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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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: I made an IPv6 proxy for GitHub

https://githubv6.com/
1•immibis2•3m ago•0 comments

Cherry Kearton – groundbreaking 19th-century nature photographer

https://www.bbc.com/future/article/20260507-cherry-kearton-the-eccentric-influence-on-a-young-sir...
1•jeffwass•6m ago•1 comments

I Will Never Use AI to Code

https://antman-does-software.com/i-will-never-use-ai-to-code-or-write
2•ishanz•8m ago•0 comments

Poka-Yoke

https://en.wikipedia.org/wiki/Poka-yoke
2•the-mitr•8m ago•0 comments

Anthropic weighs fundraising for near $1T valuation, FT reports

https://www.reuters.com/technology/anthropic-weighs-fundraising-near-1-trillion-valuation-ft-repo...
1•giuliomagnifico•10m ago•0 comments

Young people explicitly banned from openSUSE – urgent call for reversal

https://lists.opensuse.org/archives/list/project@lists.opensuse.org/message/6PU6JU2IGKDANYNN3KIXD...
2•robin_reala•12m ago•0 comments

The Birthplace of AI

https://www.cantorsparadise.com/the-birthplace-of-ai-9ab7d4e5fb00
1•tzury•15m ago•0 comments

Show HN: Know Any Good Jokes?

https://6jokes.com
1•dobodob•20m ago•0 comments

Stable Release of OpenClaw

https://agentwatch.aicompass.dev
1•davideuler•21m ago•1 comments

Code with Claude 2026 – San Francisco (playlist) [video]

https://www.youtube.com/watch?v=GMIWm5y90xA&list=PLmWCw1CzcFim2obQ-w3ohbULOfwp5lApR
1•pramodbiligiri•28m ago•0 comments

EU calls VPNs "a loophole that needs closing" in age verification push

https://cyberinsider.com/eu-calls-vpns-a-loophole-that-needs-closing-in-age-verification-push/
11•muse900•30m ago•1 comments

Building an AI-Powered IDE Companion App

https://mesmacosta.medium.com/google-cloud/from-idea-to-execution-building-an-ai-powered-ide-comp...
1•graup•30m ago•2 comments

How empty are the depths of space?

https://bigthink.com/starts-with-a-bang/how-empty-depths-space/
1•Kaibeezy•31m ago•0 comments

Color space conversion that transforms RGB/RYB colors in code/learn mode

https://rybitten.space/
1•jamiecurle•37m ago•0 comments

Perplexity Drops the Academic Integrity Mask

https://www.plagiarismtoday.com/2025/10/27/perplexity-drops-the-academic-integrity-mask/
2•jruohonen•39m ago•0 comments

Show HN: Hacker News Dark Mode Bookmarklet

https://github.com/gorgonian/hn-dark-bookmarklet
1•gorgonian•41m ago•0 comments

What Beijing learned about the U.S. from the Iran war

https://www.politico.com/news/2026/05/08/china-lessons-iran-trump-xi-00912539
2•KnuthIsGod•46m ago•0 comments

Data Visualisation Guide

https://data.europa.eu/apps/data-visualisation-guide/graphic-design-introduction
2•tosh•49m ago•0 comments

How Timeplus AgentGuard dectect realtime threats from Agent

https://timeplus-io.github.io/Presentation---AgentGuard-Introduction/
1•gangtao•50m ago•0 comments

How Axavive Supports Better Wellness Naturally?

1•JackSage•56m ago•0 comments

Whistling-only WhatsApp groups are taking off in Brazil

https://www.theguardian.com/world/2026/may/05/brazil-craze-whistling-only-whatsapp-groups
2•sahar_builds•58m ago•0 comments

Porting Starlark to Pure Python with Claude Code

https://dbohdan.com/starlark-python
1•networked•59m ago•0 comments

[Odds of hitting] a home run off the top of the foul pole

https://www.nytimes.com/athletic/7261633/2026/05/08/oneil-cruz-home-run-foul-pole-pirates/
1•Kaibeezy•1h ago•1 comments

A Technical Dive into Formalization of Chess Tactics

https://lichess.org/@/heroku/blog/gofchess--a-technical-dive-into-formalization-of-chess-tactics/...
2•heroku•1h ago•0 comments

Show HN: My New Projects Website

https://apps.weichart.de
1•surrTurr•1h ago•0 comments

The Making of Steven Spielberg's Jurassic Park (2012)

https://www.blu-ray.com/news/?id=8186
2•susam•1h ago•0 comments

Deepsec: The security harness for finding vulnerabilities

https://vercel.com/blog/introducing-deepsec-find-and-fix-vulnerabilities-in-your-code-base
1•gmays•1h ago•0 comments

Watts Wasting Texas Water [pdf]

https://www.sierraclub.org/sites/default/files/2026-05/texaswaterreport_final.pdf
2•littlexsparkee•1h ago•0 comments

Aurora: A Leverage-Aware Optimizer for Rectangular Matrices

https://blog.tilderesearch.com/blog/aurora
1•sanxiyn•1h ago•0 comments

Snapseed 4.0 – Note from the Team

https://old.reddit.com/r/snapseed/comments/1t7j7yt/snapseed_40_a_note_from_the_snapseed_team/
1•satvikpendem•1h ago•0 comments