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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

Razor 1911 [video] (first place at revision 2026 demoparty) [video]

https://www.youtube.com/watch?v=2AnbYNudAyM
1•msk-lywenn•5m ago•0 comments

Show HN: SwellSlots – Grid Based Surf Forecast App with a Street Fighter 2 UI

https://swellslots.com
1•rawoke083600•6m ago•0 comments

Deskilling

https://en.wikipedia.org/wiki/Deskilling
1•sph•8m ago•0 comments

FREDCode – Empowering Claude for Macro Fred Research

https://www.modolap.com/publication/fred-1#
1•ronfriedhaber•8m ago•0 comments

Did WordPress VIP leak my phone number?

https://shkspr.mobi/blog/2026/04/did-wordpress-vip-leak-my-phone-number/
2•robin_reala•10m ago•0 comments

Would appreciate feedback on a small project I've been working on

https://storylinn.com
1•Storylinn•10m ago•1 comments

Medvi, the AI telehealth is fueled by ads from doctors who don't appear to exist

https://www.businessinsider.com/medvi-ai-weight-loss-millions-ai-advertising-legal-compliance-cha...
1•__natty__•11m ago•0 comments

New Windows Privilege Escalation

https://www.bleepingcomputer.com/news/security/disgruntled-researcher-leaks-bluehammer-windows-ze...
2•ospray•13m ago•0 comments

A Conversation with Paul Masurel, Creator of Tantivy

https://www.paradedb.com/blog/tantivy-interview
1•jamesgresql•15m ago•1 comments

Factoring is not a good benchmark to track Q-day

https://bas.westerbaan.name/notes/2026/04/02/factoring.html
1•fanf2•17m ago•0 comments

Rocq 9.2.0 Released

https://rocq-prover.org/doc/v9.2/refman/changes.html#version-9-2
1•baruchel•17m ago•0 comments

AI Company Clones Musician's Voice, Then Copyright-Strikes Her Own Songs

https://rudevulture.com/ai-company-clones-musicians-voice-then-copyright-strikes-her-own-songs/
3•doener•20m ago•0 comments

Draw it yourself: Checking Trump's tariff claims a year later

https://www.reuters.com/graphics/USA-TRUMP/TARIFF-ANNIVERSARY/myvmybzwbvr/
2•giuliomagnifico•20m ago•0 comments

Show HN: Open-Source Higgsfiled AI Alternative

https://github.com/Anil-matcha/Open-Higgsfield-AI
1•Kumar963•22m ago•2 comments

Oneness Is All You Need

https://www.birkey.co/2026-04-05-oneness-is-all-you-need.html
1•signa11•22m ago•0 comments

Why your new computer is SLOWER than your OLD computer [video]

https://www.youtube.com/watch?v=t992ul_IKtc
3•tiernano•25m ago•0 comments

Ask HN: How do you get feedback for your products?

1•asim•25m ago•2 comments

Show HN: GifForge – A 2.2MB privacy-first iOS Video to GIF tool

https://apps.apple.com/cn/app/gifforge/id6761457073
1•wangbaobaoOi•27m ago•0 comments

Telegram's AI Silently Rewrites Your Political Opinions. I Extracted the Proof

https://medium.com/@metraoklam/extracting-system-prompt-model-identity-from-telegrams-ai-feature-...
3•armalko•29m ago•1 comments

LLM may be standardizing human expression – and subtly influencing how we think

https://dornsife.usc.edu/news/stories/ai-may-be-making-us-think-and-write-more-alike/
19•giuliomagnifico•30m ago•4 comments

Milla Jovovich's MemPalace Claims 100% on LoCoMo. Its Benchmarks.md Disagrees

https://penfieldlabs.substack.com/p/milla-jovovich-just-released-an-ai
3•dial481•30m ago•0 comments

Modolap – Codex-Native OLAP Service

https://www.modolap.com
1•ronfriedhaber•31m ago•0 comments

Fabian's Arena

https://matthewculnane.co.uk/posts/fabians-arena
1•paulcapewell•32m ago•0 comments

Show HN: LookAway 2.0 – a break reminder for Mac that respects what you're doing

https://lookaway.com
2•_kush•32m ago•0 comments

A filtered SaaS stack for solo founders – no paid placements

https://curated-software.deals
1•Chartysan•33m ago•1 comments

Show HN: Serif.sh – it's like ray.so for quotes (Open source)

https://github.com/ticketping-com/serif-sh
1•raviojha•34m ago•0 comments

Russia blocks messengers and VPNs – and its banks too

https://www.heise.de/en/news/Russia-blocks-messengers-and-VPNs-and-its-banks-too-11246142.html
3•doener•36m ago•1 comments

C3 0.7.11: closing out the 0.7 series before 0.8

https://c3-lang.org/blog/c3-0-7-11-the-last-v0-7/
3•lerno•36m ago•1 comments

Betting on a code-first approach to privacy

https://www.openpolicy.sh/blog/code-first
3•vr46•37m ago•0 comments

Semantic HTML Just Might Make Your CSS Less Fragile

https://schalkneethling.com/posts/semantic-html-just-might-make-your-css-less-fragile/
3•speckx•39m ago•0 comments