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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/

Show HN: AI agents debating questions that stump LLMs

https://factagora.com/
1•ttlcc13•2m ago•0 comments

Show HN: Elida – Session Border Controller for AI Agents

https://elida.dev/blog/2026/03/15/your-ai-soc-and-sre-agents-need-a-border-controller/
1•zamorofthat•5m ago•1 comments

Unscale the Internet

https://www.ystrickler.com/unscale-the-internet/
2•YounesDz•7m ago•0 comments

Kennedy childhood vaccine overhaul stalled by judge

https://www.statnews.com/2026/03/16/kennedy-childhood-vaccine-changes-blocked-judge/
1•gmays•8m ago•0 comments

Launch an autonomous AI agent with sandboxed execution in 2 lines of code

https://amaiya.github.io/onprem/examples_agent.html
2•wiseprobe•8m ago•0 comments

Every Bracket

https://every-bracket.com
1•michaefe•9m ago•0 comments

Neighbors Say SF Tesla Supercharger Lot Has Become Urine Dumping Ground

https://www.sfgate.com/local/article/tesla-supercharger-lot-lombard-22080348.php
4•randycupertino•12m ago•0 comments

Reverse as the VibeVerse (why pivot, when you can punk)

https://attentionhorizon.world/
1•maieuticagent•12m ago•1 comments

Observation of the doubly charmed heavy proton Ξcc+

https://lhcb-outreach.web.cern.ch/2026/03/17/observation-of-the-doubly-charmed-heavy-proton-%CE%B...
1•nobody9999•14m ago•0 comments

The Pleasures of Poor Product Design

https://www.inconspicuous.info/p/the-pleasures-of-poor-product-design
2•NaOH•18m ago•0 comments

Can weight-loss pills replace injectables?

https://www.nature.com/articles/d41586-026-00856-7
1•y1n0•19m ago•0 comments

Market Claw

https://github.com/DSparkles/MarketClaw
1•sparksdobro•21m ago•0 comments

Frontier Models Removed from GitHub Copilot Student Plan

https://github.com/orgs/community/discussions/189268
1•kpapa05•22m ago•0 comments

U.S. Book Output Rose 32.5%, Topped Four Million in 2025

https://www.publishersweekly.com/pw/by-topic/industry-news/publisher-news/article/99943-book-outp...
2•ilamont•23m ago•0 comments

Why We're Joining TikTok

https://www.nationalreview.com/2026/03/why-were-joining-tiktok/
1•petethomas•24m ago•0 comments

A tale about fixing eBPF spinlock issues in the Linux kernel

https://rovarma.com/articles/a-tale-about-fixing-ebpf-spinlock-issues-in-the-linux-kernel/
2•y1n0•25m ago•0 comments

Attackers are exploiting AI faster than defenders can keep up, new report warns

https://cyberscoop.com/booz-allen-report-ai-helps-attackers-move-faster-than-current-defenses/
3•Gaishan•26m ago•0 comments

Meta Is Shutting Down Horizon Worlds on Meta Quest

https://www.wired.com/story/meta-is-shutting-down-horizon-worlds-on-meta-quest/
2•y1n0•27m ago•0 comments

UBI Is the Wrong Answer to the Right Problem

https://simontlbt.substack.com/p/why-ubi-is-the-wrong-answer-to-the
2•simontlbt•29m ago•0 comments

Duranium: A More Reliable PostmarketOS

https://postmarketos.org/blog/2026/03/17/introducing-duranium/
1•nikodunk•32m ago•0 comments

Trump Officials Weigh New $1B Deal to Stop Offshore Wind Farms

https://www.nytimes.com/2026/03/17/climate/offshore-wind-settlements-trump.html
3•chiffre01•33m ago•0 comments

Improving breast cancer screening workflows with machine learning

https://research.google/blog/improving-breast-cancer-screening-workflows-with-machine-learning/
1•brandonb•34m ago•0 comments

Krazam – Work Sext [video]

https://www.youtube.com/watch?v=nQKAfugfn7A
1•tart-lemonade•38m ago•0 comments

FAQs About the Public Debt

https://www.treasurydirect.gov/help-center/public-debt-faqs/
2•uticus•40m ago•0 comments

Software 2.0: Planning and Verifying a Greenfield Project

https://aaronstannard.com/software-2.0-case-study-textforge/
2•Aaronontheweb•40m ago•0 comments

Show HN: A local WebP/AVIF converter because I was tired of slow browser tools

https://ghostlyinc.com/en-us/tools/pixel-press/
1•ghostlyInc•44m ago•0 comments

Lobster Pitch: A YC Adventure

https://benmathes.github.io/lobster-pitch/index.html
1•simonpure•45m ago•0 comments

Show HN: A macOS job that resets your AI coding limits automatically

https://github.com/shnksi/optimize-ai-limits
1•shnksi•46m ago•0 comments

A digital resource for studying the graffiti of Herculaneum and Pompeii

https://ancientgraffiti.org/Graffiti/
1•thomassmith65•51m ago•0 comments

Maid in Canada: More Than You Wanted to Know

https://thesecondbestworld.substack.com/p/maid-in-canada-much-more-than-you
2•paulpauper•53m ago•1 comments