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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/

A Polish architect rotated his house to hide it in the hill

https://www.yankodesign.com/2026/07/30/a-polish-architect-rotated-his-house-to-hide-it-in-the-hill/
1•andrewstetsenko•28s ago•0 comments

Hank Green found the AI problem that YouTube labels can't catch

https://arstechnica.com/ai/2026/08/hank-green-found-the-ai-problem-that-youtube-labels-cant-catch/
1•CharlesW•1m ago•0 comments

Fragplay – Download and play music easily

https://codeberg.org/micro4scopic/fragplay
1•holeinwall•2m ago•1 comments

Pam Bondi Implicated in as Much as $5.5M in Insider Trading

https://cmarmitage.substack.com/p/pam-bondi-implicated-in-as-much-as
2•JumpCrisscross•4m ago•0 comments

Muse Spark 1.2 (Xhigh) Intelligence, Performance and Price Analysis

https://artificialanalysis.ai/models/muse-spark-1-2
1•theanonymousone•5m ago•0 comments

Animals that self-medicate (2014)

https://www.pnas.org/doi/10.1073/pnas.1419966111
1•EndXA•7m ago•0 comments

Call for Ideas: Autonomous Software Experiments on Hera

https://ideas.esa.int/core/servlet/hype/IMT?documentTableId=8527279057944083272&userAction=Browse...
1•Carbonhell•8m ago•0 comments

Mexico's top univ orders 58k students to retake entrance exam:suspected cheating

https://www.theguardian.com/world/2026/aug/05/mexico-top-university-unam-resit-entrance-exam-chea...
1•bookofjoe•9m ago•0 comments

Reddit signals ominous upcoming "changes" for old.reddit.com

https://arstechnica.com/gadgets/2026/08/reddit-signals-ominous-upcoming-changes-for-old-reddit-com/
2•CharlesW•10m ago•1 comments

Show HN: Bifrost: Enterprise MCP Gateway with Built-In Security: OAuth 2.0, RBAC

https://github.com/maximhq/bifrost
1•aanthonymax•11m ago•0 comments

Prime Agent

https://twitter.com/PrimeIntellect/status/2085086999267144083
1•tosh•12m ago•0 comments

OpenStamp – A watermarking method for open-weight LLMs

https://github.com/mb-14/openstamp/
1•mb14•12m ago•0 comments

AgentGuard – fail-closed approval gateway for AI agent tool calls

https://github.com/moon2022alakhali-commits/agentguard
1•yhouseff_dev•13m ago•0 comments

Tl;Dv (Too Lazy; Didn't Validate): 181,874 Meetings Left Wide Open

https://bobdahacker.com/blog/tldv-hack
1•yoelcabo•14m ago•0 comments

The Lyon Amendment to the Lancaster Consensus: Perl's Toolchain Version Support

https://github.com/Perl-Toolchain-Gang/toolchain-site/blob/master/lyon-amendment.md
1•fanf2•14m ago•0 comments

Double trouble for Microsoft as pre-owned software license claims converge

https://www.theregister.com/saas/2026/08/05/double-trouble-for-microsoft-as-pre-owned-software-li...
1•Bender•14m ago•0 comments

AI-Focused Altimeter Sinks 11%, Joins Funds Hit by Brutal July

https://www.bloomberg.com/news/articles/2026-08-05/balyasny-verition-join-hedge-funds-losing-mone...
1•mapping365•14m ago•0 comments

China is building a blue granary

https://www.palladiummag.com/2026/08/04/china-is-building-a-blue-granary/
2•hunglee2•15m ago•0 comments

Creator of Lua: What People Get Wrong About Scripting Languages [video]

https://www.youtube.com/watch?v=jCZnFKk6M9A
1•skibz•17m ago•0 comments

The Bitter Lesson (2019)

http://www.incompleteideas.net/IncIdeas/BitterLesson.html
1•zbentley•19m ago•0 comments

Show HN: Command Code GOAT, $10/month for $70 of credits across 30 models

https://twitter.com/CommandCodeAI/status/2085039006203711649
5•ahmadawais•20m ago•2 comments

Conductance levels in memristors integrated on CMOS – Nature

https://www.nature.com/articles/s41586-023-05759-5
2•bilsbie•21m ago•0 comments

The Lisp Machine: Your Next Step in Computing

https://www.symbolics.biz
1•yacin•23m ago•0 comments

Apple Vision Pro Speeds Up Endoscopic Surgery by Almost 20%

https://www.macrumors.com/2026/08/05/apple-vision-pro-speeds-up-surgery/
3•MBCook•23m ago•1 comments

OpenMouse: Open-source, browser-based app for managing computer mice

https://openmouse.app/
1•morjom•23m ago•1 comments

Tcrf.net served Claude a payload telling it to wipe the working directory

https://github.com/bashalarmistalt/tcrf-ai-agent-payload-report
1•BashAlarmist•25m ago•1 comments

OpenAI agents rebuilt a secret message board after the company shut it down

https://runtimewire.com/article/exclusive-openai-agents-rebuilt-a-secret-message-board-after-the-...
2•ryanmerket•25m ago•0 comments

Visual Prompt Engineering for Video Models

https://visual-prompt-engineering.github.io/
1•gmays•25m ago•0 comments

Cross-Compilation with Wails

https://chriswheeler.dev/posts/cross-compilation-with-wails/
1•auraham•26m ago•0 comments

Cle Elum passed a data center ban. One might be built there anyway

https://www.seattletimes.com/seattle-news/climate-lab/cle-elum-passed-a-data-center-ban-one-might...
1•petethomas•31m ago•0 comments