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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: 2nd Release Canddiate for Back in Time 2.0.0

https://github.com/bit-team/backintime/releases/tag/v2.0.0-rc2
1•buhtz•10m ago•0 comments

How Delhi Built a World-Class Metro for a Bargain

https://www.nytimes.com/2026/09/02/headway/india-delhi-metro-public-transit.html
2•thunderbong•11m ago•0 comments

Show HN: A register of agent-payment code that pays once when the reply is lost

https://aurumflux.co/retry-safety/
1•aurumflux20•12m ago•0 comments

Gemini 3.8 Flash in Google Antigravity – Google Antigravity Blog

https://antigravity.google/blog/gemini-3-8-flash-in-google-antigravity
1•humphrey_liu•14m ago•0 comments

Claude Code skill: no emdashes

https://github.com/woutersf/claude-skill-no-emdashes
1•woutersf•17m ago•0 comments

Upload died on Mac air M5. Apple networking needs reboot

https://frederikwouters.be/blog/have-you-tried-turning-it-off-and-on-again
1•woutersf•18m ago•0 comments

CTTI is Exponential, RTTI is Linear

https://www.gingerbill.org/article/2026/09/02/ctti-is-exponential-rtti-is-linear/
1•thunderbong•18m ago•0 comments

Can AI Create PLC Attacks? Yes, but It's Not That Easy Yet

https://www.forescout.com/blog/can-ai-create-plc-attacks-yes-but-it%E2%80%99s-not-that-easy-yet/
1•Sentralis•20m ago•0 comments

The First Polynomial-Time Algorithm for the Győri-Lovász Theorem

https://arxiv.org/abs/2608.30945
1•pykello•22m ago•0 comments

RSA Factoring Challenge

https://en.wikipedia.org/wiki/RSA_Factoring_Challenge
1•nomilk•24m ago•0 comments

Which AI Fetchers Send Which Headers, Measured on a Live Site

https://gkoreli.com/which-ai-fetchers-send-which-headers
1•gogakoreli•24m ago•1 comments

An ongoing 3D-printer AGPL violation

https://lwn.net/Articles/1089390/
2•pykello•26m ago•0 comments

Creating Emacs Color Themes, Revisited

https://emacsredux.com/blog/2026/03/30/creating-emacs-color-themes/
1•signa11•27m ago•0 comments

Infrastructure quartermaster: inside a China-nexus state enablement model

https://www.lumen.com/blog/en-us/the-infrastructure-quartermaster-inside-a-china-nexus-state-enab...
1•Bluestein•31m ago•0 comments

Analysis: China's CO2 emissions fall in Q2 2026 due to plummeting oil use

https://www.carbonbrief.org/analysis-chinas-co2-emissions-fall-in-q2-2026-due-to-plummeting-oil-use
4•xbmcuser•31m ago•1 comments

Is This the Future of America?

https://www.theverge.com/cs/features/975597/loudoun-county-virginia-data-center-backlash
3•JSR_FDED•34m ago•1 comments

Ask HN: Advice on Migrating from 1Password?

4•0xbadcafebee•38m ago•3 comments

Musicians' brains stay one step ahead, study finds

https://www.ecu.edu.au/newsroom/articles/research/musicians-brains-stay-one-step-ahead-study-finds
1•XzetaU8•38m ago•0 comments

The multi-agent architecture of 2026 was designed in 1975

https://mozaik.jigjoy.ai/blog/the-interoperability-triangle
2•deepmem•40m ago•0 comments

Postgres 19 makes more of its internals observable

https://clickhouse.com/blog/postgres-19-new-system-views
1•saisrirampur•40m ago•0 comments

Cruz Enters the 2028 Conversation as Republican Succession Race Takes Shape

https://predx-article.fika.bar/cruz-enters-the-2028-conversation-as-republican-succession-r-01M1J...
1•joeymabia1•41m ago•1 comments

Uber to lay off 10% of staff in biggest cuts since Covid

https://www.reuters.com/business/world-at-work/uber-cut-3300-jobs-overhaul-bloomberg-news-reports...
1•artpar•43m ago•0 comments

Controlling CERN's Accelerators with Debian – MiniDebConf Winterthur 2026

https://ch2026.mini.debconf.org/talks/6-controlling-cerns-accelerators-with-debian/
1•rdmuser•48m ago•0 comments

What's going on with this platform? Why are links on Zenodo being flagged?

1•UJ-FLD-ScrTr•55m ago•0 comments

Misam Atshbar

1•omidggmh•56m ago•0 comments

Ex-Tension Alert

1•jackie_001•59m ago•0 comments

Years of Salt and Metal – The crash of Hop-a-Jet flight 823

https://admiralcloudberg.medium.com/years-of-salt-and-metal-the-crash-of-hop-a-jet-flight-823-665...
2•Lx1oG-AWb6h_ZG0•1h ago•0 comments

RSA-260 Factorized

https://twitter.com/penlume/status/2095372672356212876
4•samyok•1h ago•1 comments

My California Dream

https://twitter.com/garryslist/status/2094914114678034899
1•shinryudbz•1h ago•0 comments

Momentum Exchange Tether

https://en.wikipedia.org/wiki/Momentum_exchange_tether
1•tosh•1h ago•0 comments