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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/

Ask HN: Why are Claude models so verbose?

1•JacobWolf•3m ago•0 comments

Xiaomi's Xring Series suggests more OEM's switching to in-house SoCs

1•StizzurpXDD•3m ago•0 comments

Perplexity's Portable Computer tackling local AI services market

https://www.theregister.com/ai-and-ml/2026/08/26/now-perplexity-is-trying-to-get-into-the-local-a...
1•Gaishan•4m ago•0 comments

Running out of money': Kraft, McDonald's, Whirlpool CEOs flag consumer concern

https://finance.yahoo.com/economy/articles/running-money-kraft-mcdonald-whirlpool-114500035.html
1•MrJagil•4m ago•0 comments

BanglaTools – Bengali Unicode and Bijoy text conversion tools

https://banglatools.com/
1•btref26hn•5m ago•0 comments

Front end skill pack for AI agents, with machine-enforced quality gates

https://krishna-modi12.github.io/frontend-design-pro/
1•KrishnaModi12•6m ago•0 comments

Show HN: LLM-powered webapp to build LLM-powered webapps

https://codeplusequalsai.com/dashboard
1•cryptoz•8m ago•0 comments

Secret Cold War IBM Supercomputer Was Built for One Job

https://spectrum.ieee.org/cold-war-codebreaker-nsa-ibm
1•jnord•9m ago•0 comments

Portable Computer: Local-First AI

https://www.perplexity.ai/hub/products/portable-computer
1•Garbage•9m ago•0 comments

Show HN: Propose and Dual-Control for DNS Changes

https://www.loom.com/share/16dff02ee5604b7daf3ebc7c9c93d8a4
1•xinbenlv•12m ago•0 comments

Tell HN: HN Was Down

2•dhruv3006•14m ago•0 comments

$234B in Enterprise Application Software Spend at Risk from Agentic AI

https://www.gartner.com/en/newsroom/press-releases/2026-07-01-gartner-says-us-dollars-234-billion...
2•theshrike79•14m ago•0 comments

Show HN: Openspender gives your agents wallets

https://openspender.com/
2•KrishnaMadala•15m ago•0 comments

Handwritten Blog

https://handwritten.danieljanus.pl/
3•eric_khun•15m ago•1 comments

'Moronic' video deal buys Google legal woes? (2006)

https://www.theregister.com/on-prem/2006/10/10/moronic-video-deal-buys-google-legal-woes/1043392
3•dotcoma•15m ago•0 comments

One liner install self hosting email solution

https://github.com/luoxiprovo/bearmail
2•luoxi24us•16m ago•0 comments

"A" for "Average"

https://stitcher.io/blog/a-for-average
1•brentroose•16m ago•0 comments

SaaS Isn't Dead. Sameness Is

https://aicoding.leaflet.pub/3mtu6c5wsvc2n
1•theshrike79•16m ago•0 comments

As world rages over Flock, SLC creates new rules for its license plate readers

https://www.sltrib.com/news/2026/08/25/flock-isnt-used-slc-utahs-capital/
1•grahamburger•17m ago•0 comments

The Connections That Turned a Precocious Teen into the Fallen Nostradamus of AI

https://www.wsj.com/tech/ai/situational-awareness-leopold-aschenbrenner-ai-fund-4dbb00a4
1•chvid•17m ago•1 comments

Defunct Nuclear Site Had a Meltdown in 1959. It's Still Causing Health Problems

https://gizmodo.com/a-defunct-nuclear-site-had-a-meltdown-in-1959-a-new-study-shows-its-still-cau...
1•gumby•18m ago•0 comments

Hacker News Down

6•areofyl•20m ago•8 comments

Suica, Japan's First IC Transit Card

https://www.tokyodev.com/articles/the-story-of-suica
1•pwim•25m ago•0 comments

Memory Ordering in CPUs

https://fgiesen.wordpress.com/2026/08/25/memory-ordering-in-cpus/
2•Tomte•54m ago•0 comments

Placemark is now open source

https://macwright.com/2026/08/25/placemark-fully-open-source
1•Tomte•54m ago•0 comments

Run Open Models on Claude Desktop

https://ollama.com/blog/claude-desktop
1•ttunguz•1h ago•0 comments

Pilot program offering free bus rides to Detroit students to become permanent

https://www.detroitnews.com/story/news/local/detroit-city/2026/08/14/sheffield-makes-free-ddot-tr...
2•thunderbong•1h ago•0 comments

Ask HN: How do you explain system design to engineers who weren't in the room?

2•pandurang90•1h ago•1 comments

Kraftapp AI – Describe it. We build it. Customers find it

https://kraftapp.ai
1•ssurse•1h ago•0 comments

Show HN: Hands-on Docker security labs, from CIS checks to AI context poisoning

https://github.com/opscart/docker-security-practical-guide
1•opscart•1h ago•0 comments