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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/

Open Problems Solved by LLMs? A Survey of Verifiable Mathematical Discovery [pdf]

https://aclanthology.org/2026.bigpicture-main.2.pdf
1•antondd•3m ago•0 comments

Credit Card Points Are a Transfer from the Broke to the Comfortable

https://willisallstead.substack.com/p/your-credit-card-points-are-a-transfer
3•willio58•7m ago•0 comments

Why X Is Not Our Ideal Window System

https://people.freedesktop.org/~ajax/WhyX.pdf?__goaway_challenge=meta-refresh&__goaway_id=c287e9b...
2•signa11•7m ago•0 comments

ReFrame – The EPaper Camera

https://reframe.camera/
2•NetOpWibby•9m ago•0 comments

PSA about abuse of cat(1) command. Don't abuse cats

https://www.abuseofcats.com
2•scooterbooper•10m ago•0 comments

Aside – Reddit-like circles with AI-ranked feeds

https://aside.cool/
1•zhiwenhuang•12m ago•0 comments

People Counter with Infrared Sensor: Build Your Own System in a Few Hours

https://comuniq.xyz/post?t=1406
3•01-_-•16m ago•0 comments

Sourced ranking of the AI infrastructure build-out

https://www.capexindex.com/
2•umangsehgal93•19m ago•0 comments

Loop Library for Engineers

https://signals.forwardfuture.com/loop-library/
1•tylerdane•20m ago•0 comments

Common diet tips about water intake and spicy foods could be dead wrong

https://news.cornell.edu/stories/2026/07/common-diet-tips-about-water-intake-and-spicy-foods-coul...
2•littlexsparkee•21m ago•0 comments

Figma for Email?

https://www.hedwig-ai.com/
2•neshc•21m ago•1 comments

M17 rev B done, rev C next

https://m17project.org/2026/06/16/linht-rev-b-status-what-works-what-broke-and-why-rev-c-is-next/
2•client4•22m ago•0 comments

My C and Assembler 3D Real Time Renderer from 1997

https://ben3d.ca/blog/rendering-real-time-3d-before-gpus
2•bhouston•25m ago•0 comments

Clang: Hardware-Assisted AddressSanitizer Design Documentation

https://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html
2•signa11•27m ago•0 comments

A Functional Taxonomy of World Models by Fei-Fei Li

https://drfeifei.substack.com/p/a-functional-taxonomy-of-world-models
3•andsoitis•27m ago•0 comments

Goiânia Accident

https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident
3•isagues•29m ago•0 comments

Tyler Cowen: the future belongs to AI maniacs

https://www.thefp.com/p/tyler-cowen-ai-maniacs-future-economy
2•thoughtpeddler•30m ago•0 comments

Repeal of national park rule could impact drinking water for millions

https://www.courthousenews.com/repeal-of-national-park-rule-could-impact-drinking-water-for-milli...
4•geox•30m ago•0 comments

Things you didn't know about indexes

https://jon.chrt.dev/2026/04/15/things-you-didnt-know-about-indexes.html
2•thunderbong•31m ago•0 comments

Claude Code(Fable) refused my slow down instruction

https://qusaisuwan.github.io/cc-incident/index.html
2•qusaisuwan•33m ago•0 comments

VM Timekeeping: Using the PTP Hardware Clock on KVM

https://www.libertysys.com.au/2024/04/vm-timekeeping-using-the-ptp-hardware-clock-on-kvm/
2•randen•34m ago•0 comments

BigKeyRing – Physical Key Management

https://bigkeyring.com/
2•Kroopo•36m ago•0 comments

Avatoon – React Three Fiber component for audio-synced 3D avatar lip-sync

https://github.com/khaledalam/avatoon
2•KhaledAlam•38m ago•1 comments

A non-partisan map of how Congress votes and who donates

https://anaximander.us
2•Vavnik•38m ago•0 comments

The Birth of Prolog (1996)

https://dl.acm.org/doi/10.1145/234286.1057820
3•Jtsummers•40m ago•0 comments

The AI Codebase

https://swapnilchauhan.com/blog/the-ai-codebase/
1•swapxstar•41m ago•1 comments

How An Adolescent's Brain Reacts to Faces May Predict Their Social Future

https://www.ucdavis.edu/health/news/how-adolescents-brain-reacts-faces-may-predict-their-social-f...
3•gmays•43m ago•0 comments

PrimeTask – an offline-first workspace with local data and no subscription

https://www.primetask.app
1•vxvaptor•44m ago•0 comments

Using asteroid early orbital data for rapid Mars missions

https://www.sciencedirect.com/science/article/pii/S0094576526002456
1•andsoitis•45m ago•0 comments

The Isomorphic Labs Drug Design Engine unlocks a new frontier beyond AlphaFold

https://www.isomorphiclabs.com/articles/the-isomorphic-labs-drug-design-engine-unlocks-a-new-fron...
3•andsoitis•47m ago•0 comments