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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/

The Commanding Heights

https://commanding-heights.com/
1•ray__•5m ago•0 comments

Php2bitcoin x brotli2bitcoin: live hacking stream [video]

https://www.youtube.com/watch?v=w7_EJWqRzvw
2•darkport•11m ago•1 comments

New 3D thermal invisibility cloak makes objects disappear from infrared cameras

https://www.sciencedaily.com/releases/2026/10/261025073051.htm
1•stevenalowe•12m ago•0 comments

Solnix – distribution of Illumos built with Nix packages and NixOS modules

https://solnix.io/
1•ai_critic•14m ago•0 comments

Ambition in the Age of AI

https://aumitleon.dev/ambition-in-the-age-of-ai
1•aumitleon•19m ago•0 comments

The Four Academics Who Dreamed Up California's Billionaire Tax

https://www.wsj.com/finance/the-four-academics-who-dreamed-up-californias-billionaire-tax-b0d05dcc
1•bryan0•19m ago•0 comments

Claim – Humanity vs. the Machine

https://theaigame.app/
1•dogsica•32m ago•0 comments

Reddit to Transition to Logged in Only

https://www.axios.com/2026/10/29/reddit-logged-in-ai-search-incognito
5•ksajadi•32m ago•3 comments

Show HN: 100% automated tech deal site (built with Grok bot)

https://gadgetsteal.com/
1•westche2222•33m ago•0 comments

The hard problem of AI therapy

https://www.theseedsofscience.pub/p/the-hard-problem-of-ai-therapy
1•mday404•33m ago•0 comments

How to See What's Taking Up Space on Your Mac

https://crufti.app/blog/see-whats-taking-up-space-on-mac
1•gbourne•35m ago•0 comments

AGI Economics: Coordination vs. Competence

https://institute.deepmind.com/essays/the-economics-of-intelligence/
2•simonpure•43m ago•0 comments

Defect vs. Discrepancy vs. Missed Requirement

1•LandOfMightDev•46m ago•0 comments

CVE-2026-98432: Linux TCP Use-After-Free Risk and Patch Validation

https://www.penligent.ai/hackinglabs/cve-2026-98432/
2•cobychapple•46m ago•0 comments

Mostly PHP, and Mostly Unaffected

https://blog.leonbecker.de/mostly-php-and-mostly-unaffected/
1•rowbin•49m ago•0 comments

Pg_lake 3.5: Universal Iceberg REST Catalog Support for Postgres

https://www.snowflake.com/en/blog/engineering/pg-lake-iceberg-rest-catalog/
3•winslett•58m ago•0 comments

Searching for Jobs, Gen Z Feels Like It's Staring into 'The Void'

https://www.nytimes.com/interactive/2026/10/28/style/gen-z-job-market.html
3•reasonableklout•1h ago•1 comments

How I Built the Most AI-Pilled Company in the World

https://x.com/jsnnsa/status/2115623382721126826?a=fjiH4cVowfsIKfO0urI&s=46
1•tangled•1h ago•1 comments

Pgrust: Gravity Query Engine

https://pgrust.com/blog/programming-at-light-speed/
4•camuel•1h ago•0 comments

Elephant-goldfish-model: skills for designing and reviewing software with agents

https://github.com/google/elephant-goldfish-model
1•simonpure•1h ago•0 comments

GitHub Copilot Fusion orchestrates between models at half the cost

https://twitter.com/ArtificialAnlys/status/2115477376981508419
4•nreece•1h ago•0 comments

Show HN: Lasm – Write formally verified webapps in Lean for Node/serverless/edge

https://github.com/Millillion/lasm
7•lastmjs•1h ago•0 comments

A new way of life: Minsnap-Save reels to notes

https://play.google.com/store/apps/details?id=com.morma&hl=en_US
1•thepolyformstud•1h ago•0 comments

Show HN: Tiberava – My Game is growing

https://tiberava.online
8•tarsomykonos•1h ago•1 comments

Show HN: MadTracker – Scoring software for track cycling races

1•c0nsumer•1h ago•0 comments

Pico CSS is no longer maintained

https://github.com/picocss/pico/discussions/754
44•henrid•1h ago•15 comments

Google eng is sure AI will destroy humanity he's stopped saving for retirement

https://finance.yahoo.com/technology/ai/articles/former-google-engineer-sure-ai-103000827.html
3•cramer4next•1h ago•1 comments

Herdr releasing herdr-core and desktop app

https://herdr.dev/core/
1•y1zhou•1h ago•2 comments

Binance's possible hack triggers $3B freeze in crypto assets

https://www.reuters.com/legal/transactional/tether-circle-freeze-238-billion-after-binance-report...
3•onemoresoop•1h ago•2 comments

How Open Source Communities Help Respond Quickly to Security Risks

https://openteams.com/engineering-blog/emudhra-pip-install-hijacked/
1•travisoliphant•1h ago•0 comments