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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Stackoverflow Is Down

https://stackoverflow.com/
1•ahmetozer•31s ago•0 comments

Be Nice to Recruiters

https://natashajaffe.substack.com/p/be-nice-to-recruiters
1•mooreds•3m ago•0 comments

Europe's water reserves drying up due to climate breakdown

https://www.theguardian.com/environment/2025/nov/29/climate-crisis-depleting-europe-groundwater-r...
1•mooreds•3m ago•0 comments

Stackoverflow Outage

https://www.stackstatus.net/
4•ga_to•4m ago•0 comments

Wikifunctions

https://www.wikifunctions.org/wiki/Wikifunctions:Catalogue
1•3rd3•5m ago•0 comments

The Enforced Conformity

https://smartmic.bearblog.dev/enforced-conformity/
1•smartmic•6m ago•0 comments

Online Documentation for Qt 6, KDE Frameworks, etc. for C and Zig

https://gist.github.com/rcalixte/63757948a7bf4190b469ff09c5ad7a67
1•rcalixte•7m ago•0 comments

How to Learn Something New

https://newsletter.bphogan.com/archive/issue-47-a-personal-learning-plan/
1•mooreds•9m ago•0 comments

Foundry IQ: a knowledge layer for agents

https://techcommunity.microsoft.com/blog/azure-ai-foundry-blog/foundry-iq-unlocking-ubiquitous-kn...
1•pmc00•9m ago•0 comments

Tell HN: Taking a Time Capsule Through HN

1•chistev•10m ago•0 comments

Husband and wife accused of using spycam and earpieces to win almost £600k at

https://www.bbc.co.uk/news/articles/c075zd0j2j3o
3•chrisjj•15m ago•2 comments

Aristotle from Harmonic has solved this Erdos problem

https://www.erdosproblems.com/forum/thread/124#post-1892
1•cjbarber•15m ago•0 comments

Git Your Freedom Back: A Beginner's Guide to Sourcehut

https://btxx.org/posts/beginners-guide-sourcehut/
1•zdw•19m ago•0 comments

Janissary

https://en.wikipedia.org/wiki/Janissary
1•simonebrunozzi•20m ago•0 comments

Show HN: Memory Lane – bootstrap your naive Claude instances with their history

https://github.com/jMyles/memory-lane
1•jMyles•24m ago•1 comments

The Value of the Physical World in an AI-Obsessed Era

https://ana15.substack.com/p/playing-to-your-strengths
1•ana15•25m ago•0 comments

Hereford man jailed over extreme right-wing music

https://www.bbc.com/news/articles/cg4n5k2lq7no
1•Jigsy•27m ago•0 comments

RIP Twitter API: A eulogy to its vast research contributions

https://arxiv.org/abs/2404.07340
2•Anon84•28m ago•0 comments

Non-quantum structural entanglement: a new model of system linking

https://zenodo.org/records/17710529
1•flexionU•29m ago•0 comments

Abstract Wikipedia

https://en.wikipedia.org/wiki/Abstract_Wikipedia
2•evah•30m ago•0 comments

The Kids Will Be Alright

https://ben-mini.com/2025/the-kids-will-be-alright
2•bewal416•31m ago•0 comments

PostgreSQL's Index Monitoring with Pg_stat_insights

https://www.pgelephant.com/blog/pg-stat-insights-index-monitoring
1•pgelephant2025•31m ago•0 comments

ChatGPT launched three years ago today

https://techcrunch.com/2025/11/30/chatgpt-launched-three-years-ago-today/
4•frays•32m ago•1 comments

Now Poorer Countries Are Shutting the Door on Refugees Too

https://www.wsj.com/world/africa/now-poorer-countries-are-shutting-the-door-on-refugees-too-932d42eb
2•JumpCrisscross•32m ago•0 comments

Am I Wrong?

1•jazzm•34m ago•2 comments

"Boobs check" verify if sites behind CDN are hosted in Inside Iran or not

https://twitter.com/hkashfi/status/1995109785679573167
17•defly•34m ago•0 comments

Data Centers Are a 'Gold Rush' for Construction Workers

https://www.wsj.com/business/data-centers-are-a-gold-rush-for-construction-workers-6e3c5ce0
3•JumpCrisscross•36m ago•0 comments

Show HN: Thermodynamic Alignment Forces Gemini Thinking into "Burn Protocol"

https://github.com/CodeIncept1111/Sovereign-Stack
1•CodeIncept1111•38m ago•1 comments

18 Months of Events Fit on Four Floppy Disks

https://docs.eventsourcingdb.io/blog/2025/12/01/18-months-of-events-fit-on-four-floppy-disks/
1•goloroden•38m ago•0 comments

How to run phones while being struck by suicide drones

https://nasa.cx/hn/posts/how-to-run-hundreds-of-phones-while-being-struck-by-suicide-drones/
32•nasaok•39m ago•13 comments