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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/

Ask HN: Im a back end dev, how do you go from designing the UI with AI?

2•cristyg0101•4m ago•0 comments

A Technical Deep Dive into the New Raycast

https://www.raycast.com/blog/a-technical-deep-dive-into-the-new-raycast
1•vaishnavsm•12m ago•0 comments

VI65 Text Editor - vi for the 6502

https://vi65.sourceforge.net/
1•rbanffy•12m ago•0 comments

2028: Two scenarios for global AI leadership

https://www.anthropic.com/research/2028-ai-leadership
3•pretext•14m ago•0 comments

Power up your Domain Specific Language

https://slangify.org/
3•librasteve•29m ago•1 comments

Show HN: Pairfuse – Professional Photoshoots for Couples

https://pairfuse.com
1•katerina198b•34m ago•1 comments

Windscribe – We'll move HQ and take our taxes elsewhere

https://twitter.com/windscribecom/status/2055044048122003569
3•mvdwoord•37m ago•0 comments

America is experiencing a productivity miracle

https://www.economist.com/finance-and-economics/2026/05/11/america-is-experiencing-a-productivity...
2•edward•37m ago•0 comments

UUID vs. NanoID – ID Generation Compared

https://tools.pinusx.com/compare/uuid-vs-nanoid
1•ankitg12•38m ago•0 comments

One-of-One Indirapuram Sets a New Standard for Luxury Living

https://realty.economictimes.indiatimes.com/news/brand-connect-initiative/harmandeep-singh-kandha...
1•KirtiKKapoor•38m ago•0 comments

Court upholds discrimination ruling after male excluded from female-only app

https://www.abc.net.au/news/2026-05-15/nsw-tickle-v-giggle-judgement-transgender-woman/106682498
2•wrwr•38m ago•1 comments

Get best online coupons and promo codes and deals of hot brands

https://www.timelycoupons.com
1•oopp0302•39m ago•0 comments

Ask HN: How to be SOC2 Type 2 compliant as a solo-entreprenuer?

8•sochix•43m ago•12 comments

Zero-day exploit defeats default Windows 11 BitLocker protections

https://arstechnica.com/security/2026/05/zero-day-exploit-completely-defeats-default-windows-11-b...
4•ndsipa_pomu•44m ago•0 comments

Have you switched to AI for heart monitoring during physical activity yet?

1•accofrisk•45m ago•1 comments

Slopsmith: A Self-Hosted Rocksmith Alternative That Runs in Docker

https://github.com/byrongamatos/slopsmith
2•steveharing1•46m ago•1 comments

Jelly Tide: My Honest 30-Day Results (Shocking Before and After)

https://finance.yahoo.com/sectors/healthcare/articles/jelly-tide-gummies-exploding-2026-154100263...
1•ragymkalu•53m ago•0 comments

Establishing AI and data sovereignty in the age of autonomous systems

https://www.technologyreview.com/2026/05/14/1137168/establishing-ai-and-data-sovereignty-in-the-a...
2•joozio•53m ago•0 comments

Turn a bare VPS into an operational fortress in 15 minutes and 1 command

1•rockballslab•54m ago•0 comments

Cerebras risked dinner plate-sized AI accelerators. Today it's worth $66B

https://www.theregister.com/ai-ml/2026/05/15/cerebras-wafer-scale-ai-bet-delivers-blockbuster-ipo...
1•beardyw•56m ago•0 comments

'Everyone is unhappy': Meta faces grim mood, plans 8k layoffs soon amid cuts

https://www.aol.com/finance/everyone-unhappy-meta-employees-describe-151500588.html
4•01-_-•58m ago•0 comments

AI that improves itself indefinitely

https://techcrunch.com/2026/05/14/what-happens-when-ai-starts-building-itself/
3•russfink•58m ago•0 comments

PyCon US 2026 Typing Summit Recap

https://bernat.tech/posts/pycon-us-2026-typing-summit-recap/
2•gaborbernat•59m ago•1 comments

Morgan Stanley Bitcoin ETF $MSBT got an official listing announcement from NYSE

https://twitter.com/EricBalchunas/status/2036831654392561983
3•janandonly•1h ago•0 comments

The era of 15GB free Gmail storage is ending

https://www.androidauthority.com/google-gmail-5gb-free-storage-test-3667002/
8•01-_-•1h ago•3 comments

Android rolling out AI-powered "Contextual suggestion" learning from your habits

https://9to5google.com/2026/05/13/android-contextual-suggestions/
2•theanonymousone•1h ago•0 comments

AI makes weak engineers less harmful

https://www.seangoedecke.com/ai-makes-weak-engineers-less-harmful/
2•vismit2000•1h ago•0 comments

Google lets you move passkeys to another password manager on Android

https://www.androidauthority.com/google-passkeys-move-to-another-password-manager-android-3666965/
1•vdelitz•1h ago•0 comments

Out of the Tar Pit (2006) [pdf]

https://curtclifton.net/papers/MoseleyMarks06a.pdf
1•theanonymousone•1h ago•0 comments

A Design Space and Interaction Model of Abstraction in Interactive Systems

https://arxiv.org/abs/2605.11344
1•mrauha•1h ago•0 comments