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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/

Alibaba bans Claude Code as a security risk

https://www.scmp.com/tech/big-tech/article/3359375/alibaba-bans-staff-using-claude-code-over-anth...
1•5701652400•59s ago•0 comments

Scientists say they have built a cell from scratch for the first time

https://www.cnn.com/2026/07/01/science/synthetic-cell-research
1•giuliomagnifico•1m ago•0 comments

What Happens When Your Site Goes Down?

https://urlwatch.io/
1•mssblogs•3m ago•0 comments

How AI models would vote in Sweden

https://www.nordan.ai/research/which-swedish-party-do-llms-vote-for
1•urvader•4m ago•0 comments

California Bans 'Sell by' Labels, Hoping to Cut Food Waste

https://www.nytimes.com/2026/07/02/us/california-food-labels-sell-by.html
1•thunderbong•4m ago•0 comments

Movies I've watched. (623 recorded and counting)

https://artconnects.club/u/bora/movies
1•kaizenb•7m ago•1 comments

EOL DR / End-of-Life Disaster Response

https://github.com/potatoqualitee/eol-dr
1•chris_wot•16m ago•0 comments

Heat wave exposes workers to injury and death

https://www.wsws.org/en/articles/2026/07/03/yash-j03.html
1•t-3•19m ago•1 comments

David Beazley – Programming Courses

https://www.dabeaz.com/courses.html
1•gregsadetsky•20m ago•0 comments

Show HN: An Omegle for Day Trading

https://strangertrade.fly.dev/
1•avneh•21m ago•0 comments

Show HN: FinMav – Screen 3,000+ stocks by describing what you want in English

https://www.finmav.ai
1•amanuelse•22m ago•0 comments

2026 Unslop AI-Written Fiction Contest Results (judged by Gwern Branwen)

https://www.hyperstitionai.com/unslop-results
1•networked•26m ago•0 comments

Magit 4.6 Released

https://emacsair.me/2026/07/01/magit-4.6/
1•signa11•29m ago•0 comments

Varela: Neuromancer-inspired 3D self-mutating coding harness

https://github.com/ajensenwaud/varela/
1•hestefisk•32m ago•1 comments

This is complete software. Can you say that about yours?

https://nonogra.ph/this-is-complete-software-can-you-say-that-about-yours-07-04-2026
5•arkhiver•36m ago•2 comments

Show HN: RightIdea – Validate app ideas with real market data before you build

https://rightidea.app
1•DajiLabs•37m ago•0 comments

A Sort of Buzzing Inside My Head

https://www.nybooks.com/online/2023/06/25/a-sort-of-buzzing-inside-my-head/
1•1vuio0pswjnm7•43m ago•2 comments

AI puts B Corps' values to the test

https://www.fastcompany.com/91568793/ai-puts-b-corps-values-to-the-test
1•1vuio0pswjnm7•47m ago•1 comments

Show HN: High performance command guard and policy enforcement for Agents in Zig

https://github.com/christopherkarani/Orca
2•karc14•49m ago•0 comments

Show HN: Crew – Let Claude Code agents talk to each other

https://github.com/0xmmo/crew
4•mmoustafa•51m ago•2 comments

Linux Looking to Retire a Number of Old ARM Platforms in Early 2027

https://www.phoronix.com/news/Linux-Drop-Old-ARM-2027
2•maxloh•51m ago•0 comments

I am dreading our LLM-written incident report future

https://surfingcomplexity.blog/2026/06/19/i-am-dreading-our-llm-written-incident-report-future/
2•baxtr•52m ago•0 comments

Space startup Katalyst launches orbital rescue for aging NASA observatory

https://www.reuters.com/business/aerospace-defense/space-startup-katalyst-launches-orbital-rescue...
2•JumpCrisscross•59m ago•0 comments

NERM – a tamper-evident audit log that proves itself. Run it yourself

https://github.com/metacentric-tech/nerm-core
1•META-TECH•1h ago•1 comments

What a 1976 Washington Post prediction said about 2026

https://www.washingtonpost.com/history/2026/07/03/what-1976-washington-post-prediction-said-about...
2•reaperducer•1h ago•0 comments

The Age of Decision

https://www.threerulescompany.com/the-age-of-decision
1•dtedesco1•1h ago•0 comments

How Memgraph 3.11 Simplifies Multi-Tenancy for Cross-Database Graph Workloads

https://memgraph.com/blog/memgraph-3-11-multi-tenant-graph-workloads
1•taubek•1h ago•1 comments

Agentic coding notes from Galapagos Island

https://danluu.com/ai-coding/#appendix-agentic-loops-and-writing-this-post
36•gm678•1h ago•13 comments

Redundancy and Bloat Seen in AAA Game Engines

https://zero-irp.github.io/Redundancy-seen-in-AAA-game-engines/
1•davikr•1h ago•0 comments

What the AirCon Debate Says About Britain's Climate Insanity [video]

https://www.youtube.com/watch?v=HwS3l5uP168
1•Bender•1h ago•0 comments