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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/

Show HN: Ghfs – A read-only FUSE filesystem that keeps GitHub issues on disk

https://ghfs.dev/
1•ghfs_dev•1m ago•0 comments

What California Is Learning from Solar Panels Built over Irrigation Canals

https://www.kqed.org/science/2002033/heres-what-california-is-learning-from-solar-panels-built-ov...
1•Jtsummers•2m ago•0 comments

The "Windows XP Box" (2003)

https://www.mini-itx.com/projects/windowsxpbox/
1•doubletwoyou•3m ago•0 comments

Why Apple Succeeded in Japan [video]

https://www.youtube.com/watch?v=vkJU1nmI55I
1•mgh2•4m ago•0 comments

The Home Depot

https://www.acquired.fm/episodes/home-depot
1•vismit2000•7m ago•0 comments

The Cyberpunk Primer – T.R Napper

https://nappertime.com/post-pandemic-world-ultimate-cyberpunk-primer/
1•evo_9•7m ago•0 comments

Amazon blocks Meta's Muse AI assistant

https://www.geekwire.com/2026/amazon-blocks-metas-muse-ai-assistant-in-new-standoff-over-agentic-...
1•colinprince•9m ago•0 comments

China's AI Realism Is Not Conspiracy

https://www.fredgao.com/p/chinas-ai-realism-is-not-conspiracy
1•xpin•11m ago•0 comments

How we use dopamine to get you to spend less time on your phone

https://getisland.app/blog/fire-with-fire/
1•Intragalactic•14m ago•0 comments

New CA laws let community colleges offer up to 12 bachelor's degrees

https://calmatters.org/education/higher-education/2026/09/new-california-laws-community-college-d...
1•lxm•17m ago•0 comments

Francis Fukuyama: Why I Changed My Mind About AI Risk

https://www.persuasion.community/p/why-i-changed-my-mind-about-ai-risk
1•mellosouls•18m ago•0 comments

Smart Ring Maker Oura, Backers Seek $2.2B in US IPO

https://www.bloomberg.com/news/articles/2026-09-21/smart-ring-maker-oura-backers-seek-2-2-billion...
4•elo2000•19m ago•0 comments

OpenAI president and MAGA Inc. donor to attend Trump-Xi state dinner

https://www.politico.com/news/2026/09/21/openai-maga-donor-trump-xi-dinner-01086456
1•Alien1Being•20m ago•0 comments

Put Tabs Away

https://chromewebstore.google.com/detail/leotabs-—-tab-manager-swi/heolckkdeandgagkiefggcneodni...
2•ringlochid•23m ago•0 comments

Ottawa to build sovereign AI ecosystem for Canadian defence operations

https://www.theglobeandmail.com/business/economy/article-ottawa-building-sovereign-ai-ecosystem-f...
1•Teever•24m ago•0 comments

Side-stepping the Secretary Problem, unwittingly

https://www.evalapply.org/posts/side-step-secretary-problem-hiring/index.html
3•pvdebbe•25m ago•0 comments

Turn ad-hoc subagents into durable, accountable AI teams

https://github.com/ringlochid/oh-my-subagents
4•ringlochid•27m ago•0 comments

Cohere and Aleph Alpha sign business combination agreement

https://cohere.com/blog/cohere-and-aleph-alpha-sign-agreement
2•diegocstn•29m ago•1 comments

The Inference Gap

https://twitter.com/Lon/status/2101034933284417614
1•Jimega36•34m ago•1 comments

Ju Ju Tsu

https://arialdo.codeberg.page/ju-ju-tsu/
1•hn92726819•35m ago•1 comments

Privacy Tools Experts Use

https://proton.me/blog/privacy-tools-experts-use
3•devonnull•36m ago•0 comments

Ticket-In Ticket-Out

https://en.wikipedia.org/wiki/Ticket-in,_ticket-out
2•suopspaces•37m ago•0 comments

Show HN: An honest comparison of the Agent Harness vs. six alternatives

https://time2magic.com/agent-harness
1•bishopz•42m ago•0 comments

Before and After Photos Show Data Centers Furiously Popping Up Across America

https://petapixel.com/2026/09/19/before-and-after-photos-show-data-centers-furiously-popping-up-a...
1•andsoitis•43m ago•0 comments

Breaking a four year hiatus to talk about the export keyword (PEPs 842 and 843)

https://aroberge.blogspot.com/2026/09/breaking-four-year-hiatus-to-talk-about.html
1•lumpa•43m ago•0 comments

Show HN: Primescript – Academic Markdown editor with vector search and LaTeX

https://primescript.com
1•mac-r•43m ago•0 comments

Show HN: A Mondrian-style puzzle block game

https://game.wdamao.com/mondrian-blocks/
1•wdamao•45m ago•1 comments

A Calendar of Smells

https://worldsensorium.com/a-calendar-of-smells/
1•dnetesn•45m ago•0 comments

A space war played in SQL

https://schemaverse.com/
1•thunderbong•46m ago•0 comments

Solitaire Alone Together

https://eieio.games/blog/solitaire-alone-together/
1•anitil•46m ago•2 comments