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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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: Powerful Org-Mode at Home on iOS

https://apps.apple.com/us/app/orger/id6775281796
1•surfcao•1m ago•0 comments

Show HN: Sanemark – Markdown LSP for notes readable in plain text

https://github.com/nkitsaini/sanemark
1•nkit•2m ago•0 comments

Serve DiffusionGemma-Jev (Djev) on a TypeSafe AI Compatible API

https://github.com/taeold/djev-run
1•_js•3m ago•0 comments

Bernie Sanders wants to ban 'superintelligence' and put violators in prison

https://www.theverge.com/ai-artificial-intelligence/999443/bernie-sanders-ai-superintelligence-ba...
2•droidjj•6m ago•0 comments

Rat Stack: reference for building an app and its cloud as one typed program

https://ratstack.sh/
1•handfuloflight•8m ago•0 comments

The Social Reckoning

https://thesocialreckoning.com.au/home/
1•andrewstuart•8m ago•0 comments

The web being slow is a choice (and it's a stupid choice)

https://albanbrooke.com/slow-web/
1•speckx•8m ago•0 comments

Programming Tutorials Are Dead

https://robrace.dev/blog/programming-tutorials-are-dead/
2•polysaturate•9m ago•0 comments

Paramount weighs tapping Musk for equity investment

https://www.semafor.com/article/09/23/2026/paramount-weighs-tapping-musk-for-equity-investment
1•cdrnsf•9m ago•0 comments

Show HN: Ox – A local agent that uses the internet for you

https://openox.ai/
1•ziyzhu•9m ago•0 comments

Fire the slop cannons (safely): on coding agents and sandboxing

https://www.latacora.com/blog/2026/09/18/fire-the-slop-cannons-safely-on-coding-agents-and-sandbo...
1•aray07•10m ago•0 comments

Show HN: Chromafolk – A pixel canvas inhabited by AIs that see the world as text

https://chromafolk.world/
1•bcorigliano•11m ago•1 comments

Show HN: Open Java Format – a maintained fork of Palantir-Java-format

https://github.com/openjavaformat/open-java-format
1•abashev•17m ago•0 comments

Cognex to Acquire RealSense, Expanding Machine Vision Robotic Perception Market

https://www.cognex.com/en/company/press-releases/cognex-to-acquire-realsense
1•ripe•19m ago•1 comments

28% of job postings on company career sites have been open over 90 days

https://unlisted.careers/ghost-jobs/report/2026-09
3•rubatrejo•22m ago•2 comments

Show HN: Karpathy's microgpt in Rust and an array language

https://softwarewrighter.github.io/microgpt-mlpl/
1•softwarewright•22m ago•0 comments

Compound Delay: The Causes and Consequences of Later Grandmotherhood

https://www.nber.org/papers/w35773
1•paulpauper•23m ago•0 comments

Nunchux on AMD MI355X: 5s MiniMax-H3 Videos in 1.3s

https://www.nunchux.ai/blog/video-generation-on-amd-mi355x
5•lmxyy•23m ago•1 comments

What I've Been Reading

https://marginalrevolution.com/marginalrevolution/2026/09/what-ive-been-reading-295.html
2•paulpauper•23m ago•0 comments

The Plunging Price of Thought

https://epoch.ai/publications/the-plunging-price-of-thought
4•paulpauper•23m ago•0 comments

AI Is a Boring Technology

https://www.chrbutler.com/ai-is-a-boring-technology
3•delaugust•24m ago•0 comments

You cannot manage your peers

https://louisedeason.substack.com/p/you-cannot-manage-your-peers
3•mheap•24m ago•0 comments

How Scientists Contained a Threat That Could Have Destroyed Humanity

https://www.nytimes.com/2026/09/23/us/asilomar-dna-ai-self-regulation-laws.html
2•dataflow•25m ago•0 comments

gev beats jev and takes images as input too

https://anyeval.com/eval/jevbench/versus?a=typesafe-ai%252Fjev&b=trustedrouter%252Fgev-1.0
1•ljlolel•26m ago•1 comments

Amateur Naturalists Are Helping Scientists Track What Everything Eats

https://news.ncsu.edu/2026/09/who-eats-whom-research/
1•rdmuser•26m ago•0 comments

Show HN: Tenderness – open-source synthetic data generation for VLM/OCR

https://github.com/paperchase-labs/tenderness
1•ohmyjob•26m ago•1 comments

Everyone is hilariously prompt-injecting AI via llms.txt and you aren't

https://installmap.com/research/llms-txt-ai-instructions
2•jakobgreenfeld•27m ago•0 comments

How Deep Is Tulainyo Lake?

https://caseyhandmer.wordpress.com/2026/09/20/how-deep-is-tulainyo-lake/
1•dannyobrien•28m ago•0 comments

The Windows message loop: how applications became reactive

https://www.diagrid.io/blog/agentic-execution-evolution-2-windows-message-loop
1•mwfussell•29m ago•0 comments

Hardware-Agnostic Models in vLLM

https://pytorch.org/blog/hardware-agnostic-models-in-vllm/
1•matt_d•30m ago•0 comments