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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Biology is a Burrito: A text- and visual-based journey through a living cell

https://burrito.bio/essays/biology-is-a-burrito
1•the-mitr•13m ago•0 comments

Can LLMs create lasting flashcards from readers' highlights?

https://memory-machines.com/report/
1•jryio•13m ago•0 comments

The Arpanet Reconstruction Project

https://obsolescence.dev/arpanet_home.html
1•ecliptik•14m ago•0 comments

Where the Goblins Came From

https://openai.com/index/where-the-goblins-came-from/
29•ilreb•16m ago•0 comments

Demonstrating the idea of gamma camera imaging [video]

https://www.youtube.com/watch?v=PyGlHtvihXA
1•num42•18m ago•0 comments

Ernie 5.1 Preview

https://ernie.baidu.com/
2•qainsights•19m ago•0 comments

Strait of Hormuz Daily Intelligence

https://insights.windward.ai/
2•jnord•21m ago•0 comments

LFM2-24B-A2B: Scaling Up the LFM2 Architecture

https://www.liquid.ai/blog/lfm2-24b-a2b
1•nateb2022•22m ago•0 comments

Finetuning Activates Verbatim Recall of Copyrighted Books in LLMs

https://github.com/cauchy221/Alignment-Whack-a-Mole-Code
1•reconnecting•25m ago•0 comments

Functional Programmers need to take a look at Zig

https://pure-systems.org/posts/2026-04-29-functional-programmers-need-to-take-a-look-at-zig.html
3•xngbuilds•26m ago•0 comments

Transponders to be installed on New York area airport ground vehicles

https://apnews.com/article/laguardia-plane-crash-air-canada-transponders-18578e94f2f7ec67b5ed45e9...
1•geox•27m ago•0 comments

GitHub Is Sinking

https://dbushell.com/2026/04/29/github-is-sinking/
1•xngbuilds•29m ago•0 comments

Opus 4.7's New Tokenizer: What It Costs

https://openrouter.ai/announcements/opus-47-tokenizer-analysis
3•vinhnx•30m ago•0 comments

Scroll-Driven Animations

https://www.joshwcomeau.com/animation/scroll-driven-animations/
1•vinhnx•30m ago•0 comments

AI Groupchats app just launched

https://techcrunch.com/2026/04/29/meet-shapes-the-app-bringing-humans-and-ai-into-the-same-group-...
1•nooriee•32m ago•1 comments

Show HN: Lssh – Terminal-native remote access suite for SSH and cloud targets

https://github.com/blacknon/lssh
1•blacknon•33m ago•1 comments

What is something you started and then wish you started earlier?

https://old.reddit.com/r/AskReddit/comments/1szjkl5/comment/oj2a8b7/
1•eeko_systems•35m ago•0 comments

I Choose Email over Messaging

https://www.spinellis.gr/blog/20250926/
1•fagnerbrack•37m ago•0 comments

The TypeScript AI Framework – Mastra

https://mastra.ai/
1•fagnerbrack•37m ago•0 comments

Build programmatic agents with the Cursor SDK

https://cursor.com/blog/typescript-sdk
1•2arrs2ells•38m ago•0 comments

The AI Compute Extensions (ACE) for x86 [pdf]

https://x86ecosystem.org/wp-content/uploads/2026/03/ACE-Whitepaper-v1.pdf
2•matt_d•44m ago•0 comments

Microsoft open sources DOS 1.00 on 45th anniversary

https://opensource.microsoft.com/blog/2026/04/28/continuing-the-story-of-early-dos-development/
9•hackthemack•44m ago•1 comments

Beyond Conventional Drones: A Review of Unconventional Rotary-Wing UAV Design

https://www.mdpi.com/2504-446X/9/5/323
1•CarbonBasedUnit•44m ago•0 comments

Warm Burnout: editor and terminal color scheme

https://warmburnout.com/
3•cdrnsf•46m ago•0 comments

IBM Releases Granite 4.1 family of models

https://research.ibm.com/blog/granite-4-1-ai-foundation-models
2•ibgeek•47m ago•0 comments

Agents can now create Cloudflare accounts, buy domains, and deploy

https://blog.cloudflare.com/agents-stripe-projects/
1•tech234a•51m ago•0 comments

QuaryLite

https://github.com/sardortpd-eng/QuaryLite
1•sardor-sam•55m ago•0 comments

Orangutan Filmed Using a Human-Made Bridge

https://www.sciencealert.com/world-first-orangutan-filmed-using-a-human-made-bridge
1•wslh•57m ago•0 comments

All databases will eventually be (re)written in Rust

https://kerkour.com/rust-databases
1•lwhsiao•1h ago•0 comments

Show HN: I built a zero-tracking news hub to escape doomscrolling at (AGE 17y)

1•blazeeofsun•1h ago•0 comments