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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/

What podcasts are you listening to?

1•thomk•7s ago•0 comments

CrewForge: A shared terminal room where humans and agents think out loud

1•rexopia•1m ago•0 comments

Show HN: TLA+ Workbench skill for coding agents (compat. with Vercel skills CLI)

https://github.com/younes-io/agent-skills/tree/main/skills/tlaplus-workbench
2•youio•8m ago•1 comments

Amazon Kiro took down AWS for 13 hours. Nine other AI agents did worse

https://blog.barrack.ai/amazon-ai-agents-deleting-production/
1•dhayabaran•8m ago•0 comments

In 92% of DeFi exploits AI security review flags underlying problem

https://www.coindesk.com/business/2026/02/20/specialized-ai-detects-92-of-real-world-defi-exploits
1•GustavHartz•9m ago•0 comments

New York Just Killed Its Robotaxi Plan. The Real Problem Isn't the Technology

https://www.phyware.io/blog/ny-robotaxi-trust-gap
1•chris_money202•10m ago•0 comments

Duration between rewards controls the rate of behavioral, dopaminergic learning

https://www.nature.com/articles/s41593-026-02206-2
1•PaulHoule•13m ago•0 comments

Method and system for determining illumination of models using an ambient cube

https://patents.google.com/patent/US7227548B2/en
1•throwaway2027•16m ago•0 comments

Show HN: Cryphos – no-code crypto signal bot with Telegram alerts

https://cryphos.com
1•duckducker•19m ago•0 comments

Ibex: A Typed DataFrame Language with C++ Code Generation

https://bobjansen.net/ibex-a-typed-dataframe-language-with-c-code-generation/
2•Bootvis•19m ago•0 comments

Show HN: RMirror Cloud – Open-Source OCR and Notion Sync for ReMarkable Tablets

https://rmirror.io
1•gottino•20m ago•0 comments

Crosspassion: The Magical Intersection When Interests Collide

https://micahblachman.beehiiv.com/p/crosspassion
2•subdomain•21m ago•0 comments

Ask HN: How do you track 2026 AI price wars? I built a tool to help

1•TokenCost•24m ago•1 comments

Salvius Joins Moltbook

https://blog.salvius.org/2026/02/salvius-joins-moltbook.html
2•gunthercox•25m ago•0 comments

Velocity Is Dead: AI-Generated Compilers and the Future of Software

https://www.openhands.dev/blog/20260219-velocity-is-dead
1•todsacerdoti•25m ago•0 comments

Local LLM Setup on Windows with Ollama and LM Studio (ThinkPad / RTX A3000 GPU)

https://github.com/gbro3n/local-ai/blob/main/docs/local-llm-setup-windows-ollama-lm-studio.md
1•appsoftware•27m ago•1 comments

Show HN: CanaryAI v0.2.5 – Security monitoring on Claude Code actions

https://github.com/jx887/homebrew-canaryai
1•jx887•28m ago•0 comments

The Risk of GCP Viewer Role: Cross-Project Disk Replication

https://aneviaro.eu/posts/the-hidden-risk-of-gcp-viewer-role-cross-project-disk-replication/
2•xrustalik•30m ago•0 comments

Volatility: The volatile memory forensic extraction framework

https://github.com/volatilityfoundation/volatility3
2•transpute•32m ago•0 comments

Show HN: PaiperSwipe – Crowdsourcing AI summaries for 250M+ research papers

https://paiperswipe.com
3•blakecoffee•33m ago•0 comments

Surreal Number

https://en.wikipedia.org/wiki/Surreal_number
1•the-mitr•34m ago•0 comments

We Built UltrafastSecp256k1 Up to 51% Faster ECC Across x86,ARM64,and RISC-V

1•shrecshrec•34m ago•0 comments

I built a local search CLI for my Claude Code history

https://github.com/madzarm/ccsearch
1•madzarm•34m ago•1 comments

Visualizing one system 11 ways

https://app.ilograph.com/demo.ilograph.Ilograph/__overview
1•billyp-rva•35m ago•0 comments

Alyph – Branch ChatGPT conversations visually

https://alyph.app
1•rrr_oh_man•36m ago•1 comments

Open-Source Bionic Reading Chrome Extension (MIT)

1•sdgnbs•37m ago•0 comments

Make and Ideal Man

https://enombic.com/make-an-ideal-man
1•vxxzy•39m ago•0 comments

Orvia – Spin up a real-time room, share files, leave – everything disappears

1•yc_surajkr•43m ago•1 comments

Four Astronauts, One Orbit – What Will They Find?

https://theguildenet.blogspot.com/2026/02/what-four-astronauts-could-find-as-they.html
1•AriaValrhazar•44m ago•0 comments

Why Moltbook Failed: The Lack of Identity in Autonomous AI Agents

1•benstarslett•44m ago•1 comments