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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/

I Can't See Apple's Vision

https://matduggan.com/i-cant-see-apples-vision/
1•carlesfe•50s ago•0 comments

Quantum experiment shows events may have no fixed order

https://phys.org/news/2026-03-quantum-events.html
1•pseudolus•1m ago•0 comments

The Listener

https://www.brainbun.com/blog/the-listener/
1•brainbun•3m ago•0 comments

CIS AWS v3.0: Automate Compliance with Terraform

https://haitmg.pl/blog/cis-aws-benchmark-automation/
1•gebalamariusz•4m ago•0 comments

the html review 05

https://thehtml.review/05/
1•keepamovin•5m ago•0 comments

More Students Use AI for Homework, and More Believe It Harms Critical Thinking

https://www.rand.org/pubs/research_reports/RRA4742-1.html
1•the-mitr•6m ago•0 comments

CSV to Transformer, via Bayesian Networks

https://github.com/area9innovation/bp2transformer
1•asgeralstrup•12m ago•1 comments

Interview with John Earnest

https://alexalejandre.com/programming/interview-with-john-earnest/
1•tosh•12m ago•0 comments

An Open-World Engine for the N64

https://www.youtube.com/watch?v=lXxmIw9axWw
1•QuantumNomad_•12m ago•0 comments

The illusion of illusions: There are no optical corrections in the Parthenon

https://arxiv.org/abs/2510.16831
2•geox•15m ago•0 comments

Ralphex: Write a Plan. Walk Away

https://ralphex.com/
1•souvlakee•16m ago•0 comments

Chicago Kare by Duane King

https://chicagokare.xyz/
1•keepamovin•16m ago•0 comments

microui: A tiny immediate-mode UI library

https://github.com/rxi/microui
1•tosh•18m ago•0 comments

Trump Administration Plans to Require Higher Wages for H-1B Visa Holders

https://www.wsj.com/politics/policy/trump-administration-plans-to-require-higher-wages-for-h-1b-v...
1•cebert•18m ago•0 comments

How I vibe-code 10 web services from anywhere

https://www.blynt.com/blog/vibe-coding-from-everywhere/
2•blynt•18m ago•0 comments

How I work without a mouse

https://plo.fyi/blog/working-without-a-mouse/
1•ploMP4•19m ago•0 comments

Druids: Batteries-included library to coordinate and deploy coding agents

https://druids.dev/welcome
2•isaacimagine•20m ago•0 comments

(A Few) Ops Lessons We All Learn the Hard Way

https://netmeister.org/blog/ops-lessons.html
1•rayhaanj•21m ago•0 comments

It's 2026 and infrastructure DevEx is still lacking

https://grafosai.substack.com/p/its-2026-and-infrastructure-devex
1•souvlakius•22m ago•0 comments

I Think Software Development Will Be Automated by 2030

https://blog.vtemian.com/talk/will-ai-automate-the-sdlc-by-2030/
1•vtemian•22m ago•1 comments

Stripe builds interactive docs with Markdoc

https://stripe.dev/blog/markdoc
1•cezarvil•26m ago•0 comments

Spawning VMs for unreasonable workloads (2024)

https://blog.davidv.dev/posts/abusing-firecracker/
1•tlar•26m ago•0 comments

Claude API Error: 529

4•anujbans•26m ago•3 comments

How to Setup Pie for PHP Extensions on macOS

https://stephenjude.me/articles/how-to-setup-pie-for-php-extensions-on-macos
1•stehenjude•28m ago•0 comments

Show HN: Mrxl – Compile Mermaid diagrams into Excel (.xlsx)

https://github.com/v420v/mrxl
1•ibuki256•30m ago•0 comments

mlx-Code: Run Claude Code Locally with MLX-LM

https://www.youtube.com/watch?v=Rba-uTsYuXg
2•JosefAlbers•34m ago•1 comments

I was paid to write fake Google reviews – then my 'bosses' tried to scam me

https://www.theguardian.com/technology/2026/mar/27/paid-write-fake-google-reviews-scammer-cryptoc...
2•mykowebhn•37m ago•0 comments

Study: Space no gravity negatively impact sperm navigation, affecting childbirth

https://adelaideuni.edu.au/about/news/2026/human-sperm-may-get-lost-in-space/
2•giuliomagnifico•41m ago•0 comments

Show HN: HTML Viewer with Bidirectional Highlighting (Code ↔ Highlight Element)

https://html-viewer.org
1•jackxmm•41m ago•0 comments

Blog: Book on AI Agents for the Layman

https://www.investigatingsoftware.co.uk/2026/03/the-best-book-on-ai-agents-for-layman.html
2•phoughton•44m ago•0 comments