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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/

Make Your Startup More Powerful, Not Just More Profitable

https://www.paulgraham.com/powerful.html
1•mrkn1•10s ago•0 comments

SimulaVR Compute Pack Progress

https://simulavr.com/blog/compute-pack-progress/
1•ai_critic•34s ago•0 comments

A tale of two PHP remote vulnerabilities

https://calif.io/php2shell.x/
1•kozika•49s ago•0 comments

Fil-PHP

https://github.com/pizlonator/fil-c/pull/338
1•SSLy•2m ago•0 comments

Misaligned

https://thezvi.substack.com/p/misaligned
2•7777777phil•3m ago•0 comments

Adversarial interoperability is a team sport

https://pluralistic.net/2026/10/21/brittle-individualism/
1•hn_acker•3m ago•0 comments

EFF's State Legislative Agenda to End ALPR Mass Surveillance

https://www.eff.org/deeplinks/2026/10/effs-state-legislative-agenda-end-alpr-mass-surveillance
1•hn_acker•4m ago•0 comments

Airbnb's new "Reasonable house rules and requests" guidelines for hosts

https://www.airbnb.com/help/article/4168
1•embedding-shape•4m ago•0 comments

39-humanizer, for anyone under 40 who would rather not sound like a bot

https://github.com/OmShiv/39-humanizer
1•OmShankar3•6m ago•0 comments

Show HN: ReviewerAgent and StopContinue, for CC and Codex with Pi

https://github.com/rladr-org/reviewer-agent
1•raylad•6m ago•0 comments

Imaging Black Holes with Julia [video]

https://www.youtube.com/watch?v=eHTuWt3JnZc
1•adgjlsfhk1•6m ago•0 comments

What Lego Lost When It Grew Up

https://www.theatlantic.com/culture/2026/10/lego-adult-market/689051/
1•wltyn•9m ago•0 comments

Oracle Security Alert Advisory – CVE-2026-91403

https://www.oracle.com/security-alerts/alert-cve-2026-91403.html
12•rayhaanj•12m ago•2 comments

Recompiling the Lion King (SNES, 1994) with an Agent

https://kinduff.com/2026/10/21/recompiling-the-lion-king-with-an-agent/
1•kinduff•12m ago•0 comments

Reactive Optimizers: rewrite the optimizer's source code during training

https://xingjianbai.com/reactive-optimizers/
1•matt_d•12m ago•0 comments

Malleable Systems Collective

https://malleable.systems/
1•so-cal-schemer•12m ago•1 comments

Firmenza – An AI assistant for SAM.gov registration and federal contracts

https://firmenza.com
1•ArjunSilwal•14m ago•0 comments

'Billions' Star Asia Kate Dillon Says Acting Jobs Have 'Diminished'

https://variety.com/2026/tv/news/billions-john-wick-3-asia-kate-dillon-jobs-diminished-customer-s...
2•gmays•17m ago•0 comments

Sony Vaio PCG-C1 VPK

https://www.reddit.com/r/vintagecomputing/comments/1bup7qi/sony_vaio_pcgc1_vpk/
2•Bluestein•21m ago•0 comments

Ask HN: How does your help desk verify someone before resetting MFA?

1•ovudus•21m ago•0 comments

The Physics Tech Tree

https://www.novelphysics.com/tree
2•historian1066•24m ago•0 comments

Pghacker-MCP: MCP server indexing pgsql-hackers and PostgreSQL source

https://pghacker-mcp.dev/
1•samaysharma•26m ago•0 comments

Does opting out of smart TV tracking work? Research finds "suspicious" traffic

https://arstechnica.com/gadgets/2026/10/does-opting-out-of-smart-tv-tracking-work-research-finds-...
2•MBCook•28m ago•1 comments

Face of man who lived in Roman Scotland almost 2k years ago

https://news.sky.com/story/revealed-face-of-man-who-lived-in-roman-scotland-almost-2-000-years-ag...
5•austinallegro•29m ago•0 comments

Acquiring TLS Certificates at Runtime

https://dushed.com/blog/inband-tls-certificates
1•komuW•30m ago•0 comments

Cota – Free 2D/3D CAD in the browser, with drawing views and auto-dims

https://github.com/mxchristian17/cota
2•mx_christian17•31m ago•0 comments

Railway Security Disclosure

https://blog.railway.com/p/security-disclosure-wednesday-october-21st
63•passenger•31m ago•14 comments

Chopin: A real-time multiplayer, agentic planning environment

https://githubnext.com/projects/chopin/
4•gfortaine•31m ago•0 comments

Agency: Open-source platform for debugging, profiling, and analyzing AI agents

https://github.com/agency-project/agency
3•matt_d•32m ago•0 comments

Debloating and Replacing Google Assistant with Muse on Android TV

https://natestraub.github.io/2026/10/21/out-with-the-goog-in-with-the-muse/
2•njstraub608•34m ago•0 comments