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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/

Pigeonrank hits differently in the LLM era

https://archive.google/pigeonrank/
1•serhei•10s ago•0 comments

From GPU to TPU with Coding Agents: What Works, What Fails, and What It Costs?

https://arxiv.org/abs/2610.34422
1•matt_d•55s ago•0 comments

Moment of Ruby: An Argument for Nothing

https://www.aha.io/engineering/articles/moment-of-ruby-an-argument-for-nothing
1•zemptime•1m ago•0 comments

Kraft Mac & Cheese Now Comes in Cinnamon Roll Flavor

https://parade.com/food/kraft-mac-cheese-just-launched-2-unexpected-new-flavors-and-one-is-inspir...
1•bigwheels•1m ago•0 comments

Pratt parsing is a black box

https://vinipsmaker.github.io/blog/article/pratt-parsing-is-a-black-box/
1•mpweiher•2m ago•0 comments

CISA Retreats from Election Security Ahead of Midterms

https://www.nytimes.com/2026/11/02/us/politics/cisa-election-security-midterms.html
1•gumby•2m ago•0 comments

Headless is the future. Or is it?

https://zlwaterfield.com/blog/headless-is-the-future
1•zlwaterfield•3m ago•0 comments

Make long-running agents faster with message threads

https://claude.com/resources/articles/message-threads
1•piinbinary•4m ago•0 comments

Microsoft's response to compromised eMudhra certificate authority keys

https://www.microsoft.com/en-us/msrc/blog/2026/10/microsoft-response-to-compromised-emudhra-certi...
1•mooreds•5m ago•0 comments

Trump could launch nuclear strike on Iran within days, commentator claims

https://aa.com.tr/en/americas/trump-could-launch-nuclear-strike-on-iran-within-days-commentator-c...
1•Bluestein•5m ago•0 comments

GradeThread – Marketplace Crosslisting App

https://gradethread.com/
1•xdjpearsonx•6m ago•0 comments

Don't Fear Your Competitors

https://ben3d.ca/blog/dont-fear-your-competitors
1•bhouston•6m ago•0 comments

Sill: Any window from your Mac, live on your iPhone and iPad [video]

https://www.youtube.com/watch?v=fJnNkfHLdFw
1•plurby•6m ago•0 comments

The Limits of Algorithmic Assessment of a Person

https://medium.com/@smoking2man/the-limits-of-algorithmic-assessment-of-a-person-from-behavior-re...
1•Aldus551•12m ago•0 comments

AI evals for agents: what they are and how to write them

https://www.evalshift.dev/blog/ai-evals-for-agents
1•nupize•12m ago•0 comments

JiTTesting's Human-on-the-Loop Approach at Full Scale

https://engineering.fb.com/2026/10/29/security/catching-bugs-before-they-land-jittestings-human-o...
1•gmays•14m ago•0 comments

EFF Dice-Generated Passphrases

https://github.com/ncouture/eff-dice/
1•unixnick•16m ago•0 comments

PaidinToken – Open LLM Token Pricing and Local GPU VRAM Calculator

https://www.paidintoken.com/ai/hardware
1•llmpath•21m ago•1 comments

GPU-Accelerated Weight Teleportation

https://humansand.ai/blog/gpu-accelerated-weight-teleportation
2•ezelikman•21m ago•0 comments

Panic and Anger Spread as Europe's Great Pension Covenant Unravels

https://www.wsj.com/world/europe/panic-and-anger-spread-as-europes-great-pension-covenant-unravel...
1•JumpCrisscross•22m ago•1 comments

'I can't sleep': Terror spreads after Trump insider's nuclear attack warning

https://www.rawstory.com/trump-iran-2678184702/
1•throwaway5752•23m ago•1 comments

Database Lives in My House

https://postgresathome.jilles.dev/
1•luispa•23m ago•0 comments

Union Types and Option Types

https://tibleiz.net/blog/2025-03-16-union-types-and-option-types.html
1•g0xA52A2A•25m ago•0 comments

How Voting Is Like a Klein Bottle

https://www.quantamagazine.org/how-voting-is-like-a-klein-bottle-20261026/
2•mrkn1•25m ago•0 comments

Is There Anything Left in the Dream of Cold Fusion?

https://www.quantamagazine.org/is-there-anything-left-in-the-dream-of-cold-fusion-20261102/
1•mrkn1•26m ago•0 comments

Bcbsa Analysis How AI Coding Tools Affect Healthcare Costs

https://www.bcbs.com/about-us/association-news/bcbsa-analysis-ai-coding-tools-affects-healthcare-...
1•coloneltcb•27m ago•0 comments

Bitcoin Suisse CEO: Switzerland has lost interest in cryptocurrencies

https://www.swissinfo.ch/eng/swiss-economy/cryptocurrencies-switzerland-has-lost-interest-says-bi...
2•novaRom•27m ago•0 comments

Voyager 1 probe to hit historic one light-day distance from Earth in 17 days

https://www.tomshardware.com/tech-industry/space/voyager-1-probe-to-hit-historic-one-light-day-di...
2•_____k•28m ago•1 comments

Teaching an LLM a Little Jiu Jitsu

https://maxdemarzi.com/2026/11/02/teaching-an-llm-a-little-jiu-jitsu/
1•maxdemarzi•30m ago•0 comments

Ask HN: What to do about incorrectly suspended GitHub account, no notice?

4•sshah03•31m ago•0 comments