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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/

It was great to have Raekwon at our office again

https://twitter.com/PalantirTech/status/2090889852405334118
1•mellosouls•4m ago•1 comments

Episode 2: Life After Stripe

https://jondlm.github.io/website/blog/life_after_stripe/
1•jondlm•7m ago•0 comments

Canada suspends trade negotiations with USA and match tariffs dollar for dollar

https://www.pm.gc.ca/en/news/statements/2026/08/21/statement-prime-minister-carney-canada-us-trad...
1•backlit4034•7m ago•0 comments

The Joy of Why (podcast): Are We Thinking Correctly About AI Intelligence?

https://www.quantamagazine.org/are-we-thinking-correctly-about-ai-intelligence-20260820/
1•Terretta•17m ago•1 comments

Procedural Three.js web design templates for agents

https://threeui.com/browse
1•luispa•17m ago•0 comments

Kayva – continuous care on the watch you wear

https://www.kayvahealth.com/
2•abhinav_rana•19m ago•0 comments

Bidad (Outcry). A Film by Soheil Beiraghi [video]

https://www.youtube.com/watch?v=Q2phizeC6Lo
1•fodmap•22m ago•1 comments

Comparing open vs. closed models across the eras of frontier models

https://newsletter.semianalysis.com/p/are-open-models-catching-up
2•giuliomagnifico•24m ago•0 comments

Enabling the next-generation trait solver on nightly

https://blog.rust-lang.org/2026/08/21/enabling-next-solver-on-nightly/
1•KolmogorovComp•31m ago•0 comments

Show HN: I built a tool for creating mock HTTP endpoints

https://www.http-response.com/
2•primalscreamer•32m ago•1 comments

Who Should Pay for Source Code Availability?

https://kristoff.it/blog/source-code-availability/
2•r3ason•32m ago•0 comments

Hidden Zillow listings created fake supply shock, raising NYC rents, lawsuit

https://arstechnica.com/tech-policy/2026/08/class-action-accuses-brokers-of-hiding-zillow-listing...
2•pseudolus•36m ago•0 comments

Z80–The 1970s Microprocessor Still Alive

https://www.computer.org/csdl/magazine/mi/2021/06/09623402/1yJTvlRLmhi
1•asdefghyk•43m ago•1 comments

Munder Difflin – Agent harness to run an office of your clones

https://munderdiffl.in/
2•simonpure•44m ago•0 comments

These animals can predict volcanic eruptions, storms and more

https://www.cbc.ca/documentaries/the-nature-of-things/these-animals-can-predict-volcanic-eruption...
1•svenfaw•45m ago•0 comments

At the moment: 472 gas-fired power plants are under development in the US

https://twitter.com/NatBullard/status/2090496193910730883
2•ksec•47m ago•0 comments

CyberStrike – open-source AI harness for offensive security (AGPL)

https://github.com/CyberStrikeus/CyberStrike
2•orhanyildirim•48m ago•1 comments

Math Academy – How Our AI Works

https://www.mathacademy.com/how-our-ai-works
1•olvy0•49m ago•0 comments

Panache: Language server, formatter, linter for Markdown, Quarto, and R Markdown

https://github.com/jolars/panache
1•fhchl•50m ago•0 comments

Saab Unveils Stealthy Supersonic 'Fighter Drone' Concept

https://www.twz.com/air/saab-unveils-stealthy-supersonic-fighter-drone-concept
1•madspindel•50m ago•0 comments

Waterloo's student rocketry team breaks a world record

https://uwaterloo.ca/news/engineering/waterloos-student-rocketry-team-breaks-world-record
3•pseudolus•59m ago•0 comments

ISRO will not make any launch vehicle, all tech to be handed to private sector

https://www.indiatoday.in/science/story/isro-will-not-make-any-launch-vehicle-all-tech-to-be-hand...
1•thunderbong•1h ago•1 comments

The hold that could not release itself

https://shitrat.ai/log/the-hold-that-could-not-release-itself
1•handfuloflight•1h ago•0 comments

Hermeus, a venture-backed defense aviation company

https://hermeus.com
1•ksec•1h ago•0 comments

MacStories is posting on Twitter again

https://mastodon.macstories.net/@viticci/117134048567780192
2•latexr•1h ago•1 comments

Homebrew 68K Machine Has a PCI Bus

https://hackaday.com/2026/08/20/homebrew-68k-machine-has-a-pci-bus/
4•birdculture•1h ago•1 comments

New chip mimics how cancer spreads

https://ecancer.org/en/news/28752-new-chip-mimics-how-cancer-spreads
2•giuliomagnifico•1h ago•0 comments

Fypbid.lol

https://fypbid.lol/
1•Teyz•1h ago•0 comments

AWS Security makes an inscrutable choice

https://www.theregister.com/security/2026/08/22/aws-security-makes-an-inscrutable-choice-corey-qu...
2•neuroelectron•1h ago•0 comments

Tech Layoffs 2026 – 170,777 Jobs Cut

https://layoffhedge.com/industry/tech-layoffs-2026
5•msolujic•1h ago•1 comments