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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

The risks of OpenAI's Whisper audio transcription model

https://www.baldurbjarnason.com/2024/openai-whisper-risks/
1•latexr•1m ago•0 comments

Kernel-Level Stealthy Observation of TTY Streams

https://blog.cybervelia.com/p/kernel-level-stealthy-observation-of-tty-streams
1•fandomas•4m ago•0 comments

Thrum – Persistent messaging for AI agents

https://github.com/leonletto/thrum
1•leonletto•5m ago•1 comments

My week of only using cash: could a return to notes and coins change my life?

https://www.theguardian.com/lifeandstyle/2026/feb/10/my-week-of-only-using-cash-could-a-return-to...
2•mindracer•5m ago•0 comments

From baseload to flexibility: How coal's role in China is changing

https://ember-energy.org/latest-insights/from-baseload-to-flexibility-how-coals-role-in-china-is-...
1•hunglee2•6m ago•0 comments

Mrinank on X: "Today is my last day at Anthropic. I resigned."

https://twitter.com/MrinankSharma/status/2020881722003583421
1•T-A•10m ago•1 comments

Show HN: I Built an Customized LLM for Singapore

https://github.com/adityaprasad-sudo/Explore-Singapore
1•Egabybaldman•10m ago•0 comments

PicoRuby is the smallest Ruby implementation for one-chip microcontrollers

https://picoruby.org
1•fork-bomber•12m ago•0 comments

Moltbook: Fast Response or Silence?

https://arxiv.org/abs/2602.07667
1•EagleEdge•14m ago•0 comments

Amiga GadTools Library

https://wiki.amigaos.net/wiki/GadTools_Library
1•doener•15m ago•0 comments

Show HN: Minibrew – Run Homebrew packages without Homebrew

https://dryark.com/minibrew-python/
1•dryark•16m ago•0 comments

Skia Graphite: Chrome's rasterization back end for the future

https://blog.chromium.org/2025/07/introducing-skia-graphite-chromes.html
1•maxloh•18m ago•0 comments

Show HN: Moltinder – A dating platform for AI agents with genetic reproduction

1•moltinder•18m ago•0 comments

From the stupid DNS tricks department: ipasn.net

https://blog.apnic.net/2026/02/09/from-the-stupid-dns-tricks-department-ipasn-net/
1•speckx•19m ago•0 comments

We bootstrapped to 450 stars by giving away risk free arbitrage opportunities

1•SamTinnerholm•19m ago•0 comments

Show HN: DACP – governance gateway for AI coding agents

https://github.com/elliot35/deterministic-agent-control-protocol
1•elliot35•20m ago•0 comments

The Hacker's Choice Favourite Tips, Tricks and Hacks (Cheat Sheet)

https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet
1•shaunpud•23m ago•0 comments

The Road Ahead for LocalStack

https://blog.localstack.cloud/the-road-ahead-for-localstack/
2•shscs911•26m ago•0 comments

Show HN: Clawl – a search engine for autonomous AI agents

https://clawl.co.uk
1•pensaer•27m ago•1 comments

2 To 3 Cups of Coffee a Day May Reduce Dementia Risk. But Not If It's Decaf

https://www.nytimes.com/2026/02/09/health/coffee-tea-dementia-risk.html
3•doener•28m ago•0 comments

Show HN: I built a library of Claude skills for growth marketers

https://github.com/ognjengt/founder-skills
1•ognjengt•28m ago•0 comments

Right-to-Compute Laws Spread Across the US, as Electricity Bills Skyrocket

https://gizmodo.com/right-to-compute-laws-are-spreading-across-the-us-as-electricity-bills-skyroc...
2•campuscodi•29m ago•0 comments

Euronews: How Europe's broadcaster became an influence network

https://www.euractiv.com/news/inside-euronews-how-europes-broadcaster-became-an-influence-network/
4•Vinnl•29m ago•0 comments

The Anthropic Hive Mind

https://steve-yegge.medium.com/the-anthropic-hive-mind-d01f768f3d7b
1•tosh•29m ago•0 comments

Have I hardened against LLMs?

https://www.baldurbjarnason.com/2026/have-i-hardened-against-ai/
2•latexr•30m ago•0 comments

CIA Launches New Acquisition Framework to Turbocharge Work with Private Sector

https://www.cia.gov/stories/story/cia-launches-new-acquisition-framework-to-turbocharge-collabora...
1•keepamovin•34m ago•0 comments

Tell HN: GitHub Had 40 Service Incidents This Year (Jan 1 – Feb 10)

https://www.githubstatus.com/history
2•vintagedave•35m ago•0 comments

How Many Years of Pizza Do You Have?

https://parkscomputing.com/page/how-many-years-of-pizza
1•paulmooreparks•36m ago•0 comments

Please Don't Feed the Scattered Lapsus ShinyHunters

https://krebsonsecurity.com/2026/02/please-dont-feed-the-scattered-lapsus-shiny-hunters/
1•tatersolid•36m ago•0 comments

The Car Industry Is Racing to Replace Chinese Code

https://www.wsj.com/business/autos/the-car-industry-is-racing-to-replace-chinese-code-6b939e1f
1•JeanKage•37m ago•0 comments