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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 Highway Code: Using the road (Rules 159 to 203)

https://www.gov.uk/guidance/the-highway-code/using-the-road-159-to-203
1•susam•2m ago•0 comments

Show HN: Itara – Distributed system topology as an explicit, executable layer

https://github.com/itara-project/itara
1•gkiss0001•6m ago•0 comments

Data centres account for almost a quarter of Irish electricity usage in 2025

https://www.irishtimes.com/business/2026/07/07/data-centres-account-for-almost-one-quarter-of-iri...
1•1vuio0pswjnm7•7m ago•0 comments

Apple sues OpenAI and two former employees for alleged theft of trade secrets

https://www.irishtimes.com/technology/big-tech/2026/07/10/apple-sues-openai-and-two-former-employ...
1•1vuio0pswjnm7•8m ago•0 comments

The ChatGPT "Super App" Sort of Super Sucks

https://spyglass.org/chatgpt-gets-to-work/
1•soheilpro•10m ago•0 comments

New FIRE study finds narrowing range of political views among faculty donors

https://www.fire.org/news/new-fire-study-finds-narrowing-range-political-views-among-faculty-donors
3•like_any_other•11m ago•1 comments

Apple files lawsuit, accuses OpenAI of stealing trade secrets

https://www.cbc.ca/news/world/apple-lawsuit-open-ai-trade-secrets-9.7266470
1•1vuio0pswjnm7•12m ago•0 comments

Linux of AI open-source tools for reducing AI vendor lock-in

https://github.com/sekacorn/Linux-of-Ai
1•Saya24f•12m ago•0 comments

Visualization of the OpenAI Proof of the Cycle Double Cover Conjecture

https://blog.asrpo.com/cdc.html
1•asrp•13m ago•1 comments

This Factory was severely short on workers. Then it offered flexible work

https://www.npr.org/2026/07/08/nx-s1-5876084/manufacturing-flexible-part-time-work
1•andrewl•14m ago•0 comments

Undeniable proof that time travel is real

https://twitter.com/DataChaz/status/2076233674648088760
2•delichon•14m ago•0 comments

A BCI That Lasts 20 Years Requires Solving 4 Biological Problems

https://bioniclab.substack.com/p/what-would-a-bci-that-lasts-actually
1•u1hcw9nx•16m ago•0 comments

Show HN: A dark fantasy short story

https://lawfully.netlify.app/
1•darkhorse13•16m ago•0 comments

You can write docs in LLMese, but you don't have to

https://passo.uno/write-docs-llms-language/
1•theletterf•17m ago•0 comments

Show HN: Containix – Run Nix flakes as Kubernetes pods without images

https://containix.dev/
1•atmask•18m ago•0 comments

An new try: C++ like program with the same characteristics as rust

1•juntz•18m ago•0 comments

Indio Solari, Argentine Rocker Who Packed Stadiums, Dies at 77

https://www.nytimes.com/2026/07/06/arts/music/indio-solari-dead.html
1•bookofjoe•20m ago•1 comments

LLMs might not learn concepts

https://pastebin.com/w1HcfHvp
3•ffwd•21m ago•0 comments

Is vibe coding worth it? What the numbers say

https://okaneland.com/study/is-vibe-coding-worth-it/
1•ermantrout•21m ago•1 comments

Perfectly Hitting the Wrong Target: The Story of an AI Code Review Benchmark

https://shrsv.hexmos.com/post/perfectly-hitting-the-wrong-target
3•atomicnature•24m ago•0 comments

DNA signatures preserved in the 1978 sample collection of the Shroud of Turin

https://www.nature.com/articles/s41598-026-60684-7
2•alchemist1e9•25m ago•0 comments

Show HN: Introducing: Zotfile Agents

https://www.zot.sh/docs/zotfiles
6•patriceckhart•30m ago•0 comments

Latest Debian 12 update opens MariaDB server to the internet

2•babuskov•31m ago•0 comments

There are only bad reasons not to have a good demo

https://carom.io/notes/no-excuse-for-a-bad-demo/
2•dpc10•31m ago•0 comments

Autoresearch, Claude and Constrained Optimization

https://www.elliotcsmith.com/autoresearch-claude-and-constrained-optimization/
2•gmays•32m ago•0 comments

Show HN: I built a live streaming platform

https://pairux.com/@moshcoding
1•buffer_overlord•33m ago•0 comments

Show HN: Agent Legibility Analyzer see if AI shopping agents can read your store

https://agentmint.net/
1•Abdalsalaam•34m ago•0 comments

Handheld gaming PCs are cooked

https://www.pcgamer.com/hardware/handheld-gaming-pcs/handheld-gaming-pcs-are-cooked/
3•Brajeshwar•34m ago•0 comments

Show HN: MealPlans.dev

https://mealplans.dev/
1•thequietmind•34m ago•0 comments

Device Hub

https://developer.apple.com/documentation/xcode/device-hub
1•Austin_Conlon•35m ago•0 comments