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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Show HN: Claude Chrome Parallel – Ultrafast Parallel Browser MCP for Chrome

https://github.com/shaun0927/claude-chrome-parallel
1•shaun0927•3m ago•0 comments

OpenAI considered alerting Canadian police about school shooting suspect

https://www.theguardian.com/world/2026/feb/21/tumbler-ridge-shooter-chatgpt-openai
1•n1b0m•5m ago•0 comments

Topological Naming Problem

https://wiki.freecad.org/Topological_naming_problem
1•tripdout•10m ago•0 comments

Can we debug a living cell like a running binary?

https://cellhacker.substack.com/p/dna-is-a-self-executing-binary-a
1•efim_bushmanov•18m ago•3 comments

Tiny QR code achieved using electron microscope technology

https://newatlas.com/technology/smallest-qr-code-bacteria-tu-wien/
1•jonbaer•19m ago•0 comments

The Fundamental Limits of LLMs at Scale

https://arxiv.org/abs/2511.12869
2•o4c•20m ago•0 comments

A perceptual-first mobile audio DSP experiment

1•adriel_d•27m ago•0 comments

Saturn's Rings Came from a Two-Moon Collision About 100M Years Ago

https://gizmodo.com/saturns-rings-came-from-a-two-moon-collision-about-100-million-years-ago-stud...
4•mooreds•40m ago•0 comments

A man who triggered the AI explosion(2020) – Alex Krizhevsky [video]

https://www.youtube.com/watch?v=gwzwkv2hO5k
1•o4c•41m ago•0 comments

How to Use Goosetown for Parallel Agentic Engineering

https://block.github.io/goose/blog/2026/02/19/gastown-explained-goosetown/
2•mooreds•41m ago•0 comments

Checkset – a Ruby gem for repeatable verifications using Playwright

https://afomera.dev/posts/2026-02-20-checkset-introduction
1•mooreds•41m ago•0 comments

Understanding LLM from scratch Using middle school math

https://medium.com/data-science/understanding-llms-from-scratch-using-middle-school-math-e602d27e...
2•ilokeshpawar•43m ago•0 comments

Process Isolation on NetBSD with Chroot(2)

https://overeducated-redneck.net/blurgh/netbsd-chroot-isolation.html
1•jaypatelani•44m ago•0 comments

Hardware LLM at 16K Tokens/s

https://taalas.com/products/
1•gcollard-•50m ago•1 comments

With Nvidia's GB10 Superchip, I'm Running Serious AI Models in My Living Room

https://www.pcmag.com/news/nvidia-gb10-superchip-running-ai-models-in-my-living-room
6•the_arun•59m ago•2 comments

Former Debian Project Leader Cautions Against Cover-Up and Censorship in Debian

https://techrights.org/n/2026/02/20/Former_Debian_Project_Leader_Branden_Robinson_Cautions_Agains...
1•amcclure•1h ago•0 comments

TabType – Universal text expansion for macOS for your context

https://tabtype.app
1•enixam•1h ago•1 comments

Show HN: Git uncommit – reset unpushed, committed changes

https://github.com/below43/git-uncommit
1•below43•1h ago•3 comments

The New Digg.com Is Slop

https://techrights.org/n/2026/01/24/Digg_com_Digg_is_a_Censorship_Platform_Just_Another_Social_Co...
5•amcclure•1h ago•1 comments

Show HN: JVBar CIS Benchmark scanner and remediation script generator

https://www.jvbar.com
1•sandadze•1h ago•0 comments

Designing a Document Management System from Scraps

https://www.theolouvel.com/fieldnotes/Small+Stabs/2026-02-20+-+Designing+a+Document+Management+Sy...
1•theolouvel•1h ago•0 comments

OpenAI Employees Raised Alarms About Canada Shooting Suspect Months Ago

https://www.wsj.com/us-news/law/openai-employees-raised-alarms-about-canada-shooting-suspect-mont...
7•caminante•1h ago•1 comments

Show HN: Polya's urn – essays on complexity and emergence

https://www.polyasurn.com/
1•pcarolan•1h ago•0 comments

Open Letter to Tech Companies: Protect Your Users from Lawless DHS Subpoenas

https://www.techdirt.com/2026/02/20/open-letter-to-tech-companies-protect-your-users-from-lawless...
2•cdrnsf•1h ago•0 comments

MCP Servers Reaches 79K GitHub Stars

https://theagenttimes.com/articles/mcp-servers-79017-stars
2•Ross00781•1h ago•1 comments

I made a local AI creature that runs on integers

https://double-star-games.itch.io/feryl/devlog/1393626/introducing-feryl-a-local-desktop-ai-creature
1•pmeade-ds•1h ago•1 comments

Phil Spencer Retires from Microsoft and Xbox

https://twitter.com/i/status/2024951211129254314
2•stevefan1999•1h ago•0 comments

Show HN: Assay – Found 250 bugs in LiteLLM, LobeChat via AI code verification

https://github.com/gtsbahamas/hallucination-reversing-system
2•tywellshn•1h ago•1 comments

Chris Lattner evaluates the Claude C Compiler

https://www.modular.com/blog/the-claude-c-compiler-what-it-reveals-about-the-future-of-software
5•adas0693•1h ago•2 comments

FB – Clean My Feeds

https://greasyfork.org/en/scripts/431970-fb-clean-my-feeds-5-02
1•gslin•1h ago•0 comments