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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/

Can we have the day off?

https://mlsu.io/posts/day-off/
1•mlsu•2m ago•0 comments

Xerolith

https://xerolith.com/
1•XerolithAI•6m ago•0 comments

The Pioneer Anomaly

https://en.wikipedia.org/wiki/Pioneer_anomaly
1•Jimmc414•7m ago•0 comments

Woman without right hand charged for holding phone in right hand while driving

https://cbs12.com/news/local/florida-news-viral-tiktok-charges-dismissed-for-woman-without-right-...
2•hn_acker•9m ago•2 comments

Show HN: An update to our long-turn FreeCiv experience

https://freeciv.andrewmcgrath.info/
2•verelo•18m ago•0 comments

StumbleTV: Chat Roulette but for Exposed Webcams

https://stumbletv.alectrocute.workers.dev/c/2e6ff336f1235cc1
2•arm32•20m ago•0 comments

The millionaires tax was pitched as a $2B revenue source. It's blown past that

https://www.bostonglobe.com/2026/05/25/metro/millionaires-tax-massachusetts/
2•ceejayoz•23m ago•0 comments

Delaware court upholds voting by companies in small town's election

https://www.reuters.com/legal/government/delaware-court-upholds-voting-by-companies-small-towns-e...
3•anigbrowl•23m ago•0 comments

Poll: Would you allow a first generation plumber robot in your home?

2•Bender•31m ago•1 comments

Amazon Strikes $6B Deal with Snowflake for Agentic Computing Chips

https://www.wsj.com/tech/amazon-strikes-6-billion-deal-with-snowflake-for-its-agentic-computing-c...
3•jpau•32m ago•0 comments

Breaking Rust

https://en.wikipedia.org/wiki/Breaking_Rust
2•petethomas•34m ago•0 comments

Agents can sign up for Composio

https://composio.dev/blog/your-agents-can-signup-for-composio
2•mooreds•35m ago•0 comments

Xania Monet

https://en.wikipedia.org/wiki/Xania_Monet
2•petethomas•36m ago•0 comments

Agent Security Is a Systems Problem

https://arxiv.org/abs/2605.18991
2•yakkomajuri•39m ago•0 comments

Attrition: The Chinese Family Collapse

https://www.strategypage.com/htmw/htatrit/articles/2026052754034.aspx
3•skmurphy•40m ago•1 comments

The Authorization Paradox: Who Has the Keys to Your AI? [video]

https://www.youtube.com/watch?v=5UUpxgcGKXk
2•mooreds•41m ago•0 comments

GitMo – Auto sync your local project files to GitHub while you work.

https://github.com/KyleBenzle/GitMo/tree/main
2•WWIII_Historian•45m ago•0 comments

Ansel: Complete Pipeline Overhaul

https://ansel.photos/en/news/complete-pipeline-overhaul/
2•neucoas•49m ago•0 comments

Dutch block US takeover of Solvinity as against public interest

https://www.reuters.com/technology/dutch-government-block-takeover-cloud-services-company-solvini...
4•rectang•55m ago•1 comments

Show HN: Liiists, a Markdown-first, iOS and CLI list app

https://github.com/djt53/liiists
2•dtingle•56m ago•0 comments

What Will Happen When the AI Barons Give Back?

https://www.nytimes.com/2026/05/27/opinion/ai-philanthropy-charity.html
2•berkeleyjunk•58m ago•0 comments

You Should Not Update Your Dependencies

https://www.mendral.com/blog/you-should-not-update
16•OlivierCG•59m ago•2 comments

Atom Exhaustion Is Not a Footgun. It's One Third of Our CVEs

https://www.erlef.org/blog/eef/atom-exhaustion
2•croottree•1h ago•0 comments

A non-coding coding agent

https://zserge.com/posts/socreates/
2•croottree•1h ago•0 comments

OpenDisplay – open standard for e-paper screens

https://opendisplay.org/
3•balloob•1h ago•0 comments

Building the Future of Accessible Tech: Inside Uvilox AI

https://uvilox-aiwebsite.pages.dev/
2•Pallav123•1h ago•0 comments

Monome at Twenty

https://monome.org/twenty
3•robenkleene•1h ago•0 comments

Monome at 20: memories of the grid, in pictures

https://cdm.link/monome-at-20-memories-of-the-grid-in-pictures/
2•robenkleene•1h ago•0 comments

Did Newton know that force is mass times acceleration?

https://hsm.stackexchange.com/questions/19441/did-newton-know-that-force-is-mass-times-acceleration
3•kristianp•1h ago•0 comments

Am I a Bad Friend?

https://drobinin.com/posts/am-i-a-bad-friend/
3•valzevul•1h ago•0 comments