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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/

Faster Bundler

https://railsatscale.com/2026-03-09-faster-bundler/
1•hahahacorn•1m ago•0 comments

Big Pork attacks California law on caging

https://www.latimes.com/politics/newsletter/2026-03-12/chabria-column-pig-confinement-pork-califo...
1•bilsbie•1m ago•0 comments

A DOGE bro left Social Security with 500M records on a drive and expected pardon

https://www.techdirt.com/2026/03/11/a-doge-bro-allegedly-walked-out-of-social-security-with-500-m...
1•spenvo•1m ago•0 comments

How to Run Local LLMs with Claude Code (Unsloth)

https://unsloth.ai/docs/basics/claude-code
1•armcat•1m ago•0 comments

AI assistants now equal 56% of global search engine volume

https://searchengineland.com/ai-assistants-global-search-engine-volume-study-471118
1•gmays•2m ago•0 comments

What is the strongest open source model for coding against Opus 4.6?

2•eeko_systems•6m ago•0 comments

Whole-Brain Connectomic Graph Model Enables Whole-Body Locomotion Control in Fly

https://arxiv.org/abs/2602.17997
2•sosodev•7m ago•0 comments

Patience – 3Sec Hold Game:)

https://3sec.site/
2•casultra•8m ago•2 comments

Show HN: Homecastr - AI home price forecasts on a map

https://www.homecastr.com/
2•dhardestylewis•8m ago•0 comments

Show HN: DevNode.studio, 100% local dev tools to make back end work faster

https://www.devnode.studio/
2•nyosef26•8m ago•1 comments

Brex tests agents: by committing fraud

https://www.brex.com/journal/articles/simulation-testing-ai-audit-agent
3•brandonbloom•13m ago•0 comments

Cryo FAQ

https://notebook.ldeming.com/whyilovecryo/
3•sebg•13m ago•0 comments

AI Slop: A Slack API Rate Limiting Disaster

https://code.dblock.org/2026/03/12/ai-slop-a-slack-api-rate-limiting-disaster.html
2•dblock•14m ago•0 comments

"You're Right"- What if you gave a web dev from 2006 Claude Code?

https://wiredsis.medium.com/youre-absolutely-right-2f4281e0f950
2•chess•14m ago•0 comments

Illinois introduces OS-level age verification law

https://legiscan.com/IL/bill/SB3977/2025
19•rickcarlino•15m ago•3 comments

Sam Altman Says Intelligence Will Be a Utility

https://gizmodo.com/sam-altman-says-intelligence-will-be-a-utility-and-hes-just-the-man-to-collec...
3•cdrnsf•16m ago•1 comments

Now Is the Time to Eat Their Lunch

https://rodyne.com/?p=3875
2•boznz•17m ago•1 comments

Tanker Sea Owl I Boarded in the Baltic Sea

https://polisen.se/aktuellt/nyheter/nationell/2026/mars/tanker-sea-owl-i-boarded-in-the-baltic-sea/
2•madspindel•18m ago•0 comments

A 4 byte file can bypass permissions in a GraphQL package used for payments

https://medium.com/@caplanmaor/prototype-pollution-in-graphql-upload-minimal-cve-2025-65587-a8648...
2•BambaNugat•18m ago•1 comments

Code Quality in the Age of Coding Agents

https://michaeltimbs.me/blog/code-quality-in-the-age-of-coding-agents/
2•alpaylan•18m ago•0 comments

Ask HN: Does code style matter much anymore?

3•travisgriggs•22m ago•2 comments

DirectX: Bringing Console-Level Developer Tools to Windows

https://devblogs.microsoft.com/directx/directx-bringing-console-level-developer-tools-to-windows/
4•haunter•22m ago•0 comments

DIY: Enigma Machine from a Toilet Paper Tube

https://www.flyingpenguin.com/build-your-own-mini-enigma-machine-from-a-toilet-paper-tube/
2•rolph•23m ago•0 comments

Jones Act Enforcer

https://offshoremarine.org/page/JonesActEnforcer
2•signorovitch•23m ago•1 comments

Turn your best X posts into a portfolio people can browse

https://curio-brown.vercel.app
3•NachikethRamesh•24m ago•0 comments

Women of the Flemish Golden Age

https://news.artnet.com/art-world/meet-the-forgotten-women-of-the-flemish-golden-age-2751227
3•petethomas•24m ago•0 comments

Show HN: Stratum – SQL that branches and beats DuckDB on 35/46 1T benchmarks

https://datahike.io/notes/stratum-analytics-engine/
4•whilo•27m ago•1 comments

Show HN: I rebuilt the "similar movies/TV shows" algorithm on TasteFinder

https://tastefinder.io/
3•tastefinder_io•31m ago•0 comments

Killing the Serialization Tax: 1M Entity Ingestion in 11.8µs with C#

https://intelligentaudio.net/nexus-pulse
2•NexusCore•31m ago•1 comments

Safari web browser bugs: A year in review

https://lapcatsoftware.com/articles/2026/3/6.html
2•zdw•32m ago•0 comments