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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/

Mission-Bound Authorization for OAuth 2.0

https://datatracker.ietf.org/doc/draft-mcguinness-oauth-mission/
1•mooreds•34s ago•0 comments

How to copy URLs of multiple Firefox tabs without installing an extension

https://www.autodidacts.io/how-to-copy-urls-of-multiple-firefox-tabs-without-installing-an-extens...
1•Curiositry•38s ago•0 comments

What Even Is an OS Now?

https://sockpuppet.org/blog/2026/09/25/what-even-is-an-os-now/
1•fratellobigio•1m ago•0 comments

AI and human tutoring yield equivalent GRE learning gains

https://arxiv.org/abs/2609.28470
1•Betelbuddy•4m ago•0 comments

IBM When is Watson going to regain the crown via television?

1•conorcleary•4m ago•1 comments

It's not hypothetical: the dangers of AI are here

https://www.theguardian.com/commentisfree/2026/sep/25/ai-israel-gaza-iran-police-surveillance
3•harry_nutsachs•12m ago•0 comments

Minimal Assumptions for Societal Resilience

https://chillphysicsenjoyer.substack.com/p/minimal-assumptions-for-societal
1•crescit_eundo•12m ago•0 comments

Show HN: Farm.js – A full-stack framework with an AOT compiler for React

https://farmjs.dev/
1•kinfish•14m ago•0 comments

Carnegie: China Passes US as Top AI Talent Hub, 40.6% to 34.2%

https://aiweekly.co/alerts/carnegie-china-passes-us-as-top-ai-talent-hub-406-to-342
2•yogthos•16m ago•0 comments

Show HN: NerfWatch() – Track AI degradation with daily tests and community votes

https://nerfwatch.lol
1•csergiu•17m ago•0 comments

Show HN: BuyerCue – Find potential customer by paid-placement evidence

https://www.buyercue.io
1•apsquared•17m ago•1 comments

Where's the Beef? [video]

https://www.youtube.com/watch?v=4rhShOPHl50
1•gotmedium•18m ago•0 comments

Kafgres: Embedding a Kafka Broker into Postgres

https://rynr.dev/blog/kafgres/
3•enether•18m ago•0 comments

The Animated Elliptic Curve

https://curves.xargs.org/
1•pedropiin•19m ago•0 comments

VAT-Inclusive vs. VAT-Exclusive Pricing: The Math Developers Get Wrong

https://vat-engine.app/blog/vat-inclusive-vs-vat-exclusive-pricing
1•vasyl_kyryliuk•19m ago•0 comments

Manchester City found guilty on 114 charges relating to financial breaches

https://www.nytimes.com/athletic/7049721/2026/09/25/manchester-city-charges-verdict-premier-league/
5•mtlmtlmtlmtl•19m ago•0 comments

IRS launches new mobile app, expanding digital services for taxpayers

https://www.irs.gov/newsroom/irs-launches-new-mobile-app-expanding-digital-services-for-taxpayers
1•duck•22m ago•0 comments

"Someone just sent me an ad that features an AI version of me. What do I do?"

https://bsky.app/profile/lebassett.bsky.social/post/3mwel345jr22s
8•pavel_lishin•22m ago•0 comments

A terminal-first multiplayer thread for agent-authored work

https://www.cueloop.dev/
2•markusmurakaru•23m ago•0 comments

Become the Thousand Servers

https://sabot.media/guides/become-the-thousand-servers/
1•ibobev•26m ago•0 comments

Std: Call_once vs. Std:Async

https://devblogs.microsoft.com/oldnewthing/20260917-00/?p=112706/
1•ibobev•26m ago•0 comments

Comparing exception behavior of magic statics, std:call_once, and std:async

https://devblogs.microsoft.com/oldnewthing/20260918-00/?p=112709/
1•ibobev•27m ago•0 comments

The hottest new hangout for middle schoolers is NPR's comment section?

https://techcrunch.com/2026/09/25/the-hottest-new-hangout-for-middle-schoolers-is-nprs-comment-se...
3•geneticdrifts•27m ago•0 comments

Ask HN: Does your team still have humans review and understand code?

1•taurath•28m ago•0 comments

Show HN: Ekselio – Loveable for Finance Workflows (local first)

https://www.gptbeyond.com/try?home=1
1•kdautaj•29m ago•0 comments

Revealing the details of how OpenAI agents hacked Hugging Face

https://swarmtraces.org/
2•specked-citrus•29m ago•0 comments

FYI: OpenAI "spend limits" aren't always limits

1•iambateman•30m ago•0 comments

Shipping Code Faster Is Not the Bottleneck

https://valentinprugnaud.dev/posts/2026/07/shipping-code-faster-is-not-the-bottleneck
3•conorcleary•32m ago•0 comments

Jev was built for agents, here's how we're using it in computer use instead

https://twitter.com/kylejeong/status/2102108924677927169
4•Kylejeong21•32m ago•0 comments

Human homeostasis is more efficient in social proximity

https://www.science.org/doi/10.1126/sciadv.aeg4937
4•anigbrowl•32m ago•0 comments