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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/

Standout Startups from YC's Demo Day, According to VCs

https://techcrunch.com/2026/06/18/the-11-standout-startups-from-ycs-demo-day-according-to-vcs/
1•simonpure•6m ago•0 comments

College students are swapping coding for healthcare: Goldman Sachs

https://finance.yahoo.com/economy/article/college-students-are-swapping-coding-for-healthcare-gol...
1•gbourne1•7m ago•0 comments

GitLab 19.1

https://docs.gitlab.com/releases/19/gitlab-19-1-released/
2•ilreb•7m ago•0 comments

Waymo Recalling 3,800+ Robotaxis over Risk of Entering Construction Zones

https://www.wsj.com/business/autos/waymo-recalling-more-than-3-800-robotaxis-over-risk-of-enterin...
2•1vuio0pswjnm7•8m ago•0 comments

HN Returning "Sorry."

1•christopher8827•8m ago•0 comments

Can LLMs change the hiring economics of legacy engineers?

https://exhaustedmind.substack.com/p/ask-hn-can-llms-change-the-hiring
1•Psychoterapist•10m ago•0 comments

Show HN: AA-Briefcase: a frontier knowledge work evaluation

https://artificialanalysis.ai/articles/aa-briefcase
7•declanjackson•15m ago•1 comments

The effect of worked examples on learning solution steps and knowledge transfer

https://www.tandfonline.com/doi/full/10.1080/01443410.2023.2273762
1•indigodaddy•19m ago•0 comments

Office workers of the world unite: it's time to revive the three-martini lunch

https://www.theguardian.com/commentisfree/2026/jun/18/three-martini-lunch
2•andsoitis•22m ago•0 comments

Haker Pra Free Fare

1•thaillan•23m ago•1 comments

Elon Musk's SpaceX plots $20B bond deal after record IPO

https://www.ft.com/content/8b73b4ce-3855-4b89-9110-3d892567f28a
2•JumpCrisscross•27m ago•0 comments

Ask HN: Any VPS / VPN with Dedicated IP Address in Cayman Islands?

1•JumpinJack_Cash•27m ago•0 comments

Update on Ocean Observatories Initiative

https://www.nsf.gov/news/update-ocean-observatories-initiative
8•andsoitis•31m ago•1 comments

Zhao's $2B Bet: Why Asia Needs Another Quant Shop

https://freemalta.com/news/digest/ambition/zhaos-2-billion-bet-why-asia-needs-another-quant-s
1•ilhaniremyuce•32m ago•0 comments

Data Science Weekly – Issue 656

https://datascienceweekly.substack.com/p/data-science-weekly-issue-656
1•sebg•33m ago•0 comments

Uniba Embodied Virtuality

https://uniba.jp/
1•bobbiechen•37m ago•0 comments

Chile turned to China for an undersea cable. The U.S. said no

https://restofworld.org/2026/chile-china-america-google-cable/
2•i7l•38m ago•0 comments

How the Peter Thiel-Linked Dialog Club Ranks Its Members

https://www.wired.com/story/how-peter-thiels-private-dialog-club-secretly-ranks-its-members/
1•mukmuk•39m ago•0 comments

NASA brought the monstrous F-1 "moon rocket" engine back to life (2013)

https://arstechnica.com/science/2013/04/how-nasa-brought-the-monstrous-f-1-moon-rocket-back-to-life/
3•Eridanus2•39m ago•0 comments

Selling My House with a Chatbot

https://www.nytimes.com/2026/05/28/technology/sell-house-with-ai-no-realtor.html
1•lispybanana•41m ago•0 comments

Newgrange

https://en.wikipedia.org/wiki/Newgrange
2•Amorymeltzer•41m ago•0 comments

Show HN: MCP tools in one server – pay-as-you-go, no subscription

https://smithery.ai/servers/scotia1973/api-hub2
1•scotty73•41m ago•0 comments

Show HN: Press and Hold

https://pressandhold.vercel.app/
1•leonagano•42m ago•0 comments

Ask HN: How much do you trust LLMs with your health questions?

2•thedreammachine•42m ago•1 comments

NASA picks Eric Schmidt's rocket company for Mars mission, sets up race w SpaceX

https://techcrunch.com/2026/06/17/nasa-picks-eric-schmidts-rocket-company-for-mars-mission-settin...
6•bookofjoe•44m ago•1 comments

Unifying Embodied World Modeling Through Language-Conditioned Video Gen

https://arxiv.org/abs/2606.17030
1•gmays•44m ago•0 comments

Get user requests directly on your website and have an agent build

https://amendor.site/
1•osaeld•47m ago•0 comments

Eve

https://vercel.com/blog/introducing-eve
1•gmays•49m ago•1 comments

FlipCTL – our GUI framework for embedded Linux systems

https://blog.flipper.net/flipctl-our-gui-framework-for-embedded-linux-systems/
1•avrong•51m ago•1 comments

Brainux: Linux for "Sharp Brain" electronic dictionaries (Japanese)

https://brainux.org/about/
1•tslmy•53m ago•0 comments