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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Social media use/mental wellness links in youth are artifact of other factors [pdf]

https://www.christopherjferguson.com/Brainwaves.pdf
1•mpweiher•2m ago•0 comments

Agentic Engineering Patterns

https://simonwillison.net/guides/agentic-engineering-patterns/
1•vinhnx•7m ago•0 comments

Might Be the Most Underrated Resource for Early Stage Founders

1•vibecoder21•10m ago•0 comments

Kakveda open source-level AI, Infra observability agent

https://www.kakveda.com/
1•prateekdalal•10m ago•1 comments

What Is It That Makes Today's Homes So Different, So Appealing?

https://smarthistory.org/richard-hamilton-just-what-is-it/
1•Torwald•11m ago•0 comments

How LDAP Works

https://growingswe.com/blog/ldap
1•vismit2000•12m ago•0 comments

How you invent math: From counting to complex numbers

https://growingswe.com/blog/inventing-math
1•vismit2000•12m ago•0 comments

Stop Burning Your Context Window – How We Cut MCP Output by 98% in Claude Code

https://mksg.lu/blog/context-mode
1•mksglu•13m ago•1 comments

Zerobyte

https://github.com/nicotsx/zerobyte
1•Erenay09•14m ago•0 comments

Researchers praise 'stunning' results of new prostate cancer treatment

https://www.theguardian.com/society/2026/feb/28/researchers-praise-stunning-results-of-new-prosta...
2•sandebert•15m ago•0 comments

Robotic Land Drone holds positions in Ukraine frontline for 45 days

https://www.youtube.com/watch?v=JMTSH1U44cw
2•lifeisstillgood•21m ago•0 comments

The Missing Piece of AI Discourse Is Trust

https://philipptanlak.com/the-missing-piece-of-ai-discourse-is-trust/
1•philippta•22m ago•0 comments

Modula-2

https://en.wikipedia.org/wiki/Modula-2
3•tosh•25m ago•0 comments

US Customs destroy a rare floppy disk containing demo version of Tsukihime

https://www.timeextension.com/news/2026/02/literally-crying-right-now-50-copies-of-this-adult-onl...
2•FMecha•26m ago•0 comments

ErsatzTV Has Been Archived

https://github.com/ErsatzTV/ErsatzTV/issues/2839
1•kassner•26m ago•0 comments

The Ml.energy Leaderboard

https://ml.energy/leaderboard/
1•kgolubic•28m ago•0 comments

Jeffrey Epstein saw promise in Bitcoin – and its far-right supporters

https://www.theverge.com/tech/885252/jeffrey-epstein-bitcoin-cryptocurrency-connections
1•robtherobber•31m ago•0 comments

Surface-Stable Fractal Dithering

https://runevision.com/tech/dither3d/
1•fanf2•32m ago•0 comments

Show HN: I Turned My CV into a Space Invaders Game (Rust and WASM)

https://breezko.dev
1•breezk0•33m ago•0 comments

Show HN: JobSeek Expat – a CLI tool to scrape English speaking jobs on LinkedIn

https://github.com/electricalgorithm/jobseek-expat
2•gyokhan•37m ago•0 comments

Accuracy vs. Speed in Local LLMs: Finding Your Sweet Spot

https://grigio.org/accuracy-vs-speed-in-local-llms-finding-your-sweet-spot/
1•grigio•39m ago•0 comments

Silent March (2021)

https://tobiaskucera.art/en/tichy-brezen/
1•theobias•40m ago•0 comments

Nano Banana 2 AI Image Generator – Pro Quality, Flash Speed

https://veevid.ai/nano-banana-2
1•jacksteven•40m ago•0 comments

Czinger 21C review: flat out in America's £1.6M, 3D-printed hypercar

https://www.topgear.com/car-reviews/czinger/21c/first-drive
1•teleforce•42m ago•0 comments

Ask HN: Is Electronic Data Interchange still used in e-commerce?

1•shivajikobardan•43m ago•1 comments

Orbit – Diagnose why your robot policy fails and what data to collect next

https://github.com/Rahillasne/Orbit
1•rahillasne•44m ago•1 comments

Iran is in near-total internet blackout

https://mastodon.social/@netblocks/116147264437940657
6•us321•46m ago•0 comments

Ask HN: Is This Start of the End?

4•FrankSaaSDev•46m ago•2 comments

Show HN: Brandomica – Check if a brand name is safe to launch 1n one search

https://www.brandomica.com
1•brandomica•47m ago•0 comments

Django-Bolt: High-Performance Typed API Framework for Django

https://github.com/dj-bolt/django-bolt
1•0x1997•50m ago•0 comments