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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•8mo ago

Comments

trane_project•8mo 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/

Project Idea: Carbon and Attentional Footprint of False Urgency

1•funkyfiddler69•2m ago•0 comments

Kīlauea Lava Cricket

https://en.wikipedia.org/wiki/Caconemobius_fori
1•mooreds•2m ago•0 comments

Triton CUDA Tile IR Back End

https://github.com/triton-lang/Triton-to-tile-IR
1•my123•3m ago•0 comments

PlowNYC – track progress of snow removal vehicles in NYC

https://plownyc.cityofnewyork.us
1•ef2k•3m ago•0 comments

Post Quantum Crypto Faster Than Kyber and Bigger Too

https://github.com/ParamTatva-org/abhedyam
1•prabhatkr•3m ago•0 comments

Everyone is wrong about AI and Software Engineering

https://deadneurons.substack.com/p/everyone-is-wrong-about-ai-and-software
2•nr378•3m ago•0 comments

Video Games as Art – Gwern.net

https://gwern.net/video-game-art
2•Antibabelic•3m ago•0 comments

Allowlist for .gitignore

https://blog.izissise.net/posts/gitignoreallowlist/
1•chmaynard•4m ago•0 comments

SkyLaunch – open-source flight training tracker for student pilots

https://github.com/unshah/SkyLaunch.io
1•unshah•7m ago•1 comments

The World Is Hopeful for a Better 2026

https://www.statista.com/chart/28997/respondents-that-are-optimistic-that-next-year-will-be-bette...
1•RickJWagner•8m ago•0 comments

Show HN: Rtty-soda – CLI front end to NaCl (PyNaCl) for encrypting small files

https://github.com/theosaveliev/rtty-soda
2•nett_ef•8m ago•0 comments

ICE Using Palantir Tool That Feeds on Medicaid Data

https://www.eff.org/deeplinks/2026/01/report-ice-using-palantir-tool-feeds-medicaid-data
4•JKCalhoun•9m ago•0 comments

Pebblebed Ventures' AI tool analyzes 20 years of Linux bugs

https://thenewstack.io/hacker-jenny-qus-ai-tool-analyzes-20-years-of-linux-bugs/
2•MilnerRoute•11m ago•0 comments

Show HN: Django-safe-migrations v0.4.0 – Detect unsafe migrations

2•yassershkeir•11m ago•0 comments

From 10 Day Vacation Project to 100k Users: auto‑cpufreq v3 Story

https://foolcontrol.org/?p=5114
2•fooctrl•13m ago•1 comments

Firefox and Linux in 2025

https://mastransky.wordpress.com/2026/01/23/firefox-linux-in-2025/
4•montroser•16m ago•0 comments

Show HN: Kirin – Transparent AI Assistant, Real-Time OCR/AI Insight on Workflow

https://github.com/JoshuaChil/Kirin
2•CodingForFun•17m ago•0 comments

Show HN: Root – Privacy-preserving home security camera

https://rootprivacy.com/blog/building-your-own-security-camera
2•PaulPlay•17m ago•0 comments

39C3 – AI Agent, AI Spy

https://www.youtube.com/watch?v=0ANECpNdt-4
2•todsacerdoti•19m ago•0 comments

Airpark

https://en.wikipedia.org/wiki/Airpark
3•pr337h4m•20m ago•0 comments

FAA institutes nationwide drone no-fly zones around ICE operations

https://www.aerotime.aero/articles/faa-drone-no-fly-zone-ice-dhs
52•dayofthedaleks•21m ago•16 comments

The Game Boy Talk (33c3) [video]

https://www.youtube.com/watch?v=HyzD8pNlpwI
2•tosh•23m ago•0 comments

Will Your AI Teammate Bring Bagels to Standup?

https://redmonk.com/kholterhoff/2026/01/16/will-your-ai-teammate-bring-bagels-to-standup/
5•ohjeez•23m ago•2 comments

Earthquake-detecting seismometers can track falling debris from space

https://hub.jhu.edu/2026/01/22/tracking-falling-space-debris/
2•giuliomagnifico•23m ago•0 comments

Wabans Electronics – Open-Source MP3-Player Project Intro [video]

https://www.youtube.com/watch?v=oABOxNCVlU8
2•4ggr0•26m ago•0 comments

Anthropic keeps redesigning hiring tests as Claude gets smarter

https://www.perplexity.ai/discover/you/anthropic-redesigns-hiring-tes-vAhcrdgiQYiU3h3bssgmlQ
3•game_the0ry•27m ago•0 comments

The personal finance app for everyone (by everyone)

https://sure.am/
3•oktcho•35m ago•0 comments

Spectrum Slit to turn Wi-Fi signals into wall art

https://rootkid.me/works/spectrum-slit
3•Brajeshwar•36m ago•0 comments

The new forensic science of proving what's real

https://www.scientificamerican.com/article/how-digital-forensics-could-prove-whats-real-in-the-ag...
4•Brajeshwar•36m ago•0 comments

How bad is your stove for your health?

https://www.washingtonpost.com/climate-environment/interactive/2026/gas-stoves-no2-lookup/
4•dberhane•36m ago•1 comments