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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Apple says 'random or anonymous chat' apps no longer welcome on the App Store

https://9to5mac.com/2026/02/06/apple-says-random-or-anonymous-chat-apps-no-longer-welcome-on-the-...
1•tcfhgj•25s ago•0 comments

Tether EVO Scores Top in Global AI Benchmark for Brain-to-Text AI Challenge

https://tether.io/news/tether-evo-scores-top-5-in-global-ai-benchmark-for-brain-to-text-ai-challe...
1•salkahfi•1m ago•0 comments

As AI takes over the act of "making," where do I go from here?

https://medium.com/@kohii/software-creation-replaced-by-ai-where-do-i-go-from-here-66f9869aa511
1•kohii•2m ago•1 comments

The Curious Genius of Amar Bose

https://www.popsci.com/science/article/2013-07/curious-genius-amar-bose/
1•samdung•2m ago•0 comments

Show HN: I built a Telegram bot that converts any article URL to audio

https://sornic.com
1•digi_wares•4m ago•0 comments

How We Cut Our Cloudflare Worker Test Suite from 80s to 24s

https://stumpy.ai/blog/cloudflare-vitest-barrel-trick
1•bluesnowmonkey•4m ago•0 comments

No One, Including Furry Friends, Will Be Safer in Ring's Surveillance Nightmare

https://www.eff.org/deeplinks/2026/02/no-one-including-our-furry-friends-will-be-safer-rings-surv...
1•voxadam•4m ago•0 comments

HelpingLusers

http://meatballwiki.org/wiki/HelpingLusers
1•themaxdavitt•4m ago•0 comments

Why HN is a decade behind on crypto [video]

https://www.youtube.com/undefined
1•nailer•5m ago•0 comments

Prompting Best Practices for Instruction-Following Rerankers

https://www.zeroentropy.dev/articles/prompting-best-practices-for-instruction-following-rerankers
1•medbar•5m ago•0 comments

A Customizable Coding Agent: custom tools, Python API, and any local/cloud LLM

https://github.com/wiseprobe/patchpal
1•wiseprobe•6m ago•1 comments

Show HN: Automatic demo videos for every feature you ship

https://waitlist.buildshot.xyz/?source=HN
1•pratikpatwe•6m ago•0 comments

Why Your Agent Needs a Principles.md File

https://twitter.com/atlasforgeai/status/2021773566341988758
1•gmays•8m ago•0 comments

HanziFive – Daily HSK graded articles in Chinese

https://www.hanzifive.com/
1•vmeklis•9m ago•0 comments

Show HN: ShortGuard – Apple rejected my app for blocking Shorts, so here it is

https://testflight.apple.com/join/eTKmdWCU
1•justdodo•10m ago•0 comments

Show HN: Hacker Backlinks – Discover which HN stories are cited most in comments

https://hacker-backlinks.browserbox.io
2•keepamovin•12m ago•1 comments

Improving 15 LLMs at Coding in One Afternoon. Only the Harness Changed

http://blog.can.ac/2026/02/12/the-harness-problem/
2•kachapopopow•14m ago•0 comments

Show HN: Artificials – Why AI will create the next human civilization

1•brian_bae_kr•15m ago•0 comments

Why (Senior) Engineers Struggle to Build AI Agents

https://www.philschmid.de/why-engineers-struggle-building-agents
1•tosh•19m ago•0 comments

Rolling your own serverless OCR in 40 lines of code

https://christopherkrapu.com/blog/2026/ocr-textbooks-modal-deepseek/
1•mpcsb•20m ago•0 comments

Ask HN: What electrical engineering textbooks would you recommend?

1•el_oni•21m ago•0 comments

Interpol-backed police make nearly 200 arrests in Amazon gold mining sweep

https://news.mongabay.com/short-article/2026/01/interpol-backed-police-make-nearly-200-arrests-in...
1•PaulHoule•22m ago•0 comments

99%+ of new US capacity in 2026 will be solar, wind and storage

https://electrek.co/2026/01/28/eia-99-of-new-us-capacity-in-2026-will-be-solar-wind-storage/
1•andsoitis•23m ago•0 comments

Tool Shaped Objects

https://twitter.com/willmanidis/status/2021655191901155534
1•gmays•25m ago•0 comments

ClawCam was this a bad idea?

https://chrisdrake.com/ClawCam.png
1•cndg•26m ago•0 comments

Show HN: Browse any IP address like a profile page

https://ipdata.co/me
1•jonathan-kosgei•26m ago•0 comments

Show HN: IP ranges for 22 cloud providers in 12 formats, updated daily

1•rezmoss•27m ago•0 comments

Porting an INT8 VHDL CNN from Intel Agilex 3 to Lattice Certus-NX

1•smart_coconut•28m ago•0 comments

Run Pebble OS in Browser via WASM

https://ericmigi.github.io/pebble-qemu-wasm/
1•goranmoomin•28m ago•0 comments

Robotaxis and AI-Hardness (2022)

https://www.vangemert.dev/blog/robotaxis-and-AI-hardness
2•engelo_b•30m ago•0 comments