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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/

Show HN: War365 – Satire

https://war365.yatesframe.com/
1•beernutz•35s ago•0 comments

NOOP – Offline Whoop Companion App

https://github.com/ryanbr/noop
1•jgx0•1m ago•0 comments

Drawing electricity from this sodium-water reactor prevents explosion, in theory

https://www.youtube.com/watch?v=l0qqUE1pgXU
1•fallinditch•5m ago•0 comments

Religious Scholars Met with Anthropic. What They Heard Stunned Them

https://www.nytimes.com/2026/09/29/us/anthropic-claude-morals-ai.html
2•kanamekun•5m ago•1 comments

Did Iran Just Use Russia's "Kalinka" System on Starlink? (January 20, 2026)

https://nationalinterest.org/blog/buzz/did-iran-just-use-russias-kalinka-jamming-system-starlink-...
2•rexbee•7m ago•0 comments

Show HN: Yantra – an LALR(1) parser generator for C++

https://github.com/TantrixAuto/yantra
2•renjipanicker•12m ago•0 comments

XTechHumanoid winners advance military exploration of humanoid capabilities

https://www.war.gov/News/News-Stories/Article/Article/4613847/robotics-competition-winners-advanc...
1•lelandfe•12m ago•0 comments

Side Injection Test – Longshot Space [video]

https://www.youtube.com/watch?v=tbj0yfNz4_I
1•pinnola•12m ago•0 comments

Cities Are Forced to Funnel License Plate Data to a Federal Surveillance Program

https://www.404media.co/how-cities-are-forced-to-funnel-license-plate-data-to-a-massive-federal-s...
6•ripe•16m ago•0 comments

Gold beetles to Darwin's finds: The 70M museum artefacts going online

https://www.bbc.com/news/articles/cv5yjgrj4ello
1•1659447091•21m ago•0 comments

The main purpose of Z-Library is to enhance the level of education of everyone

https://z-lib.gd/fundraising
1•Cider9986•22m ago•0 comments

Follower counts don't equal search visibility – vetting creators before ad buys

https://hikerapi.com/
1•yumrbeats•25m ago•0 comments

8 Questions about Minds and AI

https://www.echohive.ai/eight-questions-about-minds-and-ai
1•echohive42•26m ago•0 comments

Aw1-breaker: Sub-0.02ms AST circuit breaker for Python AI agent tools

https://github.com/MvikManners/aw1-circuit-breaker
1•MvikVela•28m ago•0 comments

Show HN: I built a directory to set up ChatGPT's always-on agents in one paste

https://dotbotdirectory.com
1•iamdemetrius•29m ago•0 comments

Claude's new auto eval tool

https://hamel.dev/blog/posts/claude-auto-evals/index.html
3•hamelsmu•29m ago•0 comments

Google's AI Push into Schools: 'It Slowed My Thinking Down'

https://www.wsj.com/tech/ai/google-ai-gemini-education-schools-1ec0972a
1•alexpetralia•30m ago•0 comments

Jevotron: Multiple Jev integrations from the command line

https://cmungall.github.io/jevotron/
1•chrismungall•30m ago•0 comments

Show HN: I built Goodreads for startup founders (with Grok)

https://founderread.com/
1•westche2222•32m ago•0 comments

Using a chat widget in California is considered wiretapping (still)

https://www.getprivisy.com/blog/sb-690-cipa-what-changed
1•patrickwdaly•32m ago•1 comments

D2B – Spreadsheets for AI Agents

https://d2b.dev/developers
1•keikubo•34m ago•0 comments

Why transcription quality fluctuates (and how to fix it)

https://wisprflow.ai/post/transcription-quality
2•sleepypandas•38m ago•0 comments

Structuring Tokenized Equity Securities

https://www.geronimo.law/newsletter/structuring-tokenized-equity-securities
1•blitzball•39m ago•0 comments

I built a reproducible AI dev VM so engineers can skip setup hell

https://github.com/niemenghui/stAI-dev-machine
1•niemenghui•39m ago•0 comments

Ask HN: What's a good title for a software engineer now?

1•type4•39m ago•3 comments

Pete Hegseth appoints Elon Musk to US taskforce on future of warfare

https://www.theguardian.com/technology/2026/sep/30/pete-hegseth-elon-musk-taskforce-warfare
7•totetsu•41m ago•3 comments

Show HN: Paintlustrator – a free iPad app to draw and export SVGs

https://www.paintlustrator.fun
1•maytc•42m ago•1 comments

HBM: High-Bandwidth Mistake

https://irrationalanalysis.substack.com/p/hbm-high-bandwidth-mistake
3•gok•43m ago•0 comments

Show HN: ASM Bots – Core War in real 8086 machine code

https://asmbots.io/
1•pedramamini•45m ago•0 comments

Evolving Candela City – Supertuxkart Blog

https://blog.supertuxkart.net/2026/09/evolving-candela-city.html
1•bariumbitmap•45m ago•1 comments