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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/

My agent hacked my gym

http://web.archive.org/web/20260516025532/https://www.affinda.com/expert-insights/when-my-ai-agen...
1•tmrtsmith•1m ago•1 comments

Previous-Token Prediction Based LLM Near-Exact Prompt Reconstruction

https://arxiv.org/abs/2607.29378
1•doener•1m ago•0 comments

Show HN: LidAwake – Keep your Mac awake with the lid closed (200 lines of Swift)

https://github.com/deezeddd/LidAwake-Mac
1•deezedd•2m ago•0 comments

Tiled Rasterization for Large DOM Captures

https://snapdom.dev/blog/huge-page-mosaic/
2•tinchox6•3m ago•0 comments

Introducing Grok Bot

https://xcancel.com/antibot/captcha
1•StanAngeloff•3m ago•0 comments

The Fanfare Around the Band Geese Was a Psyop

https://www.wired.com/story/geese-chaotic-good-marketing-industry-plant/
1•dbl000•3m ago•0 comments

Show HN: Personal AI Policy Directory

https://howiai.directory/
1•emilesilvis•4m ago•0 comments

Firefly Aerospace hits record $117.7M Q2 revenue, beating estimates by 34%

https://runtimewire.com/article/firefly-aerospace-hits-record-117-7m-q2-revenue-beating-estimates...
1•ryanmerket•4m ago•0 comments

Blend2D – High Performance 2D Vector Graphics

https://blend2d.com/
2•coffeeaddict1•5m ago•0 comments

Rocky Linux Founder Kurtzer Launches OpenWALDO to Open Up AI Training Data

https://techstrong.ai/articles/rocky-linux-founder-gregory-kurtzer-launches-openwaldo-to-open-up-...
2•CrankyBear•6m ago•0 comments

Glyph – Content intelligence without the baggage

https://github.com/Koda-OSS/Glyph
2•justinthemax•9m ago•0 comments

The brain may be about to have its Ozempic moment

https://economist.com/science-and-technology/2026/08/11/the-brain-may-be-about-to-have-its-ozempi...
3•andsoitis•14m ago•0 comments

Ask HN: How should I progress in my hacking journey?

1•anonomity•14m ago•0 comments

Trystero

https://github.com/dmotz/trystero
2•tibbar•15m ago•0 comments

Ancient Engineering Marvel Was Built Without Rulers

https://www.404media.co/no-bosses-ancient-engineering-marvel-was-built-without-rulers-study-sugge...
1•Jimmc414•16m ago•0 comments

How to Migrate from Airtable to Obsidian

https://obsidian.md/help/import/airtable
1•skadamat•17m ago•0 comments

Ask HN: What is your biggest bottleneck when developing with agents

1•sakuraiben•19m ago•1 comments

Textdämmerung: On Arday, the EU, and How One Philosophizes with a Chatbot

https://critiqueanddigest.substack.com/p/textdammerung
2•crescit_eundo•20m ago•0 comments

Show HN: Openleetcode – local LeetCode runner where tests live in the repo

https://github.com/therepanic/openleetcode
2•therepanic•20m ago•0 comments

Microsoft to increase Windows OEM license pricing 7-10%

https://www.pcmag.com/news/buying-a-new-pc-a-windows-11-price-hike-could-soon-make-it-more-expensive
1•Rooster61•21m ago•1 comments

Anydoc: Word, PowerPoint, Excel, OpenDocument, RTF, ePub, CSV, PDF to Markdown

https://github.com/firecrawl/anydoc
3•nateb2022•22m ago•0 comments

If the American Dream Is Dead, No One Told the People Who Are Still Chasing It

https://www.robkhenderson.com/p/if-the-american-dream-is-dead-no
2•paulpauper•23m ago•0 comments

Gemini is Cooked, but GCP is Cooking

https://newsletter.semianalysis.com/p/gemini-is-cooked-but-gcp-is-cooking
2•isnotchicago•23m ago•0 comments

NVIDIA & partners to mobilize over $500B of third-party capital for AI buildout

https://nvidianews.nvidia.com/news/nvidia-partners-with-apollo-blackrock-blackstone-brookfield-go...
1•frozenseven•23m ago•0 comments

AI Found a Zoom Takeover Flaw in Fewer Than 20 Prompts

https://ai-updates.net/ai-found-zoom-takeover-flaw-20-prompts/
1•ashurandi•24m ago•0 comments

My Answers to "Prove You Are Worthy to Post About Diets"

https://www.exfatloss.com/p/my-answers-to-prove-you-are-worthy
2•paulpauper•24m ago•0 comments

How much will cybersecurity costs rise?

https://marginalrevolution.com/marginalrevolution/2026/08/how-much-will-cybersecurity-costs-rise....
2•paulpauper•24m ago•0 comments

Compression Is Prediction

https://ngrok.com/blog/compression-is-prediction
12•nikolay•25m ago•5 comments

OpenRouter is a example of the Application layer of AI

https://s-1.vercel.app/posts/why-openrouter-can-be-the-next-great/
1•Altaba•27m ago•0 comments

Next-Token Predictor Is An AI's Job, Not Its Species

https://www.astralcodexten.com/p/next-token-predictor-is-an-ais-job
2•optimalsolver•28m ago•0 comments