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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/

The Making of Cursor's Icons

https://www.minoradventures.co/blog/the-making-of-cursors-icons
1•kaizenb•2m ago•0 comments

One writer, twelve workers, zero rows

https://dev.profullstack.com/~anthony/blog/019-post.html
1•buffer_overlord•6m ago•0 comments

Thoughts About Scaling Law

https://twitter.com/jietang/status/2089941544581403107
1•tosh•10m ago•0 comments

Bezier Curves from the Ground Up (2016)

https://jamie-wong.com/post/bezier-curves/
1•vismit2000•11m ago•0 comments

Bun 1.4 Rust rewrite is not looking good

https://tipiirai.com/writing/bun-rust-rewrite-worries
12•tipiirai•11m ago•1 comments

Lattice: An isometric game kit designed to be written by agents

https://lattice.aniruddh.tech/
1•achandratre•12m ago•0 comments

ChatGPT for Teens

https://help.openai.com/en/articles/20001421-chatgpt-for-teens
1•Bluestein•16m ago•0 comments

Teen Culture Has Always Been Co-Opted. In 2026, It's Reached New Heights

https://www.teenvogue.com/story/teen-culture-has-always-been-marketable-in-2026-its-reached-new-h...
1•Tomte•16m ago•0 comments

The Pentagon Wars

https://en.wikipedia.org/wiki/The_Pentagon_Wars
1•Bluestein•19m ago•0 comments

Ask HN: How to Share Tools with Coworkers

1•lordlaw•19m ago•0 comments

China orders state agencies to uninstall Windows as it cuts dependence on US

https://www.indiatoday.in/technology/news/story/china-orders-state-agencies-to-uninstall-windows-...
3•roflcopter69•21m ago•0 comments

Time Travel on Professional Profiles

https://www.nber.org/papers/w35546
2•helsinkiandrew•22m ago•0 comments

Tough days at GitHub, a continuing series

https://surfingcomplexity.blog/2026/08/18/tough-days-at-github-a-continuing-series/
1•azhenley•24m ago•0 comments

Curvature Beziers – Improving on a timeless recipe

https://acko.net/blog/curvature-beziers/
1•boxed•26m ago•0 comments

Susan Kare:Designing Icons and Graphics for the Original Mac [video]

https://www.youtube.com/watch?v=YEvLKzsEwMw
1•dhruv3006•28m ago•0 comments

Data inaccessible on Microsoft 365 for nonprofits

https://www.reddit.com/r/nonprofit/comments/1ub52pt/data_inaccessible_on_microsoft_365_for_nonpro...
1•petethomas•29m ago•0 comments

Ask HN: Software Design resources on the lower/class/module level

1•needfish•31m ago•0 comments

ZEON – A token-efficient data format for LLMs

https://zeon-eight.vercel.app/
1•Schicksal•34m ago•0 comments

Our summer fastest-growing vendors list just dropped

https://twitter.com/brexHQ/status/2089412872094773735
1•porridgeraisin•36m ago•0 comments

Designing AI with character: what we learned building Berd

https://block.xyz/inside/designing-ai-with-character-what-we-learned-building-berd
1•thm•36m ago•0 comments

"Hill-climbing" is Silicon Valley's latest bit of shit jargon

https://nudged.himynamesdave.com/musings/hill-climbing-is-silicon-valleys-latest-bit-of-shit-jargon/
1•panoramas4good•37m ago•0 comments

Get feedback on your AI slop. no accounts

https://slopornot.simplicated.dev
1•karenimnotkaren•38m ago•0 comments

Show HN: AnswerRank – AEO Tool for online businesses

https://answerrank.so/
1•not_wowinter14•39m ago•0 comments

Show HN: Online Bubble Level

https://abubblelevel.com/
1•artiomyak•42m ago•0 comments

Ask HN: Cloudflare Smart Placement

1•bansalvip•44m ago•0 comments

AI Stock Research Assistant · Streamlit

https://ai-stock-research-kiaan.streamlit.app
1•KiaanKothari•45m ago•1 comments

Looking for an ArXiv Endorser – AI / Computer Science

https://github.com/paibyun9/EGA-V9
1•lcm3•47m ago•2 comments

BYOKs for an LLM with a Brain

https://alicebraincore.web.app
1•kindsocial•47m ago•0 comments

The DuckDB MySQL engine at 500 GB

https://www.percona.com/blog/the-duckdb-mysql-engine-at-500-gb/
2•theanonymousone•50m ago•0 comments

Penn State cocaine trafficking ring involved 2 fraternities, authorities say

https://abcnews.com/US/wireStory/penn-state-cocaine-trafficking-ring-involved-2-fraternities-1357...
3•vinni2•51m ago•1 comments