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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

A Man Outside the Arena

https://unabashedobserver.substack.com/p/the-playa-haters-ball
1•paulpauper•1m ago•0 comments

Rust 1.98.0

https://blog.rust-lang.org/2026/08/20/Rust-1.98.0/
1•thesuperbigfrog•1m ago•0 comments

Why I'm Staying Out of the Substack Religion Debate

https://www.astralcodexten.com/p/why-im-staying-out-of-the-substack
1•paulpauper•3m ago•0 comments

How We Evaluate Model Risk

https://research.snyk.io/blog/model-risk/
1•lbeurerkellner•5m ago•0 comments

Where's The Beef? – The lab-grown-meat revolution that wasn't

https://harpers.org/archive/2026/09/wheres-the-beef-lab-grown-meat-erin-somers/
1•speckx•5m ago•0 comments

Windows 11 ARM64 VS2026 image generally available

https://github.blog/changelog/2026-08-20-windows-11-arm64-vs2026-image-generally-available/
1•smokeeaasd•5m ago•0 comments

Scientists use gene editing to create hypoallergenic dogs

https://apnews.com/article/hypoallergenic-dogs-crispr-pet-allergies-f5bd8cb438dfd1a9d1cccd4a1d46fd2a
2•gmays•5m ago•0 comments

Show HN: Huzzah – a novel approach to coding with AI

https://www.danielvaughn.dev/posts/huzzah/
1•danielvaughn•6m ago•0 comments

A magnitude 6.7 earthquake has shaken Peru's southern Andes

https://apnews.com/article/peru-earthquake-andes-mountains-0018e250224f1cd86fc4c99cb33a9537
2•wslh•7m ago•0 comments

Seeking God in Science Part 10.5: The Mind-Body Problem (Take 2)

http://blog.rongarret.info/2026/08/seeking-god-in-science-part-105-mind.html
3•lisper•10m ago•0 comments

Benchmarking Speculative Decoding on DGX Spark: 11.5 → 29.5 tok/s

https://alephinitesimal.com/posts/bandwidth-ceiling.html
2•Alephinitesimal•11m ago•0 comments

InstantDB Is Shutting Down

3•redindian75•12m ago•0 comments

OpenAI's Rogue AI Agent Hacked More Than Just Hugging Face

https://www.wired.com/story/openais-rogue-ai-agent-hacked-more-than-just-hugging-face/
3•thunderbong•13m ago•1 comments

You can soon stream Crunchyroll on your car's infotainment system

https://www.engadget.com/2240331/crunchyroll-appning-by-forvia-stream-on-car-infotainment-system/
2•bookofjoe•15m ago•0 comments

S2C – Shared Storage Consensus

https://github.com/io-s2c/s2c/tree/main
3•theanonymousone•16m ago•0 comments

Scientific study reveals TikTok videos deactivate key cognitive brain regions

https://www.rathbiotaclan.com/tiktok-videos-deactivate-key-cognitive-brain-regions/
11•Akasci•17m ago•1 comments

G#: A Go-like language for .NET

https://www.infoworld.com/article/4210637/introducing-g-sharp-a-go-like-language-for-dot-net.html
3•theanonymousone•17m ago•0 comments

Apache Iceberg Tutorials and More

https://oleander.dev/grow
2•jessol•17m ago•0 comments

WAL based distributed consensus on S3

https://github.com/io-s2c/s2c/blob/main/docs/design-doc.md
2•mzazaipsc•18m ago•0 comments

The Albanian Files

https://www.wallpaper.com/architecture/the-albanian-files-freedom-and-architecture-book
3•simonebrunozzi•18m ago•0 comments

Tab Completion After Colon

https://so.nwalsh.com/2026/08/20-tab-completion
2•speckx•18m ago•0 comments

A quiet channel between ICE and Iran shaped deportation flights

https://apnews.com/article/iran-immigration-deportation-flights-emails-97554a7ab9d1f33ca00700434d...
7•toomanyrichies•20m ago•0 comments

We let $200 GPT-Pro Think for 7 days on unsolved math

https://www.youtube.com/watch?v=DBrmtjM1Mq4
4•dgellow•20m ago•0 comments

Our Servants Will Do That for Us

https://borretti.me/article/our-servants-will-do-that-for-us
4•ibobev•22m ago•0 comments

AI Alignment as a Thought-Terminating Cliche

https://borretti.me/article/ai-alignment-as-thought-terminating-cliche
4•ibobev•22m ago•0 comments

Fieldmade – RPG crafting by drawing pixel art and AI

https://chromagolem.itch.io/fieldmade
3•ChromaGolem•22m ago•1 comments

US debt tops $40T as Treasury doubles bond buybacks to calm markets

https://www.euronews.com/business/2026/08/20/us-debt-tops-40-trillion-as-treasury-doubles-bond-bu...
8•abdelhousni•22m ago•0 comments

Meta glasses are a workplace menace

https://www.theverge.com/report/982414/meta-glasses-work-surveillance-labor-security
8•hberg•22m ago•1 comments

Show HN: trailers.fm – live channel of movie trailers

https://trailers.fm/
2•dogancan•22m ago•0 comments

Spirit Flight Attendants Fight Google's Data Bid for AI

https://www.wsj.com/pro/bankruptcy/spirit-flight-attendants-fight-googles-data-bid-for-ai-e939e049
2•thm•24m ago•0 comments