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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

How to Install and Start Using LineageOS on Your Phone

https://lockywolf.net/2026-02-19_How-to-install-and-start-using-LineageOS-on-your-phone.d/index.html
1•todsacerdoti•35s ago•0 comments

Lise Meitner's Nuclear Vision

https://www.historytoday.com/archive/great-debates/lise-meitners-nuclear-vision
1•samizdis•3m ago•0 comments

Where things stand with the Department of War

https://www.anthropic.com/news/where-stand-department-war
1•surprisetalk•3m ago•0 comments

Third Kairos (Space One) launch fails

https://spacenews.com/third-kairos-launch-fails/
1•HardwareLust•3m ago•0 comments

The FCC Wants Your Next Customer Service Agent to Be in the U.S.

https://www.wsj.com/business/telecom/the-fcc-wants-your-next-customer-service-agent-to-be-in-the-...
1•petethomas•4m ago•1 comments

Show HN: Multicorn Shield – Open-source permissions and approvals for AI agents

https://github.com/multicorn-ai/multicorn-shield
1•rachelle-r•7m ago•1 comments

Vet

https://github.com/imbue-ai/vet
1•handfuloflight•7m ago•0 comments

Self-Learning Customer Engagement

1•davismartens•8m ago•0 comments

Show HN: Ghoten – OpenTofu fork with ORAS back end for state in OCI registries

https://github.com/vmvarela/ghoten
1•vmvarela•11m ago•1 comments

Obfuscated C – Wordle hard mode solver

https://www.ioccc.org/2024/burton/index.html
1•coldsunrays•13m ago•1 comments

Remembering Mayhem

https://blog.metabrainz.org/2026/03/05/remembering-mayhem/
2•brw•13m ago•0 comments

Au Revoir, Eleventy

https://hamatti.org/posts/au-revoir-eleventy/
1•birdculture•14m ago•0 comments

Show HN: Claw Messenger, Text OpenClaw over iMessage Without a Mac Mini

https://www.clawmessenger.com/
2•demegire•15m ago•0 comments

Stackoverflow (Beta)

https://beta.stackoverflow.com/
2•AznHisoka•17m ago•0 comments

Investor Sam Lessin likens Iran war to Purim, the murder of 75,000 Persians

https://twitter.com/lessin/status/2029663841181979097
2•gravisultra•20m ago•1 comments

Gog – Google in Your Terminal

https://gogcli.sh/
1•atkrad•21m ago•1 comments

The nightmare war scenario is becoming reality in energy markets

https://www.economist.com/finance-and-economics/2026/03/03/the-nightmare-war-scenario-is-becoming...
5•petethomas•21m ago•1 comments

Context Engineering

https://github.com/m727ichael/context-engineering
1•m727ichael•22m ago•0 comments

Tracking Apple's Environmental Claims Across Product Generations

https://tostracker.app/entity/apple-inc/environment
1•tldrthelaw•24m ago•0 comments

GZOO Cortex – local-first knowledge graph that watches your project files

https://github.com/gzoonet/cortex
1•gzoo•24m ago•0 comments

LinguaKin is an offline-first, non-addictive language encyclopedia for polyglots

https://play.google.com/store/apps/details?id=com.linguakin.app&hl=en_US
1•mwveliz•26m ago•0 comments

FARS: Automated Research System

https://analemma.ai/fars
1•xiaoyu2006•26m ago•0 comments

Xiaomi Vision Gran Turismo Makes Global Debut at MWC Barcelona 2026

https://www.mi.com/global/discover/article/
1•gnabgib•27m ago•0 comments

The Editor Who Helped Build a Golden Age of American Letters

https://newrepublic.com/article/205583/editor-helped-build-golden-age-american-letters
1•samclemens•28m ago•0 comments

Can the Most Abstract Math Make the World a Better Place?

https://www.quantamagazine.org/can-the-most-abstract-math-make-the-world-a-better-place-20260304/
1•pseudolus•31m ago•0 comments

Minivum (mini-Vim)

https://ojhaugen15.github.io/minivum/
1•programmexxx•32m ago•0 comments

Temporal drives demand for Durable Execution – Temporal

https://temporal.io/blog/temporal-raises-usd300m-series-d-at-a-usd5b-valuation
1•atkrad•34m ago•0 comments

Show HN: Sick Clock" by Obeo – Predict your next sick day

https://apps.apple.com/us/app/obeo-forecast-your-health/id6754228624
2•jasnoor111•34m ago•2 comments

World Monitor – Real-Time Global Intelligence Dashboard

https://www.worldmonitor.app/
1•colinprince•35m ago•0 comments

Oracle plans job cuts as data center costs rise, Bloomberg News reports

https://www.reuters.com/business/oracle-plans-thousands-job-cuts-data-center-costs-rise-bloomberg...
5•nis0s•35m ago•1 comments