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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•8mo ago

Comments

trane_project•8mo 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/

Zo-Topia: My Computer in the Cloud

https://www.jplhomer.org/posts/zo-topia-my-zo-computer-experience/
1•erhuve•3m ago•0 comments

Norway EV Push Nears 100 Percent: What's Next?

https://spectrum.ieee.org/norway-ev-policy-electric-vehicles
2•rbanffy•5m ago•0 comments

How to avoid common AI pitfalls in the workplace

https://www.economist.com/briefing/2026/01/29/how-to-avoid-common-ai-pitfalls-in-the-workplace
1•Anon84•6m ago•0 comments

Apple-1 Computer Prototype Board #0 Sells for $2.7M

https://www.rrauction.com/auctions/lot-detail/350902407346003-apple-1-computer-prototype-board-0-...
1•oldnetguy•6m ago•0 comments

Nvidia's 10-year effort to make the Shield TV the most updated Android

https://arstechnica.com/gadgets/2026/01/inside-nvidias-10-year-effort-to-make-the-shield-tv-the-m...
1•vanburen•7m ago•0 comments

From bad omen to national treasure:rare bone-swallower stork saved byfemale army

https://www.bbc.com/future/article/20260128-the-protectors-of-indias-greater-adjutant-storks
1•koolhead17•7m ago•0 comments

I've been compiling my Sass wrong, for years

https://www.alwaystwisted.com/articles/ive-been-compiling-my-sass-wrong-for-years
1•speckx•9m ago•0 comments

Nailz: Input device using touch-enabled nails (2021)

https://www.youtube.com/watch?v=O_uiL49IA2I
1•downboots•9m ago•0 comments

Why Wide Top Surfaces Are Essential for Shared Spaces

https://dreamhomestore.co.uk/products/3-over-4-chest-of-drawers
1•dreamhomestore•10m ago•1 comments

Best Gas Masks

https://www.theverge.com/policy/868571/best-gas-masks
1•dtj1123•11m ago•0 comments

How to Run Self-Hosted LLMs on Kubernetes

https://oneuptime.com/blog/post/2026-01-29-self-hosted-llms-on-kubernetes/view
1•ndhandala•11m ago•0 comments

Running Out of Claude? How to Use Self-Hosted LLMs with Moltbot

https://oneuptime.com/blog/post/2026-01-30-self-hosted-llm-with-moltbot/view
2•ndhandala•11m ago•0 comments

ISS SIM

https://iss-sim.spacex.com/
1•belter•13m ago•0 comments

Why Are You Still Dizzy?

https://dizzypt.substack.com/p/why-you-are-still-dizzy-the-survival
1•DIZZYPT•13m ago•0 comments

Show HN: Unrar5j – Pure Java RAR5 Extractor

https://github.com/RealBurst/unrar5j
1•RealBurst•13m ago•1 comments

Monitiser – Automated Social Media content generation and posting

https://monitiser.com/
1•jackegerton•14m ago•1 comments

ClosedClaw

https://closedclaw.com/
1•brikym•15m ago•0 comments

A Single Diplomatic Meeting Crashed Gold 7% in One Hour

https://lightcapai.medium.com/the-geopolitical-rug-pull-how-a-single-handshake-in-ankara-crashed-...
6•sevenal•19m ago•1 comments

Show HN: UnIQum – Real-time CEX/DEX arbitrage scanner (40ms latency)

https://uniqum.io/dashboard
3•xetokky•22m ago•1 comments

The North Sea oil field used to store greenhouse gas

https://www.bbc.com/news/articles/cq5y7dd284do
3•1659447091•23m ago•0 comments

Challenges of CIAM – Navigating Security, Usability, and Compliance

https://fusionauth.io/articles/ciam/challenges-of-ciam
2•mooreds•24m ago•0 comments

Show HN: xllify turns prompts into Excel functions

https://xllify.com/
2•alexjreid•25m ago•0 comments

The systems that build star performers

https://bigthink.com/smart-skills/star-performers-david-epstein/
2•Brajeshwar•25m ago•0 comments

A just agricultural transition taking root in Brazil

https://www.just-stories.org/stories/a-just-agricultural-transition-taking-root-in-brazil
2•mooreds•26m ago•0 comments

Jews and the Amish Accidentally Invented the Same Lamp (2023)

https://www.jellomenorah.com/p/how-jews-and-the-amish-accidentally
3•mooreds•26m ago•0 comments

Deterministic Governance: mechanical exclusion / bit-identical

https://github.com/Rymley/Deterministic-Governance-Mechanism
2•verhash•27m ago•1 comments

Wasmer 7.0

https://wasmer.io/posts/wasmer-7
2•marxin•30m ago•0 comments

Show HN: Aethra – Composing music with a clean, beginner-friendly DSL

1•CzaxTanmay•32m ago•0 comments

Show HN: Underscore – Code with AI in the browser, zero setup required

https://app.underscore.is/
1•antonellof•32m ago•0 comments

Ubisoft Veteran Says He Was Suspended for Criticizing Return-to-Office Policy

https://www.gamespot.com/articles/ubisoft-veteran-says-he-was-suspended-for-criticizing-its-retur...
1•eXpl0it3r•32m ago•0 comments