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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/

What is the PMAD SIM and why is everyone talking about it?

https://pmad-sim.org/
1•luggermcugger•14s ago•0 comments

Nicolas Cage Says the MCU 'Is Becoming a Well-Funded and Glorified WWE'

https://variety.com/2026/film/news/nicolas-cage-marvel-cinematic-universe-wwe-1236893541/
2•Michelangelo11•2m ago•0 comments

Context Language Models

https://arxiv.org/abs/2609.37725
1•emersonmacro•3m ago•0 comments

Show HN: Rename screenshots into searchable filenames with AI

https://www.nevorago.com
1•glcyming•4m ago•0 comments

Pete Hegseth appoints Elon Musk to US taskforce on future of warfare

https://www.theguardian.com/technology/2026/sep/30/pete-hegseth-elon-musk-taskforce-warfare
3•downbad_•5m ago•1 comments

No more surprise bills from AWS in the new signup experience

https://builder.aws.com/content/3K40wU1kLaw4K1mIPkvVxKkx7mV/learn-aws-without-a-surprise-bill-sta...
1•robdahaldev•5m ago•1 comments

Show HN: Sharedclipboard.com – Peer-to-peer encrypted clipboard in the browser

https://sharedclipboard.com/
1•oleksii88•5m ago•0 comments

Show HN: Textsnap – CPU OCR in <1 seconds/page

https://github.com/kouhxp/textsnap
1•mrkn1•8m ago•0 comments

Esp-Vim: Real Vim 9.2 running directly on the ESP32-P4 and ESP32-S3

https://github.com/omwah/esp-vim
1•zdw•9m ago•0 comments

Show HN: Chess in SQL

https://swingbit.github.io/quack-mate/
1•swingbit•9m ago•0 comments

Agent Development Environment (ADE)and orchestrator shipping with coding agents

https://cezar.run/
3•pkarwatka•9m ago•0 comments

Website Sucker – download a whole site as an offline ZIP, resumable

https://websitesucker.com/
1•carloslerma•12m ago•0 comments

John Carmack on Aliasing (2016)

https://www.facebook.com/100006735798590/posts/in-almost-all-of-the-public-vr-critiques-i-have-ma...
1•tosh•12m ago•0 comments

Claude for Government is now generally available

https://claude.com/blog/claude-for-government-is-now-generally-available
1•gmays•12m ago•0 comments

Show HN: An 8k-word essay whose word lengths draw a famous face

https://words2pixel.topmate.io
1•kool_dinesh•12m ago•0 comments

Cops Can Bypass iPhone's Automatic Reboot to Get into Locked Phones

https://www.404media.co/cops-can-bypass-iphone-automatic-inactivity-reboot-graykey/
3•speckx•16m ago•0 comments

Devrim GÜNDÜZ: Rust extensions started landing PostgreSQL RPM repository

https://people.planetpostgresql.org/devrim/
1•hnp9j9qtda•17m ago•0 comments

A Hacking Competition Shows the Power of China's 'Open Weight' A.I

https://www.nytimes.com/2026/10/01/science/hackerone-tenzai-china-open-weights.html
3•0in•19m ago•0 comments

Free list of 180K+ disposable email domains, growing daily

https://github.com/las-nish/disposable-emails
2•lasgawe•19m ago•2 comments

Two Kinds of SQL Query Builders

https://mechanicalrabbit.github.io/FunSQL.jl/stable/two-kinds-of-sql-query-builders/#Two-Kinds-of...
1•birdculture•19m ago•0 comments

Ask HN: Which "AI" provider would you choose?

1•EbNar•20m ago•0 comments

What Does the Fourth Dimension Look Like?

https://www.quantamagazine.org/what-does-the-fourth-dimension-actually-look-like-20261001/
1•ibobev•20m ago•0 comments

Rust in the kernel? What about Rust without the kernel

https://kerkour.com/rust-kernel
2•uncommon8609•20m ago•0 comments

The Second Golden Spike: Memory Safety Across the Valen/Rust Boundary

https://verdagon.dev/blog/boundary-memory-safety
1•ibobev•20m ago•0 comments

What If We Just Stopped?

https://dansinker.com/posts/2026-09-23-stopped/
1•speckx•20m ago•0 comments

Advanced Shader Delivery Available for Gears of War

https://devblogs.microsoft.com/directx/advanced-shader-delivery-available-for-gears-of-war-e-day-...
1•ibobev•20m ago•0 comments

How to set up SPF, DKIM, and DMARC for your sending domain

https://mailfully.com/blog/spf-dkim-dmarc-setup
1•spy888•21m ago•0 comments

Who Keeps Your Industrial AI Plugged In?

https://deploy95.substack.com/p/uptime-follows-the-maintainer-not
1•dddddaviddddd•22m ago•0 comments

HoneyBench – A general benchmark for reward hacking in frontier models

https://goodhartlabs.com/blog/releasing-honeybench
1•dnfv•22m ago•0 comments

Codex Cloud, and a Week of Work Before Getting Out of Bed

https://felipe.ai/notes/codex-cloud-a-week-of-work-before-getting-out-of-bed
1•63labs•23m ago•0 comments