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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/

Gen Z workers who fear AI will take their job actively sabotaging its rollout

https://fortune.com/2026/04/08/gen-z-workers-sabotage-ai-rollout-backlash/
2•9woc•9m ago•0 comments

Tabularis: A lightweight, cross-platform database client. Hackable with pkugins

https://github.com/debba/tabularis
1•thunderbong•10m ago•0 comments

Flowyble Studio – Run Claude, Copilot and Codex Side-by-Side

https://flowyble.com/studio
1•schizi•10m ago•0 comments

The Munro Lecture with Adam Tooze – April 8 2026 [video]

https://www.youtube.com/watch?v=Th1pZfKi4SI
1•hackandthink•12m ago•0 comments

Energy-Based Models Is All You Need

https://www.youtube.com/watch?v=h9Gkchqr__M
1•frag•13m ago•0 comments

The Infinity Man: Demis Hassabis, Colleagues and Rivals

https://thechipletter.substack.com/p/the-infinity-man
1•klelatti•13m ago•0 comments

Mark's Magic Multiply

https://wren.wtf/shower-thoughts/marks-magic-multiply/
1•luu•15m ago•0 comments

Give Your Agent a Canvas, Not Just a Chatbox

https://create0.ai
1•enha•18m ago•0 comments

The Great GPU Shortage: H100 Rental Prices Up 40%

https://newsletter.semianalysis.com/p/the-great-gpu-shortage-rental-capacity
2•alecco•18m ago•0 comments

Due Diligence Framework Before Your Business Commits to Open Source

https://groundblue.gumroad.com/l/nlzhlx
1•elsadek•19m ago•0 comments

Show HN: I missed my terminal so I rebuilt email

https://tallyman.io
3•Mechse•20m ago•0 comments

AIYO Wisper – Local voice-to-text for macOS (WhisperKit, open source)

https://github.com/Aiyo28/aiyo-wisper
1•Aiyo28•24m ago•0 comments

What We Learned Building a Rust Runtime for TypeScript

https://encore.dev/blog/rust-runtime
1•vinhnx•25m ago•0 comments

Rust terminal projects in 3 years

https://blog.orhun.dev/800-rust-projects/
1•vinhnx•26m ago•0 comments

How AI Is Reimagining the Game of Golf–For Both Players and Courses

https://www.wsj.com/sports/golf/ai-in-golf-technology-impact-4122d0e1
2•thm•28m ago•0 comments

The tragedy of leisure

https://www.ft.com/content/b91b739e-2164-463c-a8e0-54b59650a9f9
2•pramodbiligiri•36m ago•0 comments

State of Utopia passes its first law

https://stateofutopia.com/laws/1/law1.html
1•logicallee•37m ago•2 comments

EU fingerprint and photo travel rules come into force

https://www.bbc.co.uk/news/articles/c39rkpe8mj2o
3•zeristor•37m ago•0 comments

Umeshism

https://scottaaronson.blog/?p=40
2•yawboakye•37m ago•0 comments

Artemis II is competency porn

https://lizplank.substack.com/p/artemis-ii-is-competency-porn-and
2•jgrodziski•43m ago•0 comments

Why you need to replace your native macOS screenshot app?

https://snapkeep.webytes.net/
1•Mohamm6d•43m ago•1 comments

Automated Browser Testing with MCP

https://en.wikipedia.org/wiki/Test_automation
2•jacksonkasi•49m ago•0 comments

Kaze Emanuar: Illegal 3D Rendering Techniques (N64) [video]

https://www.youtube.com/watch?v=xIUkoUEMf_g
1•tnelsond4•51m ago•0 comments

Picasso's Guernica (Gigapixel)

https://guernica.museoreinasofia.es/gigapixel/#3/63.11/-120.59
2•guigar•52m ago•0 comments

Show HN: LSM Trees: MemTable, Compaction, and the Amplification Triangle [video]

https://www.youtube.com/watch?v=rOC7jkN748w
1•rcron•52m ago•0 comments

France's government is ditching Windows for Linux, says US tech a strategic risk

https://www.xda-developers.com/frances-government-ditching-windows-for-linux/
5•pabs3•53m ago•1 comments

Reverse Engineering File Format Steganography Chain of the TeamPCP Attack

https://husseinmuhaisen.com/blog/reverse-engineering-teampcp-telnyx-file-format-chain/
1•husseinmuhaisen•54m ago•1 comments

GazeFollow from Scratch

https://github.com/aldipiroli/GazeFollow_from_scratch/tree/main
2•tgnk2341•54m ago•0 comments

Incremental Compilation with LLVM

https://ziglang.org/devlog/2026/#2026-04-08
1•birdculture•56m ago•0 comments

I built a skill manager for AI agents. The agents install the skills themselves

https://github.com/nattergabriel/reseed
3•eterer•58m ago•1 comments