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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/

Epigenetic reprogramming as a key to reverse ageing and increase longevity

https://pubmed.ncbi.nlm.nih.gov/38272265/
1•andsoitis•2m ago•0 comments

Ask HN: Those still optimistic about a career in software – why?

1•cipherdc•14m ago•2 comments

Donut math: how donut.c works (2011)

https://www.a1k0n.net/2011/07/20/donut-math.html
1•azhenley•19m ago•0 comments

Attention Developers: New Open IssueTracker Ticket on Data Deletion Fraud

https://issuetracker.google.com/issues/557281747
1•Bitu79•20m ago•0 comments

Show HN: Gigantic Research, Friend

1•KnoxProtocol•24m ago•1 comments

A Mathematical Theory of Communication [pdf]

https://people.math.harvard.edu/~ctm/home/text/others/shannon/entropy/entropy.pdf
1•andsoitis•25m ago•0 comments

PL Education in the Age of AI: Interview with Shriram Krishnamurthi

https://www.typetheoryforall.com/episodes/pl-education-in-the-age-of-ai
1•gnyeki•28m ago•0 comments

Equal Earth: Explore the world interactively with the Equal Earth map

https://kuboon.github.io/equal-earth/
1•nogajun•28m ago•0 comments

Has anybody seen my keys? A key-hierarchy strategy for rack-level security

https://rfd.shared.oxide.computer/rfd/0301
2•cyb0rg0•31m ago•0 comments

P&G goes wide with a waterless, plastic-free Tide

https://trellis.net/article/pg-water-plastic-out-of-tide-detergent/
1•plun9•32m ago•0 comments

ripwire: ripgrep of AI context (CLI+MCP) giving coding agents a map of any repo

https://github.com/redhat-et/ripwire
2•guessmyname•34m ago•0 comments

How I make games in Batch Script: Multithreading

https://github.com/thelowsunoverthemoon/BatchArticles/blob/main/HowIMakeGamesInBatchScriptP1.md
1•lowsun•35m ago•0 comments

Portal Speedrunners Discover "Singularity Warp" After 18 Years [video]

https://www.youtube.com/watch?v=a9c4jrgfhsk
1•aw1621107•41m ago•1 comments

Cost of running agent memory/vector search

https://polign.com/agent-memory-at-scale
2•anuptalwalkar•41m ago•0 comments

A Rogue AI Swarm Could Hide Inside an AI Company [video]

https://www.youtube.com/watch?v=xRKOpMeEQgQ
3•alwillis•42m ago•0 comments

Why We Need a Return to Élan

https://www.joanwestenberg.com/p/why-we-need-a-return-to-elan
1•Ariarule•54m ago•0 comments

Runic SSH – Open-Source SSH/SFTP Client in Rust and Tauri

https://github.com/marciopaiva/runic-ssh
1•marciopaiva•56m ago•0 comments

Anthropic Has Committed More Than $100B to AWS

https://www.fool.com/investing/2026/09/06/anthropic-has-committed-more-than-usd100-billion-to-aws...
1•geoffbp•56m ago•0 comments

The Coming Merging of Mind and Machine (1999)

https://www.thekurzweillibrary.com/the-coming-merging-of-mind-and-machine
2•thedreammachine•1h ago•0 comments

Fauxnix – bash for AI agents on Windows, no WSL (we measured the PS tax)

https://github.com/20000419/fauxnix
1•cl0602830•1h ago•0 comments

Ask HN: Perplexity Pro vs. Claude – what are you paying for?

1•daytonflyers•1h ago•0 comments

Everyone is right about AI

https://formasimplex.com/blog/2026-09-06-Everyone-is-right-about-AI.html
3•wsintra•1h ago•0 comments

Show HN: GET Together – A social network where you don't need POST to Post

https://gettogether.dev
6•nchudleigh•1h ago•0 comments

Aardman (Wallace and Gromit) Is Selling Its Original Movie Puppets

https://gizmodo.com/aardman-is-selling-its-original-movie-puppets-this-month-2000807968
4•Gaishan•1h ago•0 comments

I built a (wacky) date string utility

https://progressier.com/iso-date-string-toolkit
2•kbst•1h ago•1 comments

Software for One

https://christophermeiklejohn.com/ai/personal/programming/2026/09/06/software-for-one.html
2•azhenley•1h ago•0 comments

Opened the source of my game (multiplatform autobattler)

https://github.com/lfarroco/mana-game
2•lfarroco•1h ago•1 comments

Americans Without Degrees Are Having One of the Best Job Markets in Years

https://www.wsj.com/lifestyle/careers/americans-without-college-degrees-are-having-one-of-the-bes...
9•JumpCrisscross•1h ago•4 comments

Mirror Life Is Theoretical - The Danger Is Anything But

https://www.rand.org/pubs/commentary/2026/08/mirror-life-is-theoretical-the-danger-is-anything-bu...
3•jonbaer•1h ago•0 comments

Ponytail: Lazy Senior Engineer Skill

https://ponytail.dev/
30•zatkin•1h ago•17 comments