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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/

Seven LAWS the animal farm revisted

https://www.mureka.ai/song-detail/4rkp25fs4iUJv4ej35LjrF?is_from_share=1
1•silvestromedia•28s ago•0 comments

Keep Your Windows Closed or Open During a Heatwave?

https://www.the-independent.com/life-style/health-and-families/windows-open-shut-closed-heatwave-...
1•dtj1123•41s ago•0 comments

"China's version of Mythos" unveils

https://www.techradar.com/pro/security/chinese-cybersecurity-company-360-unveils-chinas-version-o...
1•Alifatisk•51s ago•0 comments

Show HN: I built a keyboard-first window switcher for macOS

https://github.com/gouwsxander/Reef
1•xandergouws•59s ago•0 comments

Show HN: FPGA design acceleration – idiomatic Python to synthesizable Verilog

https://holoso.digital
1•spym_•1m ago•0 comments

Show HN: GemmaTrans – On-device translation for macOS, built with MLX

https://github.com/Rand01ph/gemma-trans
1•Rand01ph•3m ago•0 comments

Impact of Screen Time, Media&Technology Use on Under 2s during first 1001 Days [pdf]

https://static1.squarespace.com/static/68230d36099adb5f88e3536f/t/6a3d5230859005198ef50f68/178240...
1•bookofjoe•4m ago•0 comments

Vessel – Agentless, local-first VPS control plane in Tauri and Rust

https://github.com/shihebamrii/vessel
2•shihebamrii•7m ago•0 comments

Zuckerberg's Increasingly Bizarre War on Whistleblowers

https://pluralistic.net/2026/06/27/zuckerstreisand-2/
3•HotGarbage•11m ago•0 comments

Show HN: Proton a Pure go, no CGO GUI library for building applications

https://protonlib.pages.dev/
2•CzaxTanmay•11m ago•0 comments

Corv: An SSH client for AI agents (and humans)

https://github.com/khalid-src/corv-client
2•khalid_0002•11m ago•1 comments

Show HN: Looking for help finishing up my privacy focused web scrapper

https://github.com/bilbywilby/god_stack
2•EddieMunsterrr•12m ago•0 comments

AI Anxiety Is Fueling Burnout Across Silicon Valley's Tech Workers

https://www.bloomberg.com/news/articles/2026-06-26/ai-anxiety-is-fueling-burnout-across-silicon-v...
3•littlexsparkee•12m ago•1 comments

Completion Rate Is a Vanity Metric

https://www.formaly.io/blog/completion-rate-is-a-vanity-metric
2•Arindam1729•12m ago•0 comments

Logical Physical Clocks and Consistent Snapshots in Globally Distributed DB [pdf]

https://cse.buffalo.edu/tech-reports/2014-04.pdf
2•teleforce•14m ago•0 comments

Show HN: The stock research terminal that remembers

https://finqos.com
2•marmmaz•17m ago•0 comments

Data Privacy while using API tools

3•11shyam11•17m ago•1 comments

Anonymous GitHub account mass-dropping undisclosed 0-days

https://github.com/bikini/exploitarium
6•binyu•18m ago•0 comments

Miglite – raw SQL migrations for Go projects

https://inhere.github.io/en/blog/2026/gookit-miglite-intro/
2•jxia•19m ago•0 comments

Why Germany's Deutsche Bahn will face delays for many years

https://www.dw.com/en/why-germanys-deutsche-bahn-will-face-delays-for-many-years/a-77721079
2•rustoo•21m ago•1 comments

Permissive vs. Copyleft Open Source

https://shazow.net/posts/permissive-vs-copyleft/
2•vortex_ape•23m ago•0 comments

We Can Fly

https://silvestro2026.substack.com/p/we-can-fly
3•silvestromedia•24m ago•0 comments

Post-Mythos Cybersecurity: Keep calm and carry on

https://cephalosec.com/blog/cybersecurity-in-the-post-mythos-era-keep-calm-and-carry-on/
8•Versipelle•25m ago•2 comments

We refactored half the business to fix a janky script

https://swizec.com/blog/code-is-the-easy-part-or-how-we-refactored-half-the-business-to-fix-a-jan...
2•mooreds•25m ago•0 comments

The Bottleneck Strikes Again

https://cutlefish.substack.com/p/tbm-427-the-bottleneck-strike-again
2•mooreds•26m ago•0 comments

Autonomous AI Software Development: Good Idea, or Bad Idea?

https://adrianavillela.com/post/the-great-autonomous-ai-experiment/
3•mooreds•26m ago•0 comments

SmartGit 26.1

https://www.smartgit.dev/whats-new/26_1/
2•wnesensohn•28m ago•0 comments

Netflix Simplified Batch Compute with Kueue

https://netflixtechblog.com/how-netflix-simplified-batch-compute-with-kueue-87860682629c
2•dalvrosa•28m ago•0 comments

Data Access Patterns That Makes Your CPU Really Angry

https://blog.weineng.me/posts/slowest_add
2•weineng•29m ago•0 comments

An "infovore" shares his chats

https://chatgptpro.substack.com/p/tyler-cowen
4•jger15•36m ago•0 comments