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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/

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1•ronniojunior•23s ago•0 comments

My MacBook Aged Three Years in Three Months of Vibe Coding

https://generativeai.pub/my-macbook-aged-three-years-in-three-months-of-vibe-coding-64e7ab92123d
1•ako•1m ago•1 comments

Shared Intentionality

https://en.wikipedia.org/wiki/Shared_intentionality
1•binyu•2m ago•0 comments

Servitor – Simplest way to run local dev containers

https://servitorapp.live/
1•havu12•4m ago•0 comments

A device finds encrypted DNS by itself

https://blog.dundns.eu/posts/ddr-encrypted-dns-discovery/
1•olexsmir•4m ago•0 comments

"Code was never the hard part" is an insult to all programmers

https://blog.senko.net/code-was-never-the-hard-part-is-an-insult-to-all-programmers
1•senko•4m ago•0 comments

AI Leaders Say the Singularity Has Begun

https://ai-updates.net/ai-leaders-say-the-singularity-has-already-begun/
1•ashurandi•5m ago•0 comments

Show HN: Gram, a vector search engine I built in C++

https://github.com/sverp/gram
1•sverp•5m ago•0 comments

My Own GitHub: Git, CRDT, Markdown

https://replicated.live/blog/crdt
1•gritzko•6m ago•0 comments

Glycogen Body

https://en.wikipedia.org/wiki/Glycogen_body
1•binyu•6m ago•0 comments

Engineering Metrics for GitHub

https://gitdailies.com/
1•andreigaspar•9m ago•0 comments

Can you hack your gut microbiome?

https://www.economist.com/science-and-technology/2026/08/07/can-you-hack-your-gut-microbiome
1•andsoitis•10m ago•0 comments

Canon-A controlled English for model prompting and agent-to-agent communication

https://github.com/sanshagn/Canon/tree/main
1•sanshagn•11m ago•0 comments

Sit through 15 hours of opera

https://www.economist.com/culture/2026/08/05/why-you-should-sit-through-15-hours-of-opera
1•andsoitis•12m ago•0 comments

Show HN: RankParse – An SEO and backlink data API built from Common Crawl

https://rankparse.com
1•abhibavishi•12m ago•0 comments

Inferring a solar eclipse's ground track from Spanish hotel price surges

https://medium.com/vortechsa/inferring-orbital-mechanics-from-hotel-pricing-3a62f042dc45
1•tachyon5•16m ago•0 comments

Ask HN: What can I do with a single R9700?

1•scott01•19m ago•0 comments

DeepSeek V4-Flash released: 284B params, 1M-token context, free to use

https://ainexusdaily.vercel.app
1•qrify_app•19m ago•0 comments

Program images and portable Scheme back ends for Jolt

https://yogthos.net/posts/2026-08-07-portable-jolt.html
2•yogthos•24m ago•0 comments

Sensitive Info Goes into 'No Reply' Emails Constantly. This Guy Sees It All

https://www.wired.com/story/sensitive-info-goes-into-no-reply-emails-constantly-this-guy-sees-it-...
3•sbulaev•30m ago•0 comments

UK charities count the cost of Beacon CRM cyberattack

https://www.theregister.com/security/2026/08/05/uk-charities-count-the-cost-of-beacon-crm-cyberat...
2•jstanley•30m ago•0 comments

Don't use your phone while you poop

https://nate.spot/no-phone-while-poop/
13•ExMachina73•31m ago•9 comments

At the altar of AI capex, Google is sacrificing the golden goose

https://twitter.com/MaxAnderson/status/2080229375773941871
3•wyclif•33m ago•1 comments

We mapped every data centre on Earth [video]

https://www.youtube.com/watch?v=8M3MciEmC5c
1•skibz•33m ago•0 comments

I built a voice agent that resolves IT/HR support issues end-to-end

https://www.youtube.com/watch?v=GffeCdNQ5JQ
1•ManoBharathi93•34m ago•0 comments

Prinevo Memory: A Domain-Pluggable Context Graph for Long-Term Agent Memory

https://drive.google.com/file/d/1dqX6t-r03SKalM9Fcvz6g0Ixp-8QLXqZ/view?usp=sharing
1•sohitkeshri•35m ago•0 comments

Gentoo bugzilla closed due AI bot scraper overload

https://social.treehouse.systems/@mgorny/117058483039362779
14•happosai•41m ago•0 comments

Banning data centers would blow up the U.S. economy

https://www.noahpinion.blog/p/banning-data-centers-would-blow-up
3•nedruod•43m ago•2 comments

Which editing tool using in 2026?

1•karam_hn•47m ago•1 comments

AI-generated stories rated better quality than human-written ones, study finds

https://www.theguardian.com/technology/2026/aug/05/ai-generated-stories-rated-better-quality-than...
2•Risse•48m ago•0 comments