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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

Gartner: AI is not a silver bullet for mainframe exit

https://www.heise.de/en/news/Gartner-AI-is-not-a-silver-bullet-for-mainframe-exit-11259157.html
1•layer8•35s ago•0 comments

Show HN: Hormuz Trail

https://hormuztrail.com/
1•sstradling•54s ago•0 comments

CRISPR takes a bold leap toward silencing Down syndrome's extra chromosome

https://medicalxpress.com/news/2026-04-crispr-bold-silencing-syndrome-extra.html
1•amichail•1m ago•0 comments

What's Happening to Beyond Meat?

https://www.foodpolitics.com/2026/04/whats-happening-to-beyond-meat/
1•speckx•1m ago•0 comments

Ask HN: How do you prepare for a mid career Research Engineer role at neo Labs

1•sameersegal•1m ago•0 comments

If you ignore soft skills, you'll be taken for a ride

https://togetherlondon.com/insights/ignore-soft-skills-at-your-peril
1•algebracare•2m ago•0 comments

AI Coding Agents get better at functional code, but not security

https://www.endorlabs.com/research/ai-code-security-benchmark
1•EwokAmbassador•2m ago•0 comments

Minimal Viable Programs (2014)

https://joearms.github.io/published/2014-06-25-minimal-viable-program.html
1•bachmeier•7m ago•0 comments

What we talk to when we talk to language models

https://philarchive.org/rec/CHAWWT-8
1•Anon84•7m ago•0 comments

Chrome Extension for Google Search Console that auto request URL indexing

https://github.com/ogamaniuk/GSC-URL-Indexer/
1•alexander-g•9m ago•1 comments

Lyra 2.0: Explorable Generative 3D Worlds

https://research.nvidia.com/labs/sil/projects/lyra2/
2•pretext•9m ago•0 comments

Ask HN: Any one use Haskell to paractise their algorithm skill

1•JasonHEIN•10m ago•2 comments

Show HN: Moxn – Git-like version control for collaborative docs

https://moxn.dev/
1•mark-weiss•10m ago•1 comments

Wispr Flow Is Tracking Every App/URL You Visit and Taking Screenshots

https://wensenwu.com/thoughts/wispr-flow-investigation
4•Cveinnt•10m ago•0 comments

We built our AI agent, for analyzing CI logs

https://www.mendral.com/blog/how-we-built-our-ai-agent
1•shad42•11m ago•0 comments

Ask HN: Plenty of organic traffic but struggling to make sales

1•abysmalconvers•12m ago•0 comments

Strategic advantage opportunity – next-gen. observability layer 29 min earlier

https://ravensystems.group
1•ravensystems•14m ago•0 comments

Convert every software into an RL environment

https://cmu-l3.github.io/gym-anything/docs/
2•pHequals7•17m ago•0 comments

Orange Pi 4 Pro Review

https://boilingsteam.com/orange-pi-4-pro-review/
3•ekianjo•17m ago•0 comments

The first spark: what we learned during our first Hackathon

https://www.float.com/blog/first-spark-float-hackathon
1•mooreds•18m ago•0 comments

What's the deal with Alzheimer's disease and amyloid?

https://arstechnica.com/science/2026/04/whats-the-deal-with-alzheimers-disease-and-amyloid/
2•quapster•20m ago•0 comments

Netgear wins first U.S. approval to keep selling foreign-made routers

https://qz.com/netgear-fcc-exemption-foreign-router-ban-041526
1•sbuttgereit•21m ago•0 comments

Allbirds Now Says It's an AI Company, Stock Jumps 800%

https://www.forbes.com/sites/zacharyfolk/2026/04/15/shoemaker-allbirds-suddenly-says-its-an-ai-co...
2•gmays•21m ago•0 comments

Show HN: Libretto – Making AI browser automations deterministic

https://github.com/saffron-health/libretto
1•muchael•22m ago•0 comments

SMS delivery isn't deterministic (and most APIs hide why)

https://blog.bridgexapi.io/most-developers-don-t-control-messaging-they-depend-on-it
2•Bridgexapi•23m ago•1 comments

Securing non-human identities: automated revocation, OAuth, scoped permissions

https://blog.cloudflare.com/improved-developer-security/
2•gmays•24m ago•0 comments

Fun with EML (Exp-Minus-Log)

https://mobiarch.wordpress.com/2026/04/15/fun-with-eml-exp-minus-log/
1•leopoldj•25m ago•0 comments

A Roadmap for Building an Extended Standard Library for Rust

https://kerkour.com/rust-extended-standard-library
1•emschwartz•25m ago•0 comments

See 364 prompts that wrote 94% of Buildermark

https://demo.buildermark.dev/projects/u020uhEFtuWwPei6z6nbN
1•davidcann•26m ago•0 comments

Ask HN: Non AI Contributor on Project Teams

1•jemiluv8•26m ago•1 comments