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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/

Perfmon – Consolidate your favorite CLI monitoring tools into a single TUI

https://github.com/sumant1122/Perfmon
1•paperplaneflyr•48s ago•0 comments

Hackers breached the EC by poisoning the security tool it used to protect itself

1•t-3•1m ago•0 comments

Addiction by Design

https://mu.xyz/blog/post?id=1775398373075640240
1•asim•1m ago•0 comments

Hallucinated citations are polluting the scientific literature

https://www.nature.com/articles/d41586-026-00969-z
1•Growtika•2m ago•0 comments

We optimized Dash's relevance judge with DSPy

https://dropbox.tech/machine-learning/optimizing-dropbox-dash-relevance-judge-with-dspy
1•gmays•4m ago•0 comments

AI agents promise to 'run the business,' but who is liable if things go wrong?

https://www.theregister.com/2026/04/05/ai_agents_liability/
1•Brajeshwar•4m ago•0 comments

10 years later, no phone has replaced what Google promised

https://www.androidauthority.com/project-ara-10-years-later-modular-phone-dream-3654091/
1•Brajeshwar•4m ago•0 comments

You Weren't Meant for the Factory

https://twitter.com/julianweisser/status/2040110380928868513
1•Brajeshwar•4m ago•0 comments

Comfort Zone

https://bitsplitting.org/2026/02/11/comfort-zone/
1•wallflower•8m ago•0 comments

The Ming shi account of Champa [pdf]

https://ari.nus.edu.sg/wp-content/uploads/2018/10/wps03_003.pdf
1•teleforce•8m ago•0 comments

MCPNest – A discovery platform for 5k MCP servers

https://www.mcpnest.io
1•malasartes•11m ago•0 comments

Show HN: A Solidity CLI Tracer and Debugger

https://github.com/tomw1808/soldebug
1•tomw1808•14m ago•0 comments

'Their Power Feels Like Mine': A Dog Sled Racer Says Goodbye to Her Pack

https://www.nytimes.com/2026/03/18/magazine/sled-dogs-pack-racing-mushing.html
1•bookofjoe•14m ago•1 comments

Tearing Down a Sharded MatMul on TPU

https://considerthebulldog.com/pallas-sharded-matmuls/
1•alivetoad•17m ago•0 comments

How to Design a Memory System for Agents

https://www.okbrain.org/blog/how-to-design-memory-system-for-agents/
2•arunoda•21m ago•0 comments

Three Kinds of Not-Knowing

https://philippdubach.com/posts/three-kinds-of-not-knowing/
1•7777777phil•22m ago•0 comments

Preventing accidental NPM leaks by reviewing the final artifact

https://github.com/divohna/PackAttest
1•packattest•23m ago•1 comments

RFC 9396: OAuth 2.0 Rich Authorization Requests

https://ciamweekly.substack.com/p/rfc-9396-oauth-20-rich-authorization
2•mooreds•25m ago•0 comments

The electric fast-track for emerging markets

https://ember-energy.org/latest-insights/the-electric-fast-track-for-emerging-markets/
2•mooreds•25m ago•0 comments

The Hollow Web

https://page.love/blog/01-the-hollow-web.html
1•mooreds•26m ago•0 comments

MMW: There will be a violent backlash against the weird push for digital ID laws

https://old.reddit.com/r/MarkMyWords/comments/1scjmjs/mmw_there_will_be_a_violent_backlash_agains...
1•mostcallmeyt•27m ago•0 comments

Data Anomalies in Search Console

https://support.google.com/webmasters/answer/6211453?hl=en
1•taubek•27m ago•0 comments

Understand business logic in your code with diagram

https://www.biral.io/
1•dipikasgp•28m ago•1 comments

The People Who Shun Super-Popular Pop Culture

https://www.theatlantic.com/culture/2026/03/pop-culture-hype-aversion/686312/
1•fortran77•28m ago•3 comments

Drivers May Soon Pay Taxes Based on How Much Their Car Weighs

https://www.autoblog.com/news/drivers-may-soon-pay-taxes-based-on-how-much-their-car-weighs
2•zzzeek•29m ago•1 comments

Starving Genies, from Kent Beck

https://tidyfirst.substack.com/p/starving-genies
1•reg_dunlop•33m ago•0 comments

AI facial analysis that runs in the browser (no uploads, 17 metrics)

https://realsmile.online
1•realsmile•34m ago•0 comments

Use Keycloak to Log into Google Workspace via SAML SSO (2024)

https://medium.com/@MszPro/use-keycloak-to-log-into-google-workspace-keycloak-25-saml-sso-a9b9923...
2•walterbell•35m ago•1 comments

Show HN: Cabinet – Kb+LLM (Like Paperclip+Obsidian)

https://runcabinet.com
11•Hilash•37m ago•11 comments

Myth of the AI Oracle

https://www.lawfaremedia.org/article/myth-of-the-ai-oracle
1•GiraffeNecktie•38m ago•0 comments