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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/

Why is calling my asm function from Rust slower than calling it from C?

https://ohadravid.github.io/posts/2025-12-rav1d-faster-asm/
1•gavide•1m ago•0 comments

Mercedes Will Use Screws to Make Headlights Repairable

https://www.motor1.com/news/781768/mercedes-headlights-repairable-screws/
1•gpi•2m ago•0 comments

Show HN: Crovise – Static analysis for landing page conversion hypotheses

https://crovise.netlify.app/
1•adamofk•7m ago•0 comments

Show HN: Feather – a fresh Tcl reimplementation (WASM, Go)

https://www.feather-lang.dev
1•dhamidi•8m ago•0 comments

NMH BASIC

https://t3x.org/nmhbasic/index.html
1•AlexeyBrin•9m ago•0 comments

Writing an NES Emulator in Haskell

https://arthi-chaud.github.io/posts/funes/
1•birdculture•9m ago•0 comments

INSV Kaundinya – Indian wooden sailing ship built using traditional stitching

https://www.bairdmaritime.com/work-boat-world/other-workboats/vessel-review-insv-kaundinya-indian...
1•atomicnature•11m ago•0 comments

How to read more books in 2026

https://chamoda.com/sparks/how-to-read-more-books-in-2026
2•chamoda•12m ago•0 comments

Data is not a great VC-backed business

https://auren.substack.com/p/data-is-actually-not-a-great-vc-backed
1•AznHisoka•14m ago•0 comments

Beyond the Nat: Cgnat, Bandwidth, and Practical Tunneling

https://blog.rastrian.dev/post/beyond-the-nat-cgnat-bandwidth-and-practical-tunneling
1•rastrian•15m ago•0 comments

Show HN: Jsonic – Python JSON serialization that works

https://medium.com/dev-genius/jsonic-python-serialization-that-just-works-3b38d07c426d
2•orrbenyamini•18m ago•1 comments

Ask HN: Would anyone pay for a social network with no ads or data harvesting?

1•neilfd•20m ago•2 comments

Show HN: OpenAPI-batch: library for batch execution of LLM requests

https://github.com/sireto/openapi-batch
1•spannercode•20m ago•0 comments

The Organists Improvising Soundtracks to Silent Films

https://www.newyorker.com/magazine/2025/12/29/the-organists-improvising-soundtracks-to-silent-films
2•fortran77•24m ago•1 comments

Somaliland in the News. A look back at this innovative country

https://hardcoresoftware.learningbyshipping.com/p/236-somaliland-in-the-news-a-look
1•rbanffy•25m ago•0 comments

FernUniversität in Hagen

https://www.fernuni-hagen.de/english/university/index.shtml
1•Tomte•27m ago•0 comments

Show HN: An immutable ostree-based Arch Linux image

https://github.com/myyc/vyy
2•mxxc•27m ago•0 comments

Versus app for publicly traded companies

https://puenteolambo.com/
1•suglus•28m ago•0 comments

Attention Please – Codex/Claude SKILL that alerts when a run ends or needs input

https://github.com/Mindgames/attention-please
1•Mindgames•30m ago•0 comments

Show HN: Create old-timey silent-film style caption cards

https://caption.joeldare.com
1•codazoda•31m ago•0 comments

Getting Started with Playdate on Ubuntu

https://sethmlarson.dev/getting-started-with-playdate-on-ubuntu
2•todsacerdoti•32m ago•0 comments

Show HN: Chat-DeepAI – DeepSeek pricing and getting-started guides (fan project)

https://chat-deepai.com/
1•addressGen•34m ago•1 comments

Pokémon Team Optimization

https://nchagnet.pages.dev/blog/pokemon-team-optimization/
1•nchagnet•37m ago•0 comments

Free TTS and STT that runs 100% locally via WebGPU

https://www.freevoicereader.com/
1•kcordoc•39m ago•1 comments

Virtualization: Theory to Silicon

https://pooladkhay.com/posts/virt-theory-silicon/
1•mamadipine•40m ago•0 comments

The Relentless Rise of YouTube

https://www.ft.com/content/9e75eeb8-b6e6-4a90-b015-2732fa9a8774
2•bookofjoe•42m ago•1 comments

V-NOC: An IDE that shows you how your code works, not just where it's saved

https://github.com/v-noc/IDE
1•mellosouls•43m ago•1 comments

Nathalie Yamb

https://en.wikipedia.org/wiki/Nathalie_Yamb
1•hggh•43m ago•0 comments

OpenENF – tool to perform Electrical Network Frequency Analysis on audio signals

https://github.com/openenf/openenf
1•pera•45m ago•0 comments

AI Changes Science and Math Forever

https://www.quantamagazine.org/series/science-in-the-age-of-ai/
2•Anon84•51m ago•0 comments