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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/

Splinter Cell veteran says realistic modern lighting has screwed up stealth game

https://www.rockpapershotgun.com/splinter-cell-veteran-says-realistic-modern-lighting-has-screwed...
1•Tomte•17s ago•0 comments

Weight loss drugs could save airlines money on fuel as Americans slim down

https://www.cbsnews.com/news/weight-loss-drugs-glp1s-airlines-fuel-costs/
1•mattas•5m ago•1 comments

Everlane Finalizes Sale to Shein

https://www.nytimes.com/2026/05/22/style/shein-everlane-fast-fashion-sustainability.html
1•lxm•7m ago•0 comments

Robotaxis Aren't as Autonomous as They Seem

https://junkoyoshidaparis.substack.com/p/robotaxis-arent-as-autonomous-as
1•mattas•8m ago•0 comments

Kids are Graduating Without Being Able to Read [video][34 mins]

https://www.youtube.com/watch?v=PcSApLcxpYc
1•Bender•11m ago•0 comments

Workspace Orchestration

https://hyperspeed.work
2•Asadsangabi•17m ago•0 comments

DeepSeek-V4 KV Cache Explained: Why 1M Context Uses Less VRAM

https://knightli.com/en/2026/05/18/deepseek-v4-kv-cache-compressed-attention/
1•vinhnx•19m ago•0 comments

Lynote Humanize Text – Open-source AI text humanization toolkit

https://github.com/lynote-ai/humanize-text
2•Danny6969•20m ago•0 comments

MetalBench – Benchmark for Apple Silicon's Metal Shading Lang

https://github.com/Lazarus-931/MetalBench
1•AlazarManakelew•26m ago•1 comments

Irb-autosuggestions: Fish-like autosuggestions for irb

https://github.com/unurgunite/irb-autosuggestions
1•thunderbong•28m ago•0 comments

GKN Aerospace – Hazard Zone Simulator - Garden Grove Chemical Tank Emergency

https://joevezzani.github.io/hazard-zone-sim/
1•palidanx•29m ago•0 comments

Sign in Nobody Wants AI Anymore [video][12 mins]

https://www.youtube.com/watch?v=FQpZdCKgc6w
2•Bender•31m ago•0 comments

AI Has Taken over Open Source

https://socket.dev/blog/ai-has-taken-over-open-source
1•ChicknNuggt•37m ago•1 comments

How to Teach AI the "Taste"

2•Jasonwang123•39m ago•1 comments

Code-mapper: Free CLI tool to reduce LLM token usage on any codebases

https://github.com/damien220/code-mapper
3•Damien_220•41m ago•0 comments

The Mystical Meaning of 369 and Its Link to Nikola Tesla

https://www.mentalfloss.com/random-facts/meaning-number-369-nikola-tesla
2•anujbans•45m ago•0 comments

Important Update: Transitioning Bitnami Offerings on AWS

https://community.broadcom.com/tanzu/blogs/beltran-rueda-borrego/2026/05/20/important-update-tran...
1•zoptie•59m ago•1 comments

Ask HN: Have you seen Star Wars The Mandalorian and Grogu,nice CGI, no storyline

1•eagle10ne•1h ago•0 comments

China Launches Manned Spaceship on Mission Orbit Tiangong Space Station [video]

https://www.youtube.com/watch?v=Qk-IZODWUzM
1•Bender•1h ago•0 comments

D. Trump Jr. and Eric Trump Running Felony Fraud Scheme Prosecutable in New York

https://cmarmitage.substack.com/p/donald-trump-jr-and-eric-trump-are
18•JumpCrisscross•1h ago•3 comments

Geopolitical Technicals

1•almogodel•1h ago•1 comments

Global AI Diffusion: Q1 2026 Trends and Insights [pdf]

https://www.microsoft.com/en-us/research/wp-content/uploads/2026/05/Microsoft-AI-Diffusion-Report...
3•gmays•1h ago•1 comments

Ravens Don't Follow Wolves, They Predict Their Patterns

https://scitechdaily.com/ravens-dont-follow-wolves-they-predict-them/
1•Gaishan•1h ago•0 comments

NymphCast – Libre Multicast DNS Media Streaming to Any Device

https://github.com/MayaPosch/NymphCast
1•righthand•1h ago•1 comments

Freediving, Embodiment and Humanity – Joanna Rutkowska

https://tracesofhumanity.org/freediving-embodiment-and-humanity/
1•transpute•1h ago•0 comments

How Telescope Rancher Became the Hot New Job in Texas

https://www.youtube.com/watch?v=bN48vEqaQs8
2•colinbartlett•1h ago•0 comments

Ghost CMS SQL injection flaw exploited in large-scale ClickFix campaign

https://www.bleepingcomputer.com/news/security/ghost-cms-sql-injection-flaw-exploited-in-large-sc...
3•sbulaev•1h ago•0 comments

HN: Silau – AI detects employee burnout"

1•silau•2h ago•2 comments

Army runs secret wargames under central London

https://www.bbc.com/news/articles/c2e2vjl2ry8o
3•Vermin2000•2h ago•1 comments

The Morale of Tech Workers Is Plunging as Layoffs Mount

https://www.nytimes.com/2026/05/19/business/tech-layoffs-blind.html
8•bookofjoe•2h ago•6 comments