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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/

Tomb Raider Studio Faces Fourth Round of Layoffs in Just 12 Months

https://kotaku.com/tomb-raider-remake-crystal-dynamics-layoffs-2000680096
1•PaulHoule•1m ago•0 comments

Atlassian's new data collection policy protects rich customers, AI eats the rest

https://www.theregister.com/2026/04/18/atlassians_new_data_collection_policy/
1•Bender•2m ago•0 comments

Venice AI – private and unbiased AI

https://venice.ai/
1•t0bia_s•2m ago•0 comments

Convolutional neural networks in APL (2019)

https://dl.acm.org/doi/10.1145/3315454.3329960
1•tosh•7m ago•0 comments

Type-level invariants in the Spectre Programming Language

https://spectre-docs.pages.dev/type-system-expanded#type-level-invariants
1•death_eternal•7m ago•0 comments

KV the Apostate

https://queue.acm.org/detail.cfm?id=3806209
1•jruohonen•7m ago•0 comments

A new study found that AI has a higher impact in the home than in the office

https://www.computerworld.com/article/4159817/ai-is-finally-delivering-productivity-for-remote-em...
1•mikelgan•9m ago•2 comments

Productivity gains with an AI-based IDE at Google

https://arxiv.org/abs/2601.19964
1•azhenley•9m ago•0 comments

Show HN: Link Shortener – Itlinks.me

https://itlinks.me
2•IgorStojanov•17m ago•0 comments

When U.S. Air Force discovered the flaw of averages (2016) [pdf]

https://noblestatman.com/uploads/6/6/7/3/66731677/cockpit.flaw.averages.pdf
1•tosh•18m ago•0 comments

A certain enchanted forest is inhabited by talking birds

https://wiki.xxiivv.com/site/logic.html
2•tosh•27m ago•0 comments

The Trajectory of Artificial Intelligence

https://medium.com/@MachineCognitionLabs/the-trajectory-of-artificial-intelligence-cab899ed5d27
1•MO-379•29m ago•1 comments

The Only Two Markup Languages

https://www.gingerbill.org/article/2026/01/19/two-families-of-markup-languages/
2•birdculture•30m ago•0 comments

10 years: Stephen's Sausage Roll still one of the most influential puzzle games

https://thinkygames.com/features/10-years-of-grilling-stephens-sausage-roll-remains-one-of-the-mo...
1•tobr•34m ago•0 comments

Show HN: Great Apps

https://greatapps.net/
1•IgorStojanov•37m ago•0 comments

Claude Code Opus 4.7 keeps checking on malware

2•decide1000•42m ago•0 comments

GitHub Copilot EU data residency

https://github.blog/changelog/2026-04-13-copilot-data-residency-in-us-eu-and-fedramp-compliance-n...
1•whirlwin•42m ago•1 comments

My AI thinks civics is black studies

https://hollisrobbinsanecdotal.substack.com/p/my-ai-thinks-civics-is-black-studies
2•HR01•47m ago•1 comments

Workers say they're drowing in "workslop"

https://www.theguardian.com/technology/2026/apr/14/ai-productivity-workplace-errors
2•rwmj•47m ago•0 comments

One Person's Trash on the Joys of Collecting Junk

https://lithub.com/one-persons-trash-on-the-joys-of-collecting-junk/
1•herbertl•47m ago•0 comments

StenoKeyboards

https://stenokeyboards.com/
1•usdogu•48m ago•0 comments

Deals on Software

https://www.dealsonsoftware.com/
1•IgorStojanov•50m ago•0 comments

Just let me compute in peace

https://neilzone.co.uk/2026/04/just-let-me-compute-in-peace/
2•miniBill•51m ago•0 comments

Stanford scientists discover "natural Ozempic" without side effects

https://www.nature.com/articles/s41586-025-08683-y
6•stevenjgarner•52m ago•2 comments

Supreme Court Shadow Docket

https://www.nytimes.com/2026/04/18/us/politics/supreme-court-shadow-docket.html
4•MintyPyro•57m ago•0 comments

To Beat China, Embrace Open-Source AI

https://www.wsj.com/opinion/to-beat-china-embrace-open-source-ai-a211bf59
2•sam345•59m ago•0 comments

Private Prosecution of Israeli Soldier Thrown Out

https://www.uklfi.com/private-prosecution-of-israeli-soldier-thrown-out
2•EvgeniyZh•1h ago•0 comments

The Story of Mel (1983)

http://www.catb.org/jargon/html/story-of-mel.html
2•SergeAx•1h ago•0 comments

Claude Opus 4.7 Intelligence, Performance and Price Analysis

https://artificialanalysis.ai/models/claude-opus-4-7
30•Topfi•1h ago•1 comments

An Electronic Conversationalist (and the Machine Replied...) (1962)

https://archive.org/details/DTIC_AD0400016
1•the-mitr•1h ago•0 comments