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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/

OpenAI Comments on the "Wiki Incident"

https://twitter.com/OpenAI/status/2096133504417616165
1•Topfi•2m ago•0 comments

The status and science of the LZ dark matter experiment

https://lz.lbl.gov/
2•throw315•3m ago•0 comments

A browser-based circle and dome planner for Minecraft builders

https://pixelcirclebuilder.com
2•charlesgoodman•5m ago•0 comments

What Will Be Scarce?

https://aleximas.substack.com/p/what-will-be-scarce
1•andsoitis•5m ago•0 comments

Show HN: TokenOps – toward token governance as a first-class discipline

https://github.com/theagentplane/tokenops
1•agentplane•10m ago•0 comments

After Work, We'll Have Each Other

https://asteriskmag.com/issues/15/after-work-we-ll-have-each-other
1•jger15•16m ago•0 comments

How to Accidentally Find 3M Missing People in Argentina [video]

https://www.youtube.com/watch?v=FwLLs1E-sao
1•marklit•18m ago•0 comments

Ask HN: What did you achieve with GPT 6 Astra so far?

1•Mooty•18m ago•0 comments

Shared Memory Consistency from Scratch Part 1: Causality

https://allthoughts.me/blog/shared-memory-consistency-from-scratch-part1/
1•mmozeiko•21m ago•0 comments

Releasing Execution Contexts in Crystal

https://crystal-lang.org/2026/07/12/releasing-execution-contexts/
2•TheWiggles•22m ago•0 comments

What would the last software engineer still need to do?

https://www.coderabbit.ai/blog/the-last-software-engineer-knows-what-to-build
1•Bluestein•23m ago•0 comments

Am I missing something? Is programatically sending SMS globally this bad?

https://chatgpt.com/share/6a9bcd2b-ab9c-83ec-8f26-26a2c85f2ca8
1•nomilk•23m ago•3 comments

How I made Rustdoc 33% faster in one week

https://noahlev.org/blog/2026/08/27/making-rustdoc-faster/
1•birdculture•30m ago•0 comments

AI handles incidents, engineers lose touch with their systems

https://www.sylvainkalache.com/blog/ai-handles-incidents-engineers-lose-touch-with-their-systems
5•sylvainkalache•37m ago•0 comments

Phaseone[big] explains why you should trust OpenAI

https://twitter.com/transitive_bs/status/2096134662246855089
1•transitivebs•39m ago•1 comments

Another Heart Drug Fails, Surprising Cardiologists

https://www.nytimes.com/2026/09/04/science/heart-drug-fails-novartis-pelacarsen.html
2•brandonb•43m ago•0 comments

How the Shell Works [video]

https://www.youtube.com/watch?v=hV3_XZXeDQo
2•vismit2000•45m ago•0 comments

I wrote a VM for Mac to run Windows and Linux, both on iOS

https://github.com/theghostshinobi/SMOKE
3•ghostshinobi•56m ago•0 comments

From Pig to Patient: A First-in-Human Kidney Xenotransplant Bridge

https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(26)01295-X/abstract
1•signa11•58m ago•0 comments

Sugar Reset ReviEwS (2026): We Tried It My Honest Review

https://finance.yahoo.com/healthcare/articles/sugar-reset-drops-introduces-sugarreset-150000696.html
1•gayzsahy•59m ago•0 comments

Bun v1.4.2

https://bun.com/blog/bun-v1.4.2
1•ErenayDev•1h ago•0 comments

Show HN: ForgeGuardian – Open-source software supply-chain security scanner

https://github.com/Mah3Sec/ForgeGuardian
1•mahi1337•1h ago•0 comments

'coarse – AI peer review, of course (MIT license)

https://coarse.ink/
1•idw•1h ago•1 comments

OpenROAD: Open-source toolchain for Chip Design

https://openroad.org
1•firefoxd•1h ago•0 comments

Important MikroTik RouterOS security update

https://forum.mikrotik.com/t/important-security-update/272851
1•ricardbejarano•1h ago•0 comments

UN approves new world map [video]

https://www.youtube.com/watch?v=iHkMK4n925c
1•gurjeet•1h ago•1 comments

SilentPatch 2026 Update

https://silentsblog.com/2026/07/31/silentpatch-2026-update/
1•toilet•1h ago•0 comments

OpenAI's rogue agents used ntfy.sh as a pub/sub channel

2•coderinsan•1h ago•0 comments

Bespoke: A Programming Language for People Who Say Please

https://blog.hofstede.it/bespoke-a-programming-language-for-people-who-say-please/
3•Naru1974•1h ago•0 comments

Global Existing Smartphone Prices Climb About 15% in 2026

https://counterpointresearch.com/en/insights/global-existing-smartphone-prices-climb-about-15-per...
1•giuliomagnifico•1h ago•0 comments