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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/

Scoring 500 Show HN Pages for AI Design Patterns

https://www.adriankrebs.ch/blog/design-slop/
1•hubraumhugo•1m ago•0 comments

Trump orders more access to psychedelics like LSD, psilocybin and ibogaine

https://www.washingtonpost.com/politics/2026/04/17/trump-psychedelics-psylocibin-research/
2•surprisetalk•2m ago•1 comments

Blocked from submiting a 0-day ransomware sample

1•hello-friend•2m ago•0 comments

The creative software industry has declared war on Adobe

https://www.theverge.com/tech/913765/adobe-rivals-free-creative-software-app-updates
1•tambourine_man•2m ago•0 comments

The Vertical AI OS: What I'd Build If I Were Starting a SaaS Today

https://substack.com/home/post/p-194446321
1•interrupt86•3m ago•0 comments

What Does a Typical Person Look Like?

https://nchagnet.eu/blog/what-does-average-person-look-like/
1•Brajeshwar•5m ago•0 comments

DictaFlow – hold-to-talk AI dictation that works inside Citrix and RDP

https://dictaflow.io/
1•ryanshrott•5m ago•0 comments

The Irreducibility of Production Experience in Software

https://www.aravindjayendran.com/writing/irreducibility-of-production-experience
1•maxaravind•6m ago•0 comments

RotorQuant: Faster Than TurboQuant

https://github.com/scrya-com/rotorquant
1•Klaster_1•9m ago•1 comments

HTTP11Probe – Probe web frameworks for compliance

https://www.http-probe.com/
1•MDA2AV•12m ago•0 comments

Generate real Android APKs on-device

https://github.com/iappyx/iappyxOS
1•iappyx•12m ago•0 comments

Quantum Country

https://quantum.country/
1•Tomte•12m ago•0 comments

Tell HN: Happy Bicycle Day

1•surprisetalk•13m ago•1 comments

Wanna bet? Washington steps up scrutiny of prediction markets

https://apnews.com/article/kalshi-polymarket-iran-congress-scrutiny-legislation-trading-3a29fdaf0...
1•1vuio0pswjnm7•14m ago•0 comments

Automate the Path from Data to Predictive Insights with Agentic ML in Snowflake

https://www.snowflake.com/en/blog/agentic-ml-snowflake-predictive-insights/
1•eigenBasis•14m ago•0 comments

Multiplying Points (2001) [pdf]

https://www.bitsavers.org/pdf/dec/tech_reports/SRC-RR-169.pdf
1•tosh•14m ago•0 comments

Martial arts robots at 2026 Spring Festival [video]

https://www.youtube.com/watch?v=Sl6YUJKssG8
1•yk•14m ago•0 comments

Bicycle Day (Psychedelic Holiday)

https://en.wikipedia.org/wiki/Bicycle_Day_(psychedelic_holiday)
1•surprisetalk•15m ago•0 comments

Police like using Google data to solve crimes. Is your privacy at risk? (2023)

https://www.latimes.com/politics/story/2023-07-24/police-google-data-geofence-warrants-california...
1•1vuio0pswjnm7•16m ago•0 comments

Ask HN: Like Gcloud but with Prepayment Only?

1•julienreszka•22m ago•1 comments

Can we make robots that eat other robots?

https://www.ft.com/content/9193ef93-d5b9-4270-b743-e7bb174bb811
1•kasperset•22m ago•1 comments

KDE developer's plans for a QML-based GPU-accelerated video/photo editing suite

https://www.youtube.com/watch?v=WlgrCqgnk-M
1•FireInsight•25m ago•0 comments

HackAIGC

https://www.hackaigc.com
1•AI-Directories•26m ago•0 comments

Show HN: verifiable API and MCP calls

https://github.com/peacprotocol/peac
1•jithinraj•28m ago•1 comments

Show HN: StegoForge – A tool to hide payloads and hunt them with offline AI

https://github.com/Nour833/StegoForge
1•nour833•29m ago•0 comments

The spacetime of code

https://kolu.dev/blog/hickey-lowy/
2•srid•30m ago•0 comments

Humanoid robot breaks half marathon world record in Beijing

https://www.aljazeera.com/sports/2026/4/19/humanoid-robot-breaks-half-marathon-world-record-in-be...
1•kasperni•31m ago•1 comments

Trump violated First Amendment by forcing Facebook, Apple to remove ICE-tracking

https://lawandcrime.com/high-profile/government-coerced-enforcement-trump-admin-violated-first-am...
3•vrganj•33m ago•0 comments

Intolerance of uncertainty (IU) positively associated with problematic phone use

https://www.sciencedirect.com/science/article/abs/pii/S0306460325002400
1•Terretta•38m ago•0 comments

Proposal: Moving ownCloud community discussion to GitHub Discussions

https://central.owncloud.org/t/proposal-moving-owncloud-community-discussion-to-github-discussion...
1•edent•42m ago•0 comments