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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/

Printed neurons communicate with living brain cells

https://news.northwestern.edu/stories/2026/4/printed-neurons-communicate-with-living-brain-cells
1•robbomacrae•1m ago•0 comments

I collect first sale stories from founders

https://firstsalestories.com
1•jyriso•1m ago•0 comments

There Are Three Aardvarks (2024)

https://freakytrigger.co.uk/wedge/2024/02/there-are-three-aardvarks
1•wise_blood•3m ago•0 comments

Alchemy and Machinery: What Apple's Steve Jobs Can Teach Pronatalists

https://www.governance.fyi/p/alchemy-and-machinery-what-apples
1•guardianbob•4m ago•0 comments

How Silicon Valley Is Turning Scientists into Exploited Gig Workers

https://www.thenation.com/article/society/ai-silicon-valley-andreesen-thiel-stem/
1•ZunarJ5•6m ago•0 comments

Content vs. Curation

https://bayinformationsystems.substack.com/p/content-is-dead-the-curation-inversion
1•anax32•6m ago•0 comments

P-e-n-i-s Costume Protester Prevails in Court

https://www.courthousenews.com/penis-costume-protester-prevails-in-court/
2•ludicrousdispla•8m ago•0 comments

Ego Turns Good Engineers into Bad Teammates

https://shiftmag.dev/developers-your-ego-is-the-real-bug-in-the-system-7657/
3•choochilla4•8m ago•0 comments

Jar of NIST peanut butter for $2,050

https://www.sigmaaldrich.com/US/en/product/sial/nist2387
1•wglass•10m ago•0 comments

Let's talk about AI slop in open source

https://archestra.ai/blog/only-responsible-ai
2•motakuk•10m ago•0 comments

How (and why) we rewrote our production C++ front end infrastructure in Rust

https://blog.nearlyfreespeech.net/2026/04/17/how-and-why-we-rewrote-our-production-c-frontend-inf...
1•mjyut•12m ago•0 comments

Name in Landsat

https://science.nasa.gov/mission/landsat/outreach/your-name-in-landsat/
1•tzury•12m ago•0 comments

Cycles of disruption in the tech industry: with Kent Beck and Martin Fowler

https://newsletter.pragmaticengineer.com/p/cycles-of-disruption-in-the-tech
1•taubek•18m ago•0 comments

How to write to /dev/rdiskX without root: a look at macOS authopen

https://tech.dreamleaves.org/posts/how-to-write-to-dev-rdiskx-without-root-a-look-at-macos-authopen/
1•joshguthrie•23m ago•0 comments

I Got Tired of Shipping in Silence, So I Built DopaAI

https://www.indiehackers.com/post/i-got-tired-of-shipping-in-silence-so-i-built-dopaai-cec5e3f2ea
1•gingfuu__•24m ago•0 comments

Robbers hold 25 hostage at Naples bank before fleeing through hole in floor

https://www.theguardian.com/world/2026/apr/16/armed-robbers-hostages-naples-bank-flee-hole-floor-...
2•Coral-Tiny•29m ago•0 comments

Agents make you insanely productive, except if you are knowledge worker

https://mrprompty.com/
2•ViktorPetrov•30m ago•1 comments

A History of Teapots and Unix

https://discuss.systems/@thalia/116417242648384997
1•signa11•33m ago•0 comments

Qwen3.6 35B A3B is THE ONE The Local LLM Champ on OpenCode benchmark dashboard [video]

https://www.youtube.com/watch?v=vlo5cxH5CXM
1•grigio•34m ago•0 comments

DockLock Pro – Stop macOS Dock from Jumping Screens

https://docklockpro.com/
1•usui•39m ago•0 comments

OpenAI's GPT-5.4 Pro reportedly solves an open Erdős problem in two hours

https://the-decoder.com/openais-gpt-5-4-pro-reportedly-solves-a-longstanding-open-erdos-math-prob...
2•voisin•40m ago•0 comments

Wikipedia: AI or Not Quiz

https://en.wikipedia.org/wiki/Wikipedia:AI_or_not_quiz
1•alibarber•42m ago•0 comments

ReSyn: A Generalized Recursive Regular Expression Synthesis Framework

https://arxiv.org/abs/2603.24624
1•PaulHoule•42m ago•0 comments

2-day-old GitHub account added AI-generated dependency to Mailgen (2.5k stars)

https://github.com/eladnava/mailgen/pull/86
3•foray1010•44m ago•3 comments

Anti-Amyloid Antibodies for Alzheimer: You Know

https://www.science.org/content/blog-post/anti-amyloid-antibodies-alzheimer-you-already-know
3•u1hcw9nx•50m ago•1 comments

Tesla is facing up to $14.5B in lawsuits – and it's only getting worse

https://electrek.co/2026/04/16/tesla-facing-up-to-14-billion-lawsuits-deep-dive/
6•breve•53m ago•1 comments

The Feeling of Power – Isaac Asimov

https://hex.ooo/library/power.html
3•MSFT_Edging•54m ago•3 comments

Floating Point Fun on Cortex-M Processors

https://danielmangum.com/posts/floating-point-cortex-m/
2•hasheddan•55m ago•0 comments

Local LLM agent with persistent memory and learnable skills

https://github.com/nevenkordic/localmind
1•yotta25•58m ago•0 comments

Interviewing Japanese about Trump's Pearl Harbor Response [video]

https://www.youtube.com/watch?v=jS0ZjVbzGWg
1•keepamovin•58m ago•0 comments