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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/

Users cry foul after AMD stripped memory crypto from its consumer CPUs

https://arstechnica.com/security/2026/06/users-cry-foul-after-amd-stripped-memory-crypto-from-its...
1•helterskelter•54s ago•0 comments

David Attenborough's life's work, searchable

https://attenborough-100.vercel.app/
1•mooreds•1m ago•0 comments

Coding agents have no moat

https://tombedor.dev/coding-agents-have-no-moat/
1•mooreds•1m ago•0 comments

Nobody clicks your share buttons

https://derekhanson.blog/nobody-clicks-your-share-buttons/
1•mooreds•1m ago•0 comments

Heavyweight, to whom it may concern

https://neural.it/2026/05/heavyweight-to-whom-it-may-concern/
1•jruohonen•3m ago•0 comments

Show HN: tot.page – git-backed publishing for HTML and Markdown

https://tot.page/
1•ramoz•4m ago•0 comments

Current and Future Megaconstellations [video]

https://www.youtube.com/watch?v=cfOgp9gp2hA
1•ColinWright•4m ago•0 comments

AI may read a different PDF than your users

https://pqpdf.com/ai-document-integrity.php
1•pqpdf•7m ago•0 comments

Blood Tests Can Now Detect Alzheimer's. Should You Get One?

https://www.wsj.com/health/wellness/blood-tests-can-now-detect-alzheimers-should-you-get-one-9528...
1•JumpCrisscross•9m ago•0 comments

Upstream and Downstream Are Not Directions

https://piljoong.dev/posts/upstream-and-downstream-are-not-directions/
1•speckx•10m ago•0 comments

The Pissed-Off Spouses Who Try to Intervene in Their Partners' Jobs

https://slate.com/life/2026/06/work-job-wife-husband-kid-partner-boss-call.html
1•tekdude•12m ago•0 comments

Show HN: World Cup TUI with Live Updates

https://github.com/perryraskin/world-cup-tui
1•perryraskin•14m ago•1 comments

The FTC Cracked Down on 'Hidden' Car Dealer Fees. They're Still Happening

https://www.wsj.com/business/autos/the-ftc-cracked-down-on-hidden-car-dealer-fees-theyre-still-ha...
2•JumpCrisscross•15m ago•0 comments

Alberta Eradicated Rats

https://worksinprogress.co/issue/albertas-war-on-rats/
1•deunamuno•15m ago•0 comments

Why long context eats your VRAM: the KV cache explained

https://vettedconsumer.com/the-kv-cache-explained-why-long-context-eats-your-vram-and-how-to-fit-...
1•ermantrout•16m ago•0 comments

Show HN: Vet Turned Founder, AI Lawn Diagnosis

https://grassdx.com/
1•andrewbr•17m ago•0 comments

Heikki's Garden of Flowers, a catalogue of pictorial letterpress works

https://garden-of-flowers.heikkilotvonen.com/?essay
1•NaOH•17m ago•0 comments

Ask HN: How do you track commitments you make to other people in conversation?

1•annonymousjaat•17m ago•1 comments

Single dose of magic mushroom psychedelic can cause anatomical brain changes

https://www.theguardian.com/science/2026/may/05/magic-mushrooms-psychedelic-changes-brain-anatomy...
3•helterskelter•17m ago•0 comments

Google vs. Oracle (2021)

https://en.wikipedia.org/wiki/Google_LLC_v._Oracle_America,_Inc.
1•tosh•18m ago•0 comments

Game Engine White Papers Commander Keen

https://forgottenbytes.net/commander_keen.html
2•mfiguiere•20m ago•0 comments

Anti-slopping: An innovation for rectifying LLM writing clichés

https://research.thoughtworks.com/library/anti-slopping-an-innovation-for-rectifying-llm-writing-...
1•freeatnet•22m ago•0 comments

JD Vance Confirms Iran Will Get Jaw-Dropping Sum Under Trump Deal

https://newrepublic.com/post/211826/jd-vance-us-pay-iran-billions-trump-deal
9•nothrowaways•24m ago•5 comments

A Clojure Dialect on Rust

https://clj.rs
1•caseym831•24m ago•0 comments

At Berkeley, the enrollment dip [in CS] has come from a supply-side constraint

https://alumni.berkeley.edu/california-magazine/2026-summer/major-issue/
1•jedberg•25m ago•1 comments

Oura and Counsel Health Partner to Provide AI-Enabled Care Within the Oura App

https://ouraring.com/blog/counsel-integration-oura-app/
1•bariumbitmap•26m ago•0 comments

AI and Amateurism

https://pluralistic.net/2026/06/15/vernacular/
1•hn_acker•27m ago•0 comments

Show HN: Turboquant.cpp – Quantize embeddings to 1-4 bits, no training (400 LoC)

https://github.com/RunEdgeAI/turboquant.cpp
1•andrewmikhail•27m ago•0 comments

Ask HN: Whats your intuition on AGI breakthrough?

5•filup•30m ago•1 comments

Ask HN: Did your (non-AI) research field get less fun after commercialization?

1•blt•30m ago•0 comments