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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Microsoft keeps reinstalling Copilot, so I found a way to rip it out for good

https://www.howtogeek.com/how-to-rip-out-copilot-from-windows-11/
2•rolph•3m ago•0 comments

Miniatur Wunderland

https://en.wikipedia.org/wiki/Miniatur_Wunderland
1•bschne•4m ago•0 comments

Reversibility

https://blog.zacbentley.com/post/on-reversibility/
1•zbentley•4m ago•0 comments

Simulating Cislunar Space: Why Experts Want to Construct a Digital Moon

https://aerospace.org/article/simulating-cislunar-space-why-experts-want-construct-digital-moon
1•mooreds•5m ago•0 comments

Show HN: FormTS – Define forms with TypeScript instead of drag-and-drop

https://formts.com/editor
1•dkrychowski•6m ago•1 comments

Wind power slashed 4.6B euros off electricity bills in Spain last year

https://www.surinenglish.com/spain/wind-power-slashes-billion-euros-off-electricity-bills-2025121...
2•mooreds•6m ago•0 comments

Trump administration halts immigrant visa processing from 75 countries

https://www.theguardian.com/us-news/2026/jan/14/immigrant-visas-suspended-trump
4•ta752368•10m ago•1 comments

Use Agents or Be Left Behind? A Personal Guide to Automating Your Own Work

https://timdettmers.com/2026/01/13/use-agents-or-be-left-behind/
1•mathis-l•11m ago•0 comments

Claude Cowork Exfiltrates Files

https://www.promptarmor.com/resources/claude-cowork-exfiltrates-files
2•takira•12m ago•1 comments

Epic sues multiple health data providers, alleging fraudlent sale of health data

https://www.healthcareitnews.com/news/epic-and-health-systems-sue-health-gorilla-and-data-companies
2•jkingsman•12m ago•1 comments

The End of the Orbital Index

https://orbitalindex.com/archive/2026-01-07-Issue-350/
1•mooreds•12m ago•0 comments

How Trump Is Preparing for War on China [video]

https://www.youtube.com/watch?v=z6pdRYGuwCw
2•Darryl191•13m ago•0 comments

Show HN: I made a search engine for prediction markets

https://upms-map.vercel.app/
1•Nortca•13m ago•0 comments

SpaceX will attempt to reach Mars by the end of 2026

https://www.msn.com/en-ie/money/other/elon-musk-surprises-everyone-spacex-will-attempt-to-reach-m...
2•majkinetor•14m ago•1 comments

Chatperone – LLM chatbots with full parental controls

https://chatperone.com
1•Multicomp•17m ago•1 comments

Scientists sequence a woolly rhino genome from a 14,400-year-old wolf's stomach

https://arstechnica.com/science/2026/01/scientists-sequence-a-woolly-rhino-genome-from-a-14400-ye...
1•rbanffy•17m ago•0 comments

Can you read 900 words per minute? Try it

https://twitter.com/ultralinx/status/2011434505253650868
1•vitaelabitur•18m ago•0 comments

Show HN: Extract Structured Data from Any Web Page

https://page-replica.com/structured/live-demo
1•html5ninja•21m ago•0 comments

The Earth Calendar: A Human-Readable Interface for Unix Epoch Time

https://hyperlinker.org/tec/dt/
2•HyperLinker•21m ago•1 comments

Show HN: Harmony – AI notetaker for Discord

https://harmonynotetaker.ai/
5•SeanDorje•21m ago•1 comments

Texas Police Invested Millions in Shadowy Phone-Tracking Software

https://www.texasobserver.org/texas-police-invest-tangles-sheriff-surveillance/
3•lnguyen•22m ago•0 comments

We're all context engineers now

https://www.gitkraken.com/blog/the-context-engineering-framework-3-shifts-for-ai-powered-dev-teams
1•Jadiiee•22m ago•0 comments

Show HN: Real-time video to high-resolution ASCII using WebGPU (major updates)

https://twitter.com/luthiraabeykoon/status/2011126322223804694
2•luthiraabeykoon•22m ago•0 comments

Sending Data over Offline Finding Networks

https://cc-sw.com/find-my-and-find-hub-network-research/
1•findmysanity•24m ago•0 comments

We compared a $2B platform's AI-readiness to Google's new UCP standard

https://medium.com/@clio.connects/the-great-optimization-divide-why-seo-is-no-longer-enough-in-th...
1•gotthatdata•24m ago•1 comments

Understanding ZFS Scrubs and Data Integrity

https://klarasystems.com/articles/understanding-zfs-scrubs-and-data-integrity/
1•zdw•24m ago•0 comments

Show HN: Rethinking the user interface of AI, open source<3

https://github.com/ThinkEx-OSS/thinkex
1•urjit•24m ago•0 comments

My Coding Philosophy (2026)

https://www.arguingwithalgorithms.com/posts/my-coding-philosophy.html
1•tomyedwab•25m ago•0 comments

Digital Alchemy: Turning Slop into Gold with Ralph and Valknut

https://sibylline.dev/articles/2026-01-14-digital-alchemy-turning-slop-into-gold/
1•CuriouslyC•27m ago•0 comments

Show HN: Controlling macOS with an Apple TV Remote

https://github.com/lauschue/Remotastic
1•lau123•28m ago•0 comments