•0 comments

Advent of Code 2025: Haskell Solution Reflections for All 12 Days

https://blog.jle.im/entry/advent-of-code-2025.html
2•todsacerdoti•45m ago•0 comments

Love Actually is around Heathrow

https://www.heathrow.com/latest-news/love-actually-is-all-around-at-heathrow-airport
3•susam•53m ago•0 comments

Stock Success Predictor – FinSight AI

https://buy.stripe.com/6oUfZi6Xd51XeL3bxP9EI00
2•HyperScaler•56m ago•0 comments

I Built Cursor for Marketing Emails

https://www.sequenzy.com
2•nikpolale•59m ago•1 comments

A movie-like Music Video built using AI

https://www.youtube.com/watch?v=SvfCvAdxKew
1•fagnerbrack•1h ago•1 comments

China manga convention bars Japanese content amid political tensions

https://english.kyodonews.net/articles/-/67449
3•anigbrowl•1h ago•3 comments

Show HN: Calclock, Countdown/Lifeclock, Configurable

https://thysys.com/happy-new-year.html
1•HocusLocus•1h ago•0 comments

The Next-Gen Mainboard Designed with AmigaOS4 and MorphOS in Mind

https://mirari.vitasys.nl/our-story/
1•todsacerdoti•1h ago•0 comments

The Illusion of Political Independence

https://www.mdpi.com/3042-8084/1/1/3
2•PaulHoule•1h ago•0 comments

Claude-How To

https://github.com/luongnv89/claude-howto
2•handfuloflight•1h ago•0 comments

VidScore AI: Analyze your videos before you post

https://apps.apple.com/us/app/vidscore-ai-viral-analytics/id6756249746
2•gavfaro•1h ago•1 comments

Ask HN: How many HN'ers Celebrate Christmas vs. ?

7•gist•1h ago•8 comments

Coding Snake in Functional JavaScript (2018) [video]

https://www.youtube.com/watch?v=poVMBGe1THE
1•howToTestFE•1h ago•0 comments

Ask HN: How can anyone be confident in investor meetings?

2•junkaccount•1h ago•1 comments

Librarians Tired of Being Accused of Hiding Secret Books That Were Made Up by AI

https://gizmodo.com/librarians-arent-hiding-secret-books-from-you-that-only-ai-knows-about-200069...
6•vitalnodo•1h ago•3 comments

QEMU Version 10.2.0 Released

https://www.qemu.org/2025/12/24/qemu-10-2-0/
1•todsacerdoti•1h ago•0 comments