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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: OneCamp – Self-Hosted Slack/Asana/Zoom/Notion Alternative

1•akashc777•14s ago•0 comments

Biggest day of Claude app downloads in history, by far

https://xcancel.com/SashaKaletsky/status/2027987508500316571
1•doener•1m ago•0 comments

Show HN: Free tool to see what keywords any website ranks for

https://champsignal.com/tools/competitor-keyword-finder
1•maximedupre•2m ago•1 comments

PHP on the Desktop: BosonPHP for Ultra-High Performance Native Applications

https://lionel-peramo.com/posts/php-desktop-native-applications-bosonphp/
1•ulrischa•4m ago•0 comments

OpenAI details layered protections in US defense department pact

https://www.reuters.com/business/media-telecom/openai-details-layered-protections-us-defense-depa...
1•giuliomagnifico•4m ago•0 comments

Welcoming Elizabeth Barron as the New Executive Director of the PHP Foundation

https://thephp.foundation/blog/2026/02/27/welcoming-elizabeth-barron-new-executive-director/
1•ulrischa•4m ago•0 comments

Who Owns Your ATProto Identity? Hint: It's Probably Not You

https://kevinak.se/blog/who-actually-owns-your-atproto-identity-hint-its-probably-not-you
1•kevinak•5m ago•0 comments

Why does C have the best file API?

https://maurycyz.com/misc/c_files/
1•ulrischa•5m ago•0 comments

Making Claude Beep: A Dive into Hooks with Claude Code

https://www.drewhyde.io/blog/claude-code-beep-hooks
1•Andrewryanhyde•9m ago•0 comments

The Cathode Ray Tube site

https://www.crtsite.com/didactic-crt.html
1•joebig•9m ago•0 comments

Giving Claude a Parent: Multi-Model Code Review via MCP

https://www.drewhyde.io/blog/codex-mcp-claude-code
1•Andrewryanhyde•9m ago•0 comments

Show HN: ParseHive – AI-powered invoice data extraction for Windows and Mac

https://parsehive.app
1•misha_dev•10m ago•0 comments

Show HN: RAG-Enterprise – 100% local RAG system for enterprise documents

https://github.com/I3K-IT/RAG-Enterprise
1•primoco•11m ago•1 comments

Wordles new number game rival

https://the67numbergame.github.io/
1•_snory•16m ago•1 comments

ChatGPT Recommends Claude

https://xcancel.com/deedydas/status/2028030521973125617?s=20
1•doener•18m ago•0 comments

Emacs is shell root but no schwag?

https://shop.fsf.org/
1•krry•18m ago•1 comments

Google Killed the Rent-a-Domain Era

https://growtika.com/blog/publisher-affiliate-collapse
1•Growtika•19m ago•1 comments

Show HN: Nummi – AI companion with memory and daily guidance

https://www.nummi.ai/download
1•ab-abg•23m ago•1 comments

Show HN: Practicing Interview with AI

https://sungatae.com/posts/interviewshark/
1•visujosh•23m ago•0 comments

Give AI agents a real browser, watch them live via WebRTC

https://github.com/lowjax-com/vscreen
1•lowjax•23m ago•1 comments

Brain's "RAM" and "Hard Drive"

1•0ut0flin3•24m ago•1 comments

Show HN: Aide – Opinionated, deterministic code editing for AI agents

https://github.com/avataristvan/a-i-d-e
1•avataristvan•25m ago•0 comments

4,500 Physicians Agree (About Bacon)

https://machielreyneke.com/blog/persuasion/
1•machielrey•27m ago•0 comments

Antarctica just saw the fastest glacier collapse ever recorded

https://www.sciencedaily.com/releases/2026/02/260226042454.htm
2•yusufaytas•31m ago•0 comments

Ws – Keep Claude Code's context visible in your terminal

https://github.com/n-filatov/ws
1•notwhalee•32m ago•1 comments

Show HN: ZcoreAI – Z-score regression channel screener

https://www.zcoreai.com/
1•tchantchov•33m ago•0 comments

Configure MCP servers once. Sync them everywhere

https://conductor-mcp.vercel.app
1•aryaabyte•34m ago•1 comments

Measuring signals buried in noise with an Oscilloscope [video]

https://www.youtube.com/watch?v=vv-xkNa1Z9s
1•joebig•35m ago•0 comments

Show HN: Cloudflared-DNS-controller: Auto-sync DNS from cloudflared ConfigMap

https://github.com/seipan/cloudflared-dns-controller
1•Seipann11•39m ago•0 comments

E2EE Back end part 3: Passkeys with the PRF Extension

https://peterspath.net/blog/dev-e2ee-backend-part-3-passkeys-with-the-prf-extension/
2•peterspath•40m ago•0 comments