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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 Lenovo Chromebook Plus

https://taoofmac.com/space/reviews/2026/10/04/1800
1•rcarmo•43s ago•0 comments

Ask HN: Mainstream media overplaying the threat of AI, or industry underplaying?

1•AbstractH24•2m ago•0 comments

AI Backers Sound the Alarm About Safety

https://www.bloomberg.com/news/newsletters/2026-10-04/ai-backers-sound-the-alarm-about-safety
1•ent101•3m ago•0 comments

AI doesn't need 'superintelligence' or evil intent to start a nuclear war

https://thebulletin.org/2026/10/ai-doesnt-need-superintelligence-or-evil-intent-to-start-a-nuclea...
1•bookofjoe•5m ago•0 comments

Show HN: Every click on this page draws a new Maurer rose

https://counter.maricakes.de/
1•jantuss•7m ago•0 comments

How Kyiv cracked Russia’s kill zone and got its tanks back in the fight

https://www.telegraph.co.uk/world-news/2026/10/03/how-ukraine-cracked-russias-kill-zone/
1•cisc•8m ago•0 comments

Show HN: NESH – A from-scratch UEFI shell with BASIC scripting

https://nesh.nicfio.it/
1•nicfio•16m ago•0 comments

Proposed Solution to Global Warming (2006)

https://qntm.org/global
2•andsoitis•18m ago•1 comments

Typst 0.15 Contains Multitudes

https://typst.app/blog/2026/typst-0.15/
3•birdculture•18m ago•0 comments

Claude Code Found My Pirc and King's Indian Mistakes

https://quickchat.ai/post/claude-code-stockfish-chess-opening-mistakes
1•piotrgrudzien•18m ago•0 comments

Show HN: Runescape but its a parody of SF

https://fogscape.vercel.app/
1•pbmango•20m ago•0 comments

Time Travel in Braid (2015)

https://qntm.org/braid
1•Ariarule•26m ago•0 comments

New recession odds and economic metric website

https://cyclewatch.org/
2•Macrolens•28m ago•0 comments

Donate AI Tokens for Open Source Projects

https://moochy.dev
2•sanix-darker•30m ago•1 comments

Ideogram 4.5: The most precise edit model

https://ideogram.ai/models/4.5/
1•gmays•31m ago•0 comments

Skyfall – open-source WebGPU aircombat game that runs in your browser

https://github.com/a7ul/skyfall
3•atulfiled•31m ago•0 comments

Ghost Debt - How influence outlives you, and the debt it leaves behind

https://medium.com/@aggelosbellos/ghost-debt-43437f792256
1•bellangelo•33m ago•0 comments

Against Personal Agents Theory of Everything Why the Future of Work Is a Factory

https://www.gettheleverage.com/p/against-the-personal-agents-theory
1•rmason•33m ago•0 comments

NDS National Design Studio

https://en.wikipedia.org/wiki/National_Design_Studio
1•sans_souse•34m ago•0 comments

Gen Z is betting on sports. Experts warn of the risks

https://www.cnbc.com/2026/10/04/gen-z-sports-betting-financial-and-mental-health-risks.html
2•pseudolus•35m ago•0 comments

Site-Blocking Will Not Defend IP, No Matter the Bill's Name

https://www.eff.org/deeplinks/2026/10/site-blocking-will-not-defend-ip-no-matter-bills-name
3•droidjj•36m ago•0 comments

Ultrise

https://www.ultrise.com
1•abderrazzakecha•38m ago•0 comments

Florida woman used Claude as a diary, then Anthropic reported an entry to police

https://www.techspot.com/news/114091-florida-woman-used-claude-diary-anthropic-reported-shoot.html
1•v9v•39m ago•0 comments

JavaScript Demos – Practical browser-based JavaScript examples, no frameworks

https://brysonbw.github.io/js-demos/#/
1•Brysonbw•44m ago•1 comments

Show HN: DoubtBench – does Jev know when humans disagree?

https://github.com/deeplearningguy/doubtbench
1•deepbuilder•44m ago•0 comments

What Is HLS Streaming? HTTP Live Streaming Explained

https://www.red5.net/blog/what-is-hls-streaming/
2•mondainx•54m ago•0 comments

Show HN: Severance-inspired terminal that prints task tickets

https://highlatencylife.com/notes/task-printer-machine-out-of-severance/
1•strizzo•54m ago•0 comments

Ask HN: What happens when AI writes a Bible ver 2.0, geared toward its interest?

3•netfortius•58m ago•4 comments

Your bookmarks are a mess. Fix them

https://chromewebstore.google.com/detail/kosh-bookmark-manager/meldjdfnfgefeoegccphimkmgmeamcce
2•havu12•59m ago•0 comments

New York Times Saved $45M with Tax Break It Faults Meta for Using

https://freebeacon.substack.com/p/new-york-times-co-saved-45-million
5•CGMthrowaway•1h ago•1 comments