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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/

Inspiring Female Heavy Equipment Operators in Construction

https://heavydutyjournal.com/female-heavy-equipment-operators-mastering-construction-and-mining-m...
1•thunderbong•7m ago•0 comments

What is Apache Kafka and how does it work?

https://stanislavkozlovski.medium.com/what-is-apache-kafka-and-how-does-it-work-16023aa2efee
1•filipyonov•11m ago•0 comments

How Go Players Disempower Themselves to AI

https://www.lesswrong.com/posts/nR3DkyivzF4ve97oM/how-go-players-disempower-themselves-to-ai
1•cubefox•12m ago•0 comments

I clustered 3,847 public comments on the Santa Ynez offshore EIS

https://www.envirodocket.com/projects/santa-ynez-unit-resumption-eis
1•scarsam•18m ago•0 comments

Watch NASA test its new X-59 jet designed to go faster than the speed of sound

https://www.scientificamerican.com/video/watch-nasa-test-its-new-x-59-jet-designed-to-go-faster-t...
1•beardyw•21m ago•1 comments

SpaceX ISS Docking SIM

https://iss-sim.spacex.com/
1•CubicalOrange•21m ago•0 comments

Show HN: TurnZero – Persistent Expert for LLMs

1•dmilicev2•23m ago•0 comments

Wine 11.8 – Run Windows Applications on Linux, BSD, Solaris and macOS

https://www.winehq.org/announce/11.8
1•neustradamus•26m ago•0 comments

Show HN: Formattery – on-device file converter for iPhone, iPad, and Mac

https://apps.apple.com/es/app/formattery-convertir-archivos/id6759955312
1•alEscarcha•27m ago•0 comments

Ask HN: Should AI agents have their own legal entities?

1•LRG-H•28m ago•2 comments

Show HN: Hollow is an open-sourced self-modifying agentic system

https://github.com/ninjahawk/hollow-agentOS
2•ninjahawk1•31m ago•0 comments

Show HN: Create the right image sizes for social media

https://skills.sh/branding5/social-media-image-sizes/social-media-image-sizes
1•mnewme•31m ago•0 comments

Open source ballistic simulator with NASA SRTM terrain masking (Python/C#)

https://github.com/InsaneInfinity/Balistic
1•insane_infinity•32m ago•0 comments

Show HN: Glacier – A zero-config macOS terminal I vibecoded in Rust

https://github.com/pranjolm/glacier-terminal
1•ArqueNova•46m ago•0 comments

Microsoft Now Recommends 32 GB RAM as a "No Worries" Upgrade for Windows 11

https://www.techpowerup.com/348715/microsoft-now-recommends-32-gb-ram-as-a-no-worries-upgrade-for...
3•SockThief•50m ago•0 comments

I tell about my blog to anyone willing to listen

https://hamatti.org/posts/i-tell-about-my-blog-to-anyone-willing-to-listen/
1•Tomte•53m ago•0 comments

The Java 21 virtual threads and AI hype is half-true

https://old.reddit.com/r/java/comments/1t1fegr/the_java_21_virtual_threads_ai_hype_is_halftrue/
1•Tomte•54m ago•0 comments

Show HN: Agent with its own computer on the cloud

https://pulsarbot.cloud/
1•akshayballal95•59m ago•0 comments

NSA Warned Everyone to Reboot Their Routers

https://www.staysafeonline.org/articles/the-nsa-just-warned-everyone-to-reboot-their-routers-what...
4•saikatsg•1h ago•0 comments

Using Playwright to test my static sites

https://alexwlchan.net/2026/playwright/
1•ingve•1h ago•0 comments

It's a Weird Time to Be Named Claude

https://www.bloomberg.com/news/articles/2026-05-01/claude-ai-is-complicating-life-for-people-name...
3•helsinkiandrew•1h ago•0 comments

Cyber-Insecurity in the AI Era

https://www.technologyreview.com/2026/05/01/1136779/cyber-insecurity-in-the-ai-era/
1•joozio•1h ago•0 comments

Thrml - Probabilistic Compute Simulation on GPUs

https://docs.thrml.ai/en/latest/examples/01_all_of_thrml/
1•oldfuture•1h ago•0 comments

It's super weird, super odd, super rare: meet the twins who have different dads

https://www.theguardian.com/lifeandstyle/2026/may/02/rare-twins-different-dads-the-gift-bbc-radio-4
2•helsinkiandrew•1h ago•0 comments

Interstellar comet came from a much different solar system than ours

https://www.cnn.com/2026/05/01/science/interstellar-comet-3i-atlas-deuterated-water
2•reconnecting•1h ago•0 comments

You'll Subscribe to Your Router, Too – The First Router Bribes Are Here [video]

https://www.youtube.com/watch?v=qjesRkTFZqY
1•stop50•1h ago•0 comments

DojoZero – AI Agent Sport Betting Arena

https://dojozero.live
1•ekzhu•1h ago•0 comments

RYBitten: Configurable RGB-to-RYB Mapping

https://rybitten.space/
2•lioeters•1h ago•0 comments

I was wrong about vibe coding on greenfield projects.

3•dokdev•1h ago•1 comments

Spirit Airlines Is Winding Down All Operations

https://www.spiritrestructuring.com/
44•CaliforniaKarl•1h ago•63 comments