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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Clip of a Tesla Optimus teleoperator taking his headset off

https://bsky.app/profile/jjvincent.bsky.social/post/3m7hps4h2x22r
1•doener•2m ago•0 comments

Google is experimentally replacing news headlines with AI clickbait nonsense

https://www.theverge.com/ai-artificial-intelligence/835839/google-discover-ai-headlines-clickbait...
1•rbanffy•3m ago•1 comments

How to Articulate Yourself Intelligently

https://letters.thedankoe.com/p/how-to-articulate-yourself-intelligently
1•BerislavLopac•3m ago•0 comments

Catala – DSL for deriving algorithms producing automated legal decisions

https://github.com/CatalaLang/catala
2•amai•3m ago•0 comments

Ask HN: What's this EU startup that claims its chip is better than Nvidia's?

1•giuliomagnifico•4m ago•0 comments

F Prime

https://fprime.jpl.nasa.gov/
1•saswatms•4m ago•0 comments

How Docker Works

https://oneuptime.com/blog/post/2025-12-08-how-docker-actually-works/view
2•ndhandala•8m ago•0 comments

The Good, the Bad, and the Search:The Golden Era of Spaghetti Westerns 1964-1978

https://flickfuture.substack.com/p/the-good-the-bad-and-the-search-relive
1•PantherCat•9m ago•0 comments

Scratch for Business Process Automation

https://scratch.divizend.ai/
1•sigalor•11m ago•0 comments

Show HN: Global crowd-sourced WiFi Speed Map

https://www.wifi.live/
1•hg30•12m ago•0 comments

One too many words on AT&T's $2k Korn shell and other Usenet topics

https://blog.gabornyeki.com/2025-12-usenet/
1•gnyeki•16m ago•0 comments

WebGPU is now supported by all major browsers

https://videocardz.com/newz/webgpu-is-now-supported-by-all-major-browsers
2•vanburen•16m ago•0 comments

Contact Sheet Prompting

https://www.willienotwilly.com/contact-sheet-prompting
1•handfuloflight•20m ago•0 comments

It Is Worth It to Optimize Images for Your Site

https://brainbaking.com/post/2025/10/is-it-worth-it-to-optimize-images-for-your-site/
1•birdculture•25m ago•0 comments

I tried 'blood cleaning', the latest wellness fad

https://www.thetimes.com/life-style/health-fitness/article/would-you-get-your-blood-cleaned-of-to...
2•janandonly•30m ago•2 comments

Show HN: Vibe Code WordPress Plugins

https://steem.dev/
1•fasthightimess•32m ago•0 comments

China's exports top expectations on strong sales to non-US markets

https://www.reuters.com/world/asia-pacific/chinas-november-exports-top-expectations-imports-under...
2•reqo•33m ago•0 comments

I fired myself and made Gemini 3 the CEO of my dying startup

https://www.indiehackers.com/post/i-fired-myself-and-made-gemini-3-0-the-ceo-of-my-dying-startup-...
4•sklinkert•34m ago•2 comments

Zono: World Clock Time Zone

https://apps.apple.com/us/app/zono-world-clock-time-zone/id6755850724?mt=12
1•mraduldeodhiya•34m ago•1 comments

Galileo (Operating System)

https://en.wikipedia.org/wiki/Galileo_(operating_system)
1•robin_reala•34m ago•0 comments

Introduction

2•just-a-test•40m ago•1 comments

12 Days of Shell

https://12days.cmdchallenge.com
33•zoidb•46m ago•9 comments

CLI coding agents browsing ncdu/gdu directly instead of parsing JSON

2•shou_arisaka•46m ago•0 comments

Lost Vegas: inside America's most flailing destination city

https://slate.com/business/2025/11/las-vegas-travel-sphere-hotel-donald-trump.html
2•ilamont•47m ago•1 comments

State of Elixir 2025 – Community Survey Results

https://elixir-hub.com/surveys/2025
2•kamilap•47m ago•0 comments

Procurement execs often don't understand the value of good design, experts say

https://fortune.com/2025/12/08/procurement-execs-often-dont-understand-the-value-of-good-design-e...
2•Brajeshwar•55m ago•0 comments

Why Leftover Pizza Might Be Healthier

https://www.scientificamerican.com/video/why-leftover-pizza-is-actually-healthier-the-science-of-...
4•Brajeshwar•56m ago•0 comments

Show HN: Sensii – League of Legends AI Coach

https://sensii.gg/
3•FreeFrosty•58m ago•1 comments

Deaths and injuries are linked to faulty Abbott glucose monitors

https://www.npr.org/2025/12/06/g-s1-101082/abbott-glucose-monitor-deaths-recall-freestyle-libre
2•Brajeshwar•59m ago•0 comments

India weighs greater phone-location surveillance; Apple, Google, Samsung protest

https://www.reuters.com/sustainability/boards-policy-regulation/india-weighs-greater-phone-locati...
1•tosh•1h ago•0 comments