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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/

It's time to give back to the world

https://www.fikrikarim.com/give-back/
1•karimf•23s ago•0 comments

Implantable 'living pharmacy' produces multiple drugs inside the body

https://news.northwestern.edu/stories/2026/03/implantable-living-pharmacy-produces-multiple-drugs...
1•gmays•2m ago•0 comments

The Camps Promising to Turn You – Or Your Son – Into an Alpha Male

https://www.newyorker.com/magazine/2026/04/06/the-camps-promising-to-turn-you-or-your-son-into-an...
1•mitchbob•4m ago•1 comments

FDA Draft Guidance for the Use of Bayesian Methods in Clinical Trials

https://jamanetwork.com/journals/jama/fullarticle/2847012
2•walterbell•4m ago•0 comments

A custom AndroidDeX (like Samsung DeX) built using scrcpy and ADB

https://old.reddit.com/r/scrcpy/comments/1s6qhlw/i_built_a_androiddex_like_samsung_dex_using/
3•aagha•5m ago•0 comments

The Hateful Eight is 85% of S&P 500 Decline

https://paulkedrosky.com/chart-of-the-day-the-hateful-eight-is-85-of-s-p-500-decline/
3•aanet•5m ago•1 comments

Emulating old OS X versions with QEMU

https://82mhz.net/posts/2026/03/emulating-old-os-x-versions-with-qemu/
2•speckx•6m ago•0 comments

What do coders do after AI?

https://www.anildash.com/2026/03/13/coders-after-ai/
2•farmerbb•9m ago•0 comments

An Alternative Trajectory for Generative AI

https://arxiv.org/abs/2603.14147
2•haltingproblem•10m ago•0 comments

Show HN: Built Paul Graham's Intellectual CAPTCHA Idea

https://mentwire.com/
2•nowflux•11m ago•0 comments

Lots of AI SRE, no AI incident management

https://surfingcomplexity.blog/2026/02/14/lots-of-ai-sre-no-ai-incident-management/
2•sylvainkalache•12m ago•1 comments

The Scaling Curve: Dario Amodei, Anthropic and the Race to Superintelligence

https://www.amazon.com/Scaling-Curve-Anthropic-Survive-Superintelligence/dp/B0GPJN56JQ
2•todsacerdoti•13m ago•0 comments

Eliminating hallucination under adversarial conditions 0/30 vs. 6/30, same model

https://github.com/ediestel/ntgt-epistemic-integrity
2•eckhart_diestel•13m ago•0 comments

Garry Tan: "37K LOC per day across 5 projects"

https://twitter.com/garrytan/status/2038555792052506941
5•focusgroup0•13m ago•2 comments

Fedware: Government Apps That Spy Harder Than the Apps They Ban

https://www.sambent.com/the-white-house-app-has-huawei-spyware-and-an-ice-tip-line/
4•speckx•16m ago•0 comments

Komodo v2.0 Released

https://komo.do/docs/releases/v2.0.0
3•monkaiju•17m ago•0 comments

Principal Component Analysis

https://en.wikipedia.org/wiki/Principal_component_analysis
4•dhorthy•18m ago•0 comments

It rather involved being on the other side of this airtight hatchway (2006)

https://devblogs.microsoft.com/oldnewthing/20060508-22/?p=31283
4•JoshTriplett•19m ago•1 comments

"CEO Said a Thing " Journalism

https://karlbode.com/ceo-said-a-thing-journalism/
10•LordAtlas•19m ago•0 comments

Agentic software development will change databases

https://www.databricks.com/blog/how-agentic-software-development-will-change-databases
3•shenli3514•20m ago•1 comments

I wrote a scientific fairy tale to explain molecules without formulas

https://www.amazon.it/Molecole-Gentili-scientifica-emozione-invisibile-ebook/dp/B0GTWPFNXF
2•molecolegentili•21m ago•0 comments

Compiler as a Service: C++ Goes Live – Interactive C++, interop, and beyond [video]

https://www.youtube.com/watch?v=jMO5Usa26cg
1•matt_d•22m ago•1 comments

From Oil to All-Electric: My 1950 Cape Cod Journey

https://tools.schleidtworks.com/honeyhilllane/story.html
1•mrburns85•25m ago•0 comments

Zig Tooling Pain Points?

2•lindir•27m ago•0 comments

I hacked a $100 eCalendar into family hub signage

https://absolutelyright.blog/blog/hacking-a-100-ecalendar-into-a-family-dashboard/
1•maderalabs•28m ago•0 comments

The Odd–and Oddly Human–Work of Teaching AI to Talk

https://www.bloomberg.com/news/articles/2026-03-30/inside-the-odd-and-oddly-human-work-of-teachin...
4•aanet•28m ago•1 comments

WeWork ISO 27001 Certificate Expired

https://www.iafcertsearch.org/certification/t5opTcPyXkg8yNxOVHdPWe3y
5•Yoms•28m ago•1 comments

Can seaweed solve our plastic problem?

https://www.cnn.com/2026/03/30/business/video/plantsea-seaweed-biodegradable-spc-digivid
1•simonebrunozzi•29m ago•0 comments

See How Hollywood's Job Market Is Collapsing

https://www.wsj.com/business/media/see-how-hollywoods-job-market-is-collapsing-230be437
2•thm•29m ago•0 comments

The Longest Line of Sight

https://tombh.co.uk/longest-line-of-sight
2•ohjeez•31m ago•0 comments