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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

1970 Plymouth Hemi 'CUDA

https://knuckledustchronicles.com/1970-plymouth-hemi-cuda/
1•frobinson47•4m ago•0 comments

A Jupiter-size planet that escaped its star's death

https://arstechnica.com/science/2026/07/a-jupiter-size-planet-that-escaped-its-stars-death/
1•pseudolus•6m ago•0 comments

Stellantis to sell small Fiat Topolino EV for $13,995 in U.S.

https://www.cnbc.com/2026/07/07/stellantis-fiat-topolino-ev.html
3•mattas•14m ago•1 comments

Vim of Coding Agents

https://rasyidanaf.com/blog/vim-of-coding-agents/
1•brutaljokerz•17m ago•0 comments

Unintentional information disclosure in LaTex Files submitted to arXiv

https://ieeexplore.ieee.org/document/11573440/
1•whym•26m ago•0 comments

Mouse cursor disappears when my refrigerator turns off

https://old.reddit.com/r/archlinux/comments/55pbqp/mouse_cursor_disappears_when_my_refrigerator/
1•polivier•28m ago•0 comments

Advertise in ChatGPT – OpenAI Ads

https://ads.openai.com/
5•hboon•30m ago•0 comments

Life among the garbage mountains of the biggest city

https://www.theguardian.com/world/ng-interactive/2026/jul/13/jakarta-trash-garbage-rubbish-bantar...
1•prawn•30m ago•0 comments

China, Russia and Others Seek to Inflame Debate over A.I. Data Centers

https://www.nytimes.com/2026/07/09/business/china-russia-ai-data-centers.html
4•lxm•32m ago•0 comments

Maps, Smaps and Memory Stats

https://jameshunt.us/writings/smaps/
2•snihalani•34m ago•0 comments

Show HN: Self-hosted voice AI agent for Asterisk/FreePBX

https://github.com/hkjarral/AVA-AI-Voice-Agent-for-Asterisk
1•hkjarral•35m ago•0 comments

Chinese voice actor forced to prove he's human against AI clones

https://www.sixthtone.com/news/1018753/TheChineseVoiceActorForcedtoProveHe’sHuman
1•whiteblossom•36m ago•1 comments

Live2D Body for Hermes Agent

https://github.com/Soundpulse/hermes-live2d
1•totallyscout•39m ago•1 comments

Japanese payment processor's collapse hits banks and restaurants

https://www.japantimes.co.jp/business/2026/07/08/companies/zentoshin-impact-restaurants/
2•mikhael•40m ago•0 comments

Thoughts on AI

https://jackpeplinski.bearblog.dev/thoughts-on-ai/
1•jackpep•43m ago•0 comments

CO2: Language backward compatible with C, with access to the Rust ecosystem

https://github.com/hkalbasi/co2/tree/main
1•Georgelemental•47m ago•0 comments

Six months daily driving Linux

https://interestingstuff.xyz/reviews/six-months-daily-driving-linux/
1•interestingstuf•47m ago•0 comments

Show HN: Baton - Know which of your AI coding agents needs you

https://github.com/neilkpatel/baton
1•nkp007•50m ago•0 comments

Show HN: Web App Uses RTL-SDR to Align HDTV Antenna

https://tunerscope.com/
1•robotastic•52m ago•0 comments

I tried 5 free image-to-ASCII converters so you don't have to

https://image-to-ascii.com/
1•LumisYY•59m ago•0 comments

That Is Load-Bearing

https://old.reddit.com/r/ClaudeAI/comments/1tob6q5/that_is_loadbearing/
3•varun_chopra•1h ago•0 comments

Frank Lloyd Wright's First Home

https://www.architecturaldigest.com/story/frank-lloyd-wright-home-and-studio-everything-you-need-...
1•NaOH•1h ago•0 comments

The cloud begins with coal (2013)

https://www.cepi.org/the-cloud-begins-with-coal-an-overview-of-the-electricity-used-by-the-global...
1•thelastgallon•1h ago•0 comments

What most histories get wrong about MUMPS's first standard

https://github.com/rochus-keller/MUMPS/blob/main/docs/First_MUMPS_Standard_Article.md
1•Rochus•1h ago•0 comments

Self-Improving Agent Systems: A Unified View

https://yigengjiang.github.io/posts/self_improving_agent_systems/
1•ygx•1h ago•0 comments

PC Emulator PCem Makes It to WebAssembly

https://github.com/va3jfl/PCem-WebAssembly
2•JoelLagace•1h ago•0 comments

mRNA vaccine targeting tick proteins induces tick resistance in guinea pigs

https://medicine.yale.edu/news-article/yale-researchers-advance-work-in-diagnosing-and-preventing...
4•DogOfTheGaps•1h ago•0 comments

Pg_re2: 9x faster regular expressions in Postgres

1•saisrirampur•1h ago•1 comments

Australian Consumer advocate calls for mandatory domestic mobile roaming

https://www.abc.net.au/news/2026-07-13/calls-for-mandatory-domestic-mobile-roaming-intensify/1068...
4•ggm•1h ago•0 comments

The Battle of Carrhae (53B.C.E.) [video[

https://www.youtube.com/watch?v=bR7VDPUj5AE
1•JumpCrisscross•1h ago•0 comments