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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/

1•Nebyl•31s ago

Cloudflare Supports Vite's Mission

https://vite.dev/blog/cloudflare-supports-vite
1•kozika•49s ago•0 comments

127.0.0.1 in eight headers: what attackers hide in X-Forwarded-For

https://honeylabs.net/blog/what-attackers-hide-in-forwarding-headers
1•Robbedoes•1m ago•0 comments

I just hacked fractionalized NFTs and onchain bonds

https://page.twentythreeinreverse.com/
1•bryonyoni•2m ago•0 comments

Bloom – Beautifull Disk Space Cleaner (Free for Limited Time)

https://apps.apple.com/us/app/bloom-disk-space-cleaner/id6775048425?mt=12
1•KafKev•2m ago•0 comments

Bread made from yeast of Ötzi the Iceman's yeast, a 5,300 year old mummy

https://www.livescience.com/archaeology/it-was-very-very-good-otzi-the-icemans-body-is-covered-in...
1•gmays•4m ago•0 comments

Less than 4% Australians trust AI companies

https://www.abc.net.au/news/2026-06-04/artificial-intelligence-australians-trust-survey-pope-leo-...
1•soundworlds•4m ago•0 comments

The Return of Soft Skills in the Age of GenAI and Agentic Software Development

https://cacm.acm.org/blogcacm/the-return-of-soft-skills-in-the-age-of-genai-and-agentic-software-...
1•tchalla•5m ago•0 comments

The Last Engineer – Player Piano and the Automation of Purpose

https://readgrounded.com/episodes/004-player-piano/
1•readgrounded•5m ago•0 comments

Outlanders, Raleigh's Self-Governed Homeless Community

https://indyweek.com/news/inside-outlanders-raleighs-self-governed-homeless-community/
1•js2•5m ago•0 comments

Show HN: HetGuard – Automated backup scheduling for Hetzner Cloud

https://hetguard.com/
2•therov•5m ago•0 comments

Show HN: Hello Inbox – Your AI Email Deliverability Expert, Available 24/7

https://www.helloinbox.email/
2•ismaelyws•6m ago•0 comments

Designing a Better Podcast Editor

https://www.adamsolove.com/ui/ducking/2026/06/03/better-podcast-ui.html
1•robenkleene•6m ago•0 comments

Pairing AI with Optical Device to Correct Distorted Light for Sharper Imaging

https://qi.ucsd.edu/uc-san-diego-team-pairs-ai-with-tiny-optical-device-to-correct-distorted-ligh...
1•geox•7m ago•0 comments

Counterfactuals

https://colinmcginn.net/counterfactuals/
1•speckx•10m ago•0 comments

Ask HN: What happens when humans become as dumb as AI?

2•h45x1•10m ago•0 comments

Brighton Seafront Death Toll Increases

https://mttv.substack.com/p/brighton-seafront-death-toll-increases
1•GDNews503AD•11m ago•0 comments

Knoebels Amusement Resort celebrates 100 years of free admission in 2026

https://www.foxnews.com/travel/nearly-100-years-later-beloved-amusement-park-still-refuses-charge...
2•Tomte•11m ago•0 comments

A most musical traffic stop

https://soundcloud.com/luke-schenk/june-30th-2025
1•LukeDSchenk•12m ago•0 comments

Only 35 domains link to all 8 of the top project management tools

https://crawlgraph.com/blog/who-links-to-every-project-management-tool
1•pucilpet•12m ago•0 comments

Show HN: GrayCloud – a modern Dark Sky alternative

https://graycloud.app/
3•b1akely•13m ago•0 comments

Show HN: Foodpanda skill to automate ordering through Chrome

https://github.com/javaid-codes/foodpanda-fruit-order-skill/tree/main
2•WasimBhai•13m ago•0 comments

A16Z's global mission (by Ben Horowitz)

https://www.a16z.news/p/a16zs-global-mission
1•7777777phil•14m ago•0 comments

CIFSswitch – local privilege escalation vulnerability

https://heyitsas.im/posts/cifswitch/
1•axbyte•15m ago•1 comments

What Columbus used instead of the North Star

https://signoregalilei.com/2026/05/24/what-columbus-used-instead-of-the-north-star/
2•surprisetalk•15m ago•0 comments

Ask HN: Gin Rummy Strategies

1•bix6•16m ago•0 comments

Lufthansa Boeing 787-9 suffers nose gear collapse at Frankfurt Airport

https://www.aviation24.be/airlines/lufthansa-group/lufthansa/boeing-787-9-herne-suffers-nose-gear...
1•N19PEDL2•18m ago•0 comments

The Alignment Layer

https://hassenchaieb.com/ai-org-layers/
1•hac96•19m ago•1 comments

Spatial codebase explorer with refactor forecasts – no LLMs

https://code-atlas.up.railway.app
2•SeifPetit•21m ago•0 comments

I built an app thats designed to be closed

https://apps.apple.com/us/app/kwesti-3things/id6770004221
1•victoirrr•22m ago•2 comments