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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

The Federal Data Field Guide

https://www.federaldatafieldguide.us/
1•sebg•36s ago•0 comments

Deutsche Bahn: No information under Linux

1•qwertox•1m ago•0 comments

Matterhorn pandas

https://mz.prose.sh/matterhorn-pandas
1•manuelz•1m ago•0 comments

Magic the Gathering format: Fun 40

https://fabiensanglard.net/mtg/fun//index.html
1•ibobev•2m ago•0 comments

Second Quantisation – A Quantisation Too Far

https://www.forwardscattering.org/page/Second%20Quantisation
1•ibobev•3m ago•0 comments

Ma Configuration SSH · Accueil

https://rodolphe.breard.tf/article/ma-config-ssh/
1•rodrigo975•3m ago•0 comments

My 1993 Atari Mega STE Retro Battlestation

https://www.goto10retro.com/p/my-1993-mega-ste-retro-battlestation
1•ibobev•3m ago•0 comments

Anthropic to open Milan office, expanding push into Europe

https://finance.yahoo.com/sectors/technology/articles/anthropic-open-milan-office-expanding-09502...
1•napolux•4m ago•0 comments

AVX-512 Optimization for FFmpeg Shows Wild Improvement on AMD Ryzen (2025)

https://www.phoronix.com/news/FFmpeg-AVX-512-uyvytoyuv422
1•tosh•4m ago•0 comments

Nvidia says it has 'largely conceded' China's AI chip market to Huawei

https://www.cnbc.com/2026/05/21/nvidia-jensen-huang-china-ai-chip-market-huawei.html
1•Markoff•5m ago•0 comments

Yet another " fastest hashing algorithm"

https://github.com/rrrlasse/intrinhash
1•rlasse•6m ago•1 comments

European Salary Calculator – net pay after tax for PT/ES/UK/DE/NL (2026)

https://www.eunetsalarycalculator.com/
1•coubes•10m ago•0 comments

QuestDB 9.4.0

https://questdb.com/blog/questdb-9-4-0-release/
1•tosh•10m ago•0 comments

Toxiflow – an execution layer that measures fill toxicity

https://github.com/SO2304/toxiflow
1•so2304•10m ago•0 comments

Show HN: Aisbf, a self-hostable OpenAI-compatible AI proxy/router

https://aisbf.cloud/
1•nextime•10m ago•0 comments

The third wave of American philanthropy

https://nanransohoff.substack.com/p/the-third-wave-of-american-philanthropy
1•gmays•11m ago•0 comments

LLM-mock – Record real LLM API responses once, replay them in tests forever

https://pypi.org/project/llm-mock/
1•roman_t•11m ago•0 comments

Playwright CI: What Senior Engineers Do Differently

https://bdr-methodology.dev/blog/what_senior_engineers_do_differently_pro/
1•dmitryaqa•12m ago•0 comments

Gemini randomly dumped its system prompt

https://gist.github.com/mkaramuk/44a44d83178e632ec0dd1f02186d822c
5•mkaramuk•12m ago•0 comments

How These Doctors Keep Brains Going After Death

https://www.youtube.com/watch?v=IzUuvlCjHC4
1•_tk_•15m ago•0 comments

The Effects of School Phone Bans: National Evidence from Lockable Pouches

https://siepr.stanford.edu/publications/working-paper/effects-school-phone-bans-national-evidence...
1•mooreds•16m ago•0 comments

Anthropic's New Consulting Venture Makes Its First Acquisition

https://www.bloomberg.com/news/articles/2026-05-21/anthropic-s-new-consulting-venture-makes-its-f...
6•atomon•16m ago•0 comments

A text adventure game about the joys of submitting updates to the App Store

https://approval.quest/
1•zgoldie•18m ago•0 comments

A Bipartisan Amendment Would End Police License Plate Tracking Nationwide

https://www.wired.com/story/a-bipartisan-amendment-would-end-police-license-plate-tracking-nation...
1•cdrnsf•18m ago•0 comments

AISA

https://aisa.to
2•Ozanagdeviren•18m ago•0 comments

Show HN: I Dedicated 4 Years to Mastering Offline Password Cracking

1•bojta-lepenye•19m ago•0 comments

Air France and Airbus guilty of corporate manslaughter for 2009 plane crash

https://www.theguardian.com/world/2026/may/21/air-france-airbus-guilty-corporate-manslaughter-200...
1•victortalkstech•20m ago•0 comments

Who Wins and Who Loses in Prediction Markets? Evidence from Polymarket

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6443103
2•vcf•21m ago•1 comments

The Rise of Build-to-Rent Housing

https://www.construction-physics.com/p/the-rise-of-build-to-rent-housing
1•crescit_eundo•21m ago•0 comments

Can AI solve this Bongard problem?

https://imgur.com/a/idyH0Kh
1•Kotlopou•22m ago•1 comments