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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/

Zero-knowledge SAT validation engine

https://ptsf-engine.vercel.app/
1•curio_Pol_curio•9m ago•0 comments

Type Theory Forall #62 – Dependent Haskell – Vladislav Zavialov [video]

https://www.youtube.com/watch?v=COBZZb6Iu2Q
2•matt_d•12m ago•0 comments

Automating my job away

https://austinhenley.com/blog/automatingmyjob.html
1•azhenley•12m ago•0 comments

The Redistribution of Housing Wealth Caused by Rent Control [pdf]

https://www.rhawa.org/file/secure/shs-the-impact-of-rent-control-in-st-paul.pdf
7•luu•18m ago•1 comments

Half-Life able to run on ReactOS

https://xcancel.com/reactos/status/2064839936059011207
2•zdw•18m ago•1 comments

Making Claude a Chemist

https://www.anthropic.com/research/making-claude-a-chemist
5•gmays•22m ago•0 comments

Life Evolved

https://github.com/harrisjerico30-dotcom/G4-construct-
3•jericoharris•26m ago•0 comments

Weave: Merging based on language structure and not lines

https://ataraxy-labs.github.io/weave/
3•rohanat•31m ago•1 comments

Show HN: Tabby – sleeps tabs based on RAM pressure, not fixed timers

https://meettabby.netlify.app/
2•justbuilding•35m ago•0 comments

Show HN: Bastion – isolated Linux VMs for background coding agents

https://bastion.computer/
1•almostlit•38m ago•0 comments

Thirty Years My Open Source Project: The ApeSDK/Noble Ape

https://apesdk.com/
1•barbalet•43m ago•1 comments

The Rise of Housing Nationalism in Canada and Transnational Ownership Patterns

https://open.library.ubc.ca/media/stream/pdf/52383/1.0438798/5
2•luu•44m ago•0 comments

I will put a talking persona on your website

https://www.usegoblin.xyz
1•Obi-•45m ago•2 comments

AUR Malware Attack: Do Not Update [video]

https://www.youtube.com/watch?v=WoxR7fGl4CI
1•kshri24•45m ago•3 comments

Building a serial and VGA "everything console"

http://oldvcr.blogspot.com/2026/06/building-serial-and-vga-everything.html
2•classichasclass•46m ago•0 comments

Quadratic funding democratizes allocation by rewarding projects w/ broad support

https://internetfreedom.torproject.org/funding-distribution/
2•Cider9986•46m ago•0 comments

If your sex life is dead, you can blame Steve Jobs

https://www.theregister.com/personal-tech/2026/06/09/study-links-iphone-rollout-to-decline-in-us-...
6•fallinditch•47m ago•1 comments

Make stolen phones unusable, Met Police urges tech giants

https://www.bbc.com/news/articles/ckg4dey905yo
2•gnabgib•48m ago•0 comments

Judge re-opens eBay harassment lawsuit after settlement talks break down

https://www.universalhub.com/2026/judge-re-opens-lawsuit-over-way-ebay-terrorized-natick-couple-a...
2•ilamont•52m ago•0 comments

Open-Cowork: open-source alternative to Claude Cowork with BYOK

https://github.com/coasty-ai/open-cowork
1•PrateekJ1703•59m ago•0 comments

Apt Encounters of the Third Kind

https://igor-blue.github.io/2021/03/24/apt1.html
3•ogurechny•1h ago•0 comments

Brew Browser – A Native macOS GUI for Homebrew

https://brew-browser.zerologic.com/
1•jonbaer•1h ago•0 comments

Show HN: Inkwash, a watercolor sketching app and explanation

https://johnowhitaker.github.io/inkwash/about
1•Yenrabbit•1h ago•0 comments

The Australian Town Where More Than Half the Population Lives Underground

https://terralocate.com/interesting/coober-pedy-australia-underground-town
1•thunderbong•1h ago•0 comments

Download Free Marketing Software

https://www.coolmarketingsoftware.com/osclass-submitter/
2•bokeke1•1h ago•0 comments

What Should I Build?

1•gooob•1h ago•0 comments

ClawMoat, runtime containment for AI agents after Fable 5

https://clawmoat.com/
1•ildar•1h ago•0 comments

5.3M-year-old deep-sea whale necropolis in the Diamantina Zone

https://www.nature.com/articles/s41586-026-10546-z
4•defrost•1h ago•0 comments

Ask HN: Which cheap Chinese LLM are you using?

5•linzhangrun•1h ago•0 comments

GIER: A Danish computer from 1961 with a role in the modern astronomy

https://arxiv.org/abs/1704.05828
1•andrewstuart•1h ago•0 comments