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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/

Story Lab

https://story-lab.ai/
1•Aftermidn8•1m ago•0 comments

China plans to spend $295B on AI buildout

https://www.bloomberg.com/news/articles/2026-06-09/china-prepares-295-billion-plan-to-fund-nation...
1•loandbehold•1m ago•0 comments

Plane Launch Week Gallery

https://plane.so/launch-week/q2-2026
1•bbor•2m ago•1 comments

Nearly Everyone, Everywhere, Veers Left When Walking

https://www.nytimes.com/2026/06/10/science/humans-walking-veer-left-counterclockwise.html
1•donohoe•4m ago•0 comments

The Device Paradigm [pdf]

https://web.cs.ucdavis.edu/~rogaway/classes/188/spring04/projects/5.pdf
1•burnto•4m ago•0 comments

Fable 5 creates full Swiss lever watch movement in Three.js

https://twitter.com/quanghuynt14/status/2064509430650065278
2•mhb•4m ago•0 comments

Nuts – pip/NPM for Java with first-class workspaces and JDK provisioning (9y+)

https://github.com/thevpc/nuts
1•thevpc•5m ago•0 comments

AI-review: reviewing AI code before it lands

https://www.jackfranklin.co.uk/blog/ai-review-plan/
1•mooreds•5m ago•0 comments

Whole Earth Garden

https://wholegarden.falso.net/
1•gdss•6m ago•0 comments

How to enter side doors: guide to jobs, cold emails, and making yourself legible

https://velvetnoise.substack.com/p/how-to-enter-side-doors
1•nowflux•6m ago•0 comments

Who runs the ransomware group 'The Gentlemen?'

https://krebsonsecurity.com/2026/06/who-runs-the-ransomware-group-the-gentlemen/
2•krebsonsecurity•7m ago•0 comments

T9 Texting Is Back on iPhone

https://apps.apple.com/us/app/t9-keyboard-text-like-its-04/id6765738931
1•ItsMeDavidV•7m ago•0 comments

Ongoing attempt to standardise a DOM Templating API in browsers

https://github.com/justinfagnani/dom-templating-api-proposal
1•llcooliovice•10m ago•0 comments

Show HN: Kctx – A read-only Kubernetes context engine for SREs and AI Agents

https://github.com/lucasepe/kctx
2•lucasepe•12m ago•0 comments

Anthropic's Self Governance Is an Act of Social Violence

https://cezarbabin.com/notes/anthropic-self-governance-is-an-act-of-social-violence.html
1•nibab•13m ago•1 comments

Google Liable for Hallucinations (In Germany)

https://garymarcus.substack.com/p/breaking-google-liable-for-hallucinations
1•PaulDavisThe1st•13m ago•1 comments

The maths behind a leopards spots

https://www.bbcearth.com/news/the-maths-behind-a-leopards-spots
2•marysminefnuf•16m ago•0 comments

Jumping spiders inspire ultra-efficient 3D camera

https://news.northwestern.edu/stories/2026/06/jumping-spiders-inspire-ultra-efficient-3d-camera
1•gmays•18m ago•0 comments

US stock market to stop shrinking for first time in 23 years

https://www.ft.com/content/f7dae4e1-d650-45ab-ac97-043c7a965d24
3•JumpCrisscross•19m ago•0 comments

Ask HN: What are your thoughts on your critical thinking abilities and AI?

2•ciwolex•20m ago•5 comments

Piano Learning App focused on Sight-reading

http://virtuoso.host.eco.br/app/
2•ltouro•20m ago•2 comments

Show HN: LocksBet – a price comparison tool for prediction markets

https://locksbet.com
1•at-w•21m ago•0 comments

What Is It Like to Be a Bat? [pdf]

https://www.sas.upenn.edu/~cavitch/pdf-library/Nagel_Bat.pdf
3•shadow28•22m ago•0 comments

Apple Announces Maps Feature That Could Bring CarPlay to Tesla

https://www.notateslaapp.com/news/4278/could-this-new-apple-feature-finally-bring-carplay-to-tesla
2•dabinat•23m ago•0 comments

The Music Understanding framework [video]

https://developer.apple.com/videos/play/wwdc2026/253/
2•gok•23m ago•0 comments

Show HN: CtxGov – a local claim firewall for AI memory claims

https://ctxgov.github.io/ctxgov/try-in-5-minutes.html
1•LuxBennu•24m ago•0 comments

Beyond Enumerable: For Want of Better Windows

https://baweaver.com/writing/2026/05/31/beyond-enumerable-for-want-of-better-windows/
1•kurinikku•24m ago•0 comments

Breaking the Ice: Analyzing Cold Start Latency in vLLM

https://arxiv.org/abs/2606.07362
2•matt_d•26m ago•0 comments

They Tried to Catch a Predator. They Trapped Themselves Instead

https://www.nytimes.com/2026/06/10/technology/predator-catcher-vitaly-mistake.html
3•_tk_•28m ago•0 comments

Sharper context. Fewer tokens. Open-source middleware for Claude Code

https://github.com/cytostack/openwolf
1•momentmaker•29m ago•0 comments