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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Kay Nishi and the Meeting That Started MS-DOS

https://nemanjatrifunovic.substack.com/p/kay-nishi-and-the-meeting-that-started
1•rbanffy•1m ago•0 comments

Whatever Happened to the Near East?

https://jonn.substack.com/p/whatever-happened-to-the-near-east
1•thunderbong•2m ago•0 comments

The Two Europes

https://www.siliconcontinent.com/p/the-two-europes
1•akyuu•3m ago•0 comments

TellmeTruth, open source ledger mapping institutional claims to traceable data

https://tellmetruth.live/
1•L0nl0n•4m ago•0 comments

Rcall – recursive text search in file names and content, written in Nim

https://github.com/isuzano/rcall
1•isuzano•6m ago•0 comments

I built an affordable alternative to AppTweak and Sensor Tower ($19.99 lifetime)

https://appstorestatistics.com/
1•tkrenn06•9m ago•0 comments

Kioxia and Dell cram 10 PB into slim 2RU server

https://www.blocksandfiles.com/flash/2026/05/14/kioxia-and-dell-cram-10-pb-into-slim-2ru-server/5...
1•rbanffy•10m ago•0 comments

Copify: free, offline clipboard manager for Mac with search and pinning

https://github.com/rkeshri04/Copify
7•rkeshri•10m ago•0 comments

Evolution and the Industrial Revolution: New Evidence for the Galor-Moav Theory [pdf]

https://warwick.ac.uk/fac/soc/economics-staging/staff-backup/omoav/evidence_brief.pdf
1•akyuu•10m ago•0 comments

Technofascism

https://third-bit.com/2026/05/15/technofascism/
4•speckx•12m ago•0 comments

A rare disease spills secrets about the brain's amygdala – Knowable Magazine

https://knowablemagazine.org/content/article/mind/2026/genetic-disease-reveals-role-of-brain-amyg...
2•rbanffy•13m ago•0 comments

The Agricultural Origins of Time Preference

https://pmc.ncbi.nlm.nih.gov/articles/PMC5541952/
1•akyuu•14m ago•0 comments

Richard Sutton – Father of reinforcement learning thinks LLMs are a dead end [video]

https://www.youtube.com/watch?v=21EYKqUsPfg
1•evo_9•16m ago•0 comments

2. Brah Min

https://suryawaters.substack.com/p/2-brah-min
1•surya_waters•18m ago•1 comments

The shock of seeing your body used in deepfake porn

https://www.technologyreview.com/2026/05/14/1137161/ai-porn-nonconsensual-deepfakes-takedown-pira...
1•joozio•20m ago•0 comments

Seeing and Hearing Internet Background Radiation

https://knock-knock.net/internet-background-radiation
3•djkurlander•21m ago•1 comments

A Single-Molecule Spin-Photon Interface

https://arxiv.org/abs/2605.10077
1•rolph•21m ago•0 comments

Impeaching Every Federal Judge and Justice Who Endorsed Unitary Executive Theory

https://cmarmitage.substack.com/p/the-case-for-impeaching-and-removing
2•fprog•21m ago•0 comments

Show HN: Rocksky – Music scrobbling and discovery on the AT Protocol

https://tangled.org/rocksky.app/rocksky
2•tsiry•22m ago•0 comments

You don't know HTML Lists

https://blog.frankmtaylor.com/2026/05/13/you-dont-know-html-lists/
30•speckx•24m ago•1 comments

Why Do Some Breads Dry Out Faster Than Others

https://kestrel.bearblog.dev/why-do-some-breads-dry-out-faster-than-others/
1•speckx•24m ago•0 comments

What If the Universe Had No Beginning? Part 1: A Wave Function for the Universe

https://www.universetoday.com/articles/what-if-the-universe-had-no-beginning-part-1-a-wave-functi...
2•rbanffy•25m ago•0 comments

Are humans still good enough for coding?

https://gyptazy.com/blog/coding-after-ai-are-humans-still-good-enough/
1•JohnDohnBohn•26m ago•0 comments

OpenAI's Founding Story Told Through Musk vs. Altman Trial Exhibits

https://www.plainsite.org/documents/collection.html?name=musk-v-altman-et-al&view=grid
3•thinkcomp•26m ago•0 comments

Molecules emerge as a new kind of building block for quantum computers

https://www.science.org/content/article/molecules-emerge-new-kind-building-block-quantum-computers
4•rolph•26m ago•0 comments

Can opportunities for tax evasion increase tax revenue?

https://academic.oup.com/ej/advance-article-abstract/doi/10.1093/ej/ueag054/8667139?login=false
2•paulpauper•27m ago•0 comments

Osiris – An open-source Palantir alternative for global intelligence

https://www.osirisai.live/
4•Shmrad•28m ago•0 comments

What an "agent-native cloud" needs to look like

https://twitter.com/QuinnyPig/status/2055497559813304735
4•tosh•28m ago•0 comments

Good taste isn't a Good Thing. It's just admirable

https://ramblingafter.substack.com/p/good-taste-isnt-a-good-thing-its
2•paulpauper•28m ago•0 comments

The Theory of Trade

https://nicholasdecker.substack.com/p/the-theory-of-trade
2•paulpauper•28m ago•0 comments