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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/

Is AI ruining my brain?

https://thoughtbot.com/blog/is-ai-ruining-my-brain
1•encyclopedism•23s ago•0 comments

Higher semaglutide dose associated with lower psych events ind. of weight loss

https://www.nature.com/articles/s44324-026-00131-3
1•jtc331•46s ago•0 comments

Blockchained

https://www.blockchainednovel.com/read.html
1•mck-•4m ago•0 comments

Spatiotemporal Composability and Cordis

https://spatiotemporal-composability.pages.dev/
1•srid•5m ago•0 comments

Good AI Slop

https://blog.bilus.dev/posts/good-ai-slop/
1•bilus•7m ago•0 comments

StoryScope: Investigating Idiosyncrasies in AI Fiction

https://arxiv.org/abs/2604.03136
1•efavdb•7m ago•0 comments

OKF Agent Memory – Git-native persistent memory for AI coding agents

https://github.com/okf-memory/okf-agent-memory
1•okf_memory•9m ago•0 comments

Nvidia Lambda Circular Deal [video]

https://www.youtube.com/shorts/II2BEkrJ2Zc
1•Betelbuddy•11m ago•0 comments

The Roadmap of Mathematics for Machine Learning

https://thepalindrome.org/p/the-roadmap-of-mathematics-for-machine-learning
2•gmays•12m ago•0 comments

Show HN: Twinrun – run old and new code on the same inputs, diff the outputs

https://github.com/prian3003/twinrun
1•satineeee•16m ago•0 comments

Falsehoods Programmers Believe About LANs

https://dreamstation.systems/personal/lanfalsehoods.html
1•robinpie•17m ago•0 comments

Breaking GitLab's GraphQL Layer: CVE-2026–19478 and CVE-2026–19650

https://medium.com/peakcyber/breaking-gitlabs-graphql-layer-cve-2026-19478-cve-2026-19650-acf16e4...
1•syumei•18m ago•0 comments

AI push is putting banks at mercy of tech firms, warns Moody's

https://www.theguardian.com/business/2026/aug/09/ai-push-banks-tech-firms-moodys-risks-financial-...
3•prmph•21m ago•0 comments

GPT-6 Astra: the harness is the product

https://fewshotacademy.com/blog/gpt-6-astra-the-harness-is-the-product
2•mangatgoyal•23m ago•0 comments

An LLM runtime that boots from USB

https://nightrun.io/
1•NickNaraghi•26m ago•0 comments

Biomimetic SNN simulator in pure Rust (zero-deps, lock-free parallelism)

https://github.com/strahinjastojanovic826-code/biomimetic-snn-rust
1•srbin•27m ago•0 comments

Nix: Life OS

https://github.com/sianachi/Nix
1•osinachi88•29m ago•0 comments

Tyranny of Optionality

https://hvpandya.com/tyranny-of-optionality
2•aray07•32m ago•0 comments

Apple's first foldable iPhone may cost $2k

https://finance.yahoo.com/markets/stocks/article/apples-first-foldable-iphone-may-cost-2000-11073...
2•evo_9•33m ago•0 comments

Russian Drones Forced Ukraine to Park Its M1 Abrams Tanks

https://www.twz.com/land/how-russian-drones-forced-ukraine-to-park-its-m1-abrams-tanks
4•cisc•37m ago•0 comments

America's Two Largest School Districts Impose AI Moratoriums

https://www.techpolicy.press/americas-two-largest-school-districts-impose-ai-moratoriums/
11•cdrnsf•42m ago•0 comments

Google AI turns on its maker in a brutally candid interview

https://newatlas.com/ai-humanoids/exclusive-google-ai/
3•cisc•47m ago•1 comments

Teaching Prevents Learning

https://mariusmanolachi.substack.com/p/why-teaching-can-prevent-learning
2•Marius_Manola•47m ago•0 comments

The revolt of the reader

https://bcantrill.dtrace.org/2026/09/05/the-revolt-of-the-reader/
7•chmaynard•47m ago•0 comments

The AI-Native SDLC Playbook

https://claude.com/blog/the-ai-native-sdlc-playbook
1•gmays•59m ago•0 comments

Afterword – a multiplayer remake of Word After Word

https://afterword.exe.xyz
1•indigodaddy•59m ago•1 comments

South African diamond mines are closing due to weak sales and lab-grown stones

https://www.wsj.com/business/diamond-mines-are-closing-and-south-africans-have-few-alternatives-f...
9•bookofjoe•1h ago•3 comments

Obscura: Native rendering is here. No Chromium required

https://github.com/h4ckf0r0day/obscura
3•partsch•1h ago•0 comments

Show HN: Virtual photoshoot for guys who dislike having their pic taken

https://vibeflirting.com/
2•Ritjert•1h ago•0 comments

Researchers Spot Fake Ancient Pottery Using the Earth's Magnetic Field

https://www.smithsonianmag.com/smart-news/researchers-determine-how-to-spot-fake-ancient-pottery-...
3•cisc•1h ago•0 comments