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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/

I Built a 6 BIPS JIT in Five Months

https://unlikelyemphasis.substack.com/p/i-built-a-6-bips-jit-in-five-months
1•brazilofmux•3m ago•0 comments

Pandoc for the people: Convert documents without leaving the browser

https://pandoc.org/app/
1•romes•6m ago•0 comments

Type Variance

https://en.wikipedia.org/wiki/Type_variance
1•tosh•7m ago•0 comments

A 2.5x faster Postgres parser with Claude Code

https://multigres.com/blog/ai-parser-engineering
2•kiwicopple•13m ago•0 comments

The age of a treacherous, falling dollar

https://www.economist.com/leaders/2026/02/05/the-age-of-a-treacherous-falling-dollar
2•petethomas•13m ago•0 comments

The End of Human Relationships

https://www.hackyexperiments.com/blog/the-end-of-human-relationships
3•bilater•13m ago•0 comments

I built a digital safe with multiple keys after a few too many bike concussions

https://eljojo.github.io/rememory/
3•eljojo•13m ago•1 comments

The Assault on Ukraine's Power Grid

https://www.newyorker.com/news/the-lede/the-assault-on-ukraines-power-grid
2•petethomas•14m ago•0 comments

Where Drupal Still Wins in 2026?

https://kokocinski.me/blog/where-drupal-still-wins-2026
2•firflant•15m ago•0 comments

Tesla likely can't escape 'Blade Runner 2049' lawsuit

https://www.reuters.com/legal/litigation/tesla-musk-likely-cant-escape-blade-runner-2049-lawsuit-...
3•jmkd•16m ago•1 comments

A tale of three kings (Python, Elixir, Go) (2017)

https://medium.com/@marcelo_lebre/a-tale-of-three-kings-e0be17a16e2b
2•tosh•17m ago•0 comments

Don't Look Behind the Curtains

https://rodyne.com/?p=3574
1•boznz•21m ago•0 comments

Show HN: Ironpad – Local-first project management with Git versioning

https://github.com/OlaProeis/ironPad
1•OlaProis•22m ago•0 comments

Irony alert: Anthropic helps UK.gov to build chatbot for job seekers

https://www.theregister.com/2026/01/29/irony_alert_anthropic_helps_ukgov/
2•myk-e•23m ago•0 comments

Consider F# (2024)

https://www.asfaload.com/blog/consider-fsharp/
1•tosh•29m ago•0 comments

The times Yann LeCun has been wrong about LLMs

https://old.reddit.com/r/LovingAI/comments/1qvgc98/yann_lecun_says_basing_agentic_systems_on_the/...
3•aurareturn•30m ago•1 comments

Crazy shit linkers do: Common Data (COMDAT) sections

https://fzakaria.com/2026/02/03/crazy-shit-linkers-do-common-data-comdat-sections
1•ingve•33m ago•0 comments

Ask HN: Resources on how and why these LLM's work

1•jaapz•35m ago•0 comments

Competence as Tragedy

https://crowprose.com/blog/competence-as-tragedy/
1•ahamez•36m ago•0 comments

Unleash endless fun with Baent Games

https://t5.baent.top/
1•LinkLens•38m ago•1 comments

HarfBuzz at 20

https://docs.google.com/presentation/d/1o9Exz1c-Lr-dJjA8dcBn_Vl_Y37cupmFzmclMjBE_Bc/view
1•behdad•38m ago•1 comments

Find the lowest prices on prescription drugs

https://trumprx.gov/
1•alexanderklein•43m ago•1 comments

New in /experimental mode in Copilot CLI: "Fleets"

https://twitter.com/_Evan_Boyle/status/2019497961777172488
1•mparramon•44m ago•0 comments

System Initiative Shutting Down

https://www.systeminit.com/
2•mikidi•44m ago•0 comments

Elon's tech tree is converging

https://www.youtube.com/watch?v=BYXbuik3dgA
1•MrBuddyCasino•46m ago•0 comments

From Roots to Reach: Network Resilience in Natural Disasters

https://blog.apnic.net/2026/02/06/from-roots-to-reach-network-resilience-in-natural-disasters/
1•jruohonen•47m ago•0 comments

Gokin: Go-Native CLI for AI-Assisted Coding with Gemini, DeepSeek, GLM, Ollama

https://github.com/ginkida/gokin
1•ginkida•47m ago•1 comments

Macau's Grand Emperor hotel rips up lobby floor to sell off gold bricks

https://www.theguardian.com/world/2026/feb/06/macau-grand-emperor-hotel-lobby-gold-bricks
1•c420•48m ago•0 comments

I used Gemini to build an all-in-one Chrome extension, and uninstalled 10 others

https://chromewebstore.google.com/detail/fireai-all-in-one-ai-assi/jgpmkbgjngmhibgebdbekognpdoagoag
1•icefunc•49m ago•0 comments

Is C-rating marketing, or does it still matter for LiPo packs?

1•nicole_chen•49m ago•1 comments