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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/

First impressions after getting back on social media

https://nandinfinitum.com/posts/social-media-first-impressions/
1•nanfinitum•48s ago•0 comments

Agent Shell – persistent AI dev boxes from shell host running since 2009

https://www.xshellz.com/
1•stfnon•2m ago•0 comments

CiaoTutor: Voice-based Italian tutor for B1 and beyond learners

https://ciaotutor.com/
1•alexmancini•2m ago•0 comments

Gemma 4 Technical Report

https://arxiv.org/abs/2607.02770
1•gmays•4m ago•0 comments

Uber in Advanced Talks to Buy Delivery Hero

https://www.bloomberg.com/news/articles/2026-07-14/uber-is-said-to-be-in-advanced-talks-on-delive...
1•aanet•5m ago•0 comments

Advice for a Young Investigator

https://pmc.ncbi.nlm.nih.gov/articles/PMC5198756/
1•kkoncevicius•5m ago•0 comments

Oklo, the Earth's two-billion- year-old only known natural nuclear reactor [pdf]

https://www.iaea.org/sites/default/files/publications/magazines/bulletin/bull59-2/5922627.pdf
2•thunderbong•5m ago•0 comments

What would a land value tax do?

https://taxpolicy.org.uk/2026/07/12/what-would-a-land-value-tax-actually-do/
2•AndrewDucker•6m ago•0 comments

Show HN: Bold – Catch when one user can read another user's data in live traffic

https://www.bedpage.com/
1•Sahith59•7m ago•0 comments

Cleaf – A small text editor for Linux with big ideas

https://github.com/Logic-gate/cleaf
1•mad_dev•9m ago•1 comments

A beginner's guide to Chekhov's short stories

https://clutteredpapers.substack.com/p/chekhov-stories
1•lermontov•9m ago•0 comments

Feedback Epistemic Equilibrium Law (Feel)

https://github.com/PHANTOM-z3/Feedback-Epistemic-Equilibrium-Law-FEEL-
1•AIsafety393•9m ago•0 comments

Yivi

https://yivi.app/en/
2•exceptione•10m ago•1 comments

Agentmetry, catch your AI coding agent reading –/.ssh and phoning home

https://github.com/blitzcrieg1/agentmetry
1•blitzcrieg1•11m ago•0 comments

Interactive Map of Every NYC Neighborhood

https://nycneighborhoods.app/
1•altilunium•11m ago•0 comments

DealDialog – normalized, matched alerts for multi-country govt tenders

https://dealdialog.com/demo
1•Northtide•12m ago•0 comments

Things a Single Cloud Benchmark Would Have Missed

https://webbynode.com/articles/three-things-single-cloud-benchmark-would-have-completely-missed
1•gsgreen•12m ago•0 comments

Microsoft starts testing cleaner Windows Search without ads

https://www.bleepingcomputer.com/news/microsoft/microsoft-starts-testing-cleaner-windows-search-w...
1•Brajeshwar•12m ago•1 comments

Show HN: A agentic nervous system for all DevOps tools

https://github.com/anway-dev/anway
1•rajvr•13m ago•0 comments

Perfect-Freehand

https://www.perfect-freehand.com/
1•colinprince•13m ago•0 comments

AI Jobs Wake Up Call

https://apnews.com/article/ai-must-act-now-job-displacement-783469467e0df1463df44518f33295ee
1•syed_qutub3•15m ago•1 comments

Keys, Essences and Performance

https://ebellani.github.io/blog/2026/on-keys-essences-and-performance/
2•b-man•16m ago•0 comments

Measuring Input Latency on Linux: X11 vs. Wayland, VRR, and DXVK

https://marco-nett.de/blog/measuring-input-latency-on-linux-x11-vs-wayland-vrr-dxvk/
9•hoechst•16m ago•1 comments

Do frontier models matter if most production AI ends up running on open models?

https://techcrunch.com/2026/07/14/the-real-ai-race-may-no-longer-be-at-the-frontier-open-models-h...
3•nlpnerd•18m ago•0 comments

AI Links: Index of deep links into popular agents

https://ailinks.swerdlow.dev
3•benswerd•19m ago•1 comments

Buffett drops Gates Foundation from his annual donations

https://www.cnn.com/2026/07/14/business/buffett-gates-foundation-donations
4•Tomte•20m ago•0 comments

Texas leads nation in proposed power plants for data centers

https://www.texastribune.org/2026/07/01/texas-data-center-power-plans-emissions/
3•measurablefunc•24m ago•0 comments

Show HN: Tag: Open-source NVMe cache for object storage

1•xena•24m ago•0 comments

Parisian Prisoners Offered Freedom If They Married Prostitutes Moved to Louisana

https://historycollection.com/parisian-prisoners-offered-freedom-agreed-marry-prostitutes-move-mi...
2•arealaccount•24m ago•0 comments

Banning AI in Law School: We've Seen This Before

https://hardcoresoftware.learningbyshipping.com/p/240-banning-ai-in-law-school-weve
1•bookofjoe•25m ago•0 comments