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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Adventures in Poetry Translation

https://rikverse2020.rikweb.org.uk/blog/adventures-in-poetry-translation/
1•rikroots•11m ago•0 comments

Show HN: Open-source proxy that keeps Claude's 5-minute cache alive forever

https://github.com/TonyStef/Grov
1•tonyystef•11m ago•0 comments

Amper – experimental JVM build tool

https://amper.org/0.9/
1•bartekpacia•11m ago•0 comments

Customer Feedback Tool

1•sm1100•11m ago•0 comments

Inherently Funny Word

https://en.wikipedia.org/wiki/Inherently_funny_word
1•cainxinth•13m ago•0 comments

Show HN: TapeHead – A CLI tool for stateful random access of file streams

https://github.com/emamoah/tapehead
1•emamoah•16m ago•0 comments

Repeated-sprint training in hypoxia: A review with 10 years of perspective [pdf]

https://www.fisiologiadelejercicio.com/wp-content/uploads/2025/10/Repeated-sprint-training-in-hyp...
1•wslh•17m ago•0 comments

Show HN: Create your own interactive visual customer support agent

https://www.chat-data.com/changelog/ui-based-response-launch
2•freesam•21m ago•0 comments

Zebra-Llama: Towards Efficient Hybrid Models

https://arxiv.org/abs/2505.17272
2•mirrir•24m ago•0 comments

The Deer Island Marvel: Wastewater treatment and engineering excellence

https://whattotelltherobot.com/p/the-deer-island-marvel
1•stefie10•25m ago•1 comments

Why Operational Metrics and Agent Analytics Driving Successful MCP Servers

https://glama.ai/blog/2025-12-06-the-operational-metrics-and-agent-analytics-driving-successful-m...
1•OmShree0709•28m ago•1 comments

Dex rethinks screen time for kids' device [video]

https://www.youtube.com/watch?v=Nz5O7PvyHcM
2•taro666•30m ago•0 comments

Cellular layers in the brain's memory center

https://keck.usc.edu/news/usc-study-reveals-hidden-cellular-layers-in-the-brains-memory-center/
3•gmays•31m ago•0 comments

Show HN: Multimodal Benchmarks

https://github.com/mixpeek/multimodal-benchmarks
2•Beefin•31m ago•0 comments

2025 Aggvent Calendar – Geometry Puzzles

https://andymath.com/2025aggventcalendar/
2•incognito124•31m ago•0 comments

PocketMage Is an E Ink PDA for the Modern Era

https://www.hackster.io/news/pocketmage-is-an-e-ink-pda-for-the-modern-era-3dac295619c0
4•todsacerdoti•35m ago•0 comments

Show HN: I built an open-source AI tool to analyze CSV locally in the browser

https://maxgfr.github.io/csv-ai-analyzer/
2•maxgfr•38m ago•0 comments

Hybrid ML and LLM Framework for Identifying Engaging, Breaking Content on Reddit

https://old.reddit.com/r/RedditEng/comments/1p6gwub/breaking_through_the_noise_a_hybrid_ml_and_llm/
2•nowflux•39m ago•0 comments

CATL Expects Oceanic Electric Ships in 3 Years

https://cleantechnica.com/2025/12/05/catl-expects-oceanic-electric-ships-in-3-years/
3•thelastgallon•39m ago•1 comments

Seven Architectural Decision Making Fallacies (and Ways Around Them)

https://ozimmer.ch/practices/2025/09/01/ADMFallacies.html
1•azhenley•42m ago•0 comments

The Case That A.I. Is Thinking

https://www.newyorker.com/newsletter/the-daily/is-ai-amazing-or-are-we-simple
1•jsomers•44m ago•1 comments

Printer tracking dots visible after holographic foiling of transparency print

https://xcancel.com/garnetstar28/status/1997048456532332931
1•Lammy•45m ago•0 comments

'It's like the lottery': AI boom has created parking chaos in SF neighborhood

https://www.sfchronicle.com/sf/article/mission-car-parking-san-francisco-21221645.php
1•mikhael•47m ago•0 comments

Use Python for Scripting

https://hypirion.com/musings/use-python-for-scripting
1•todsacerdoti•47m ago•0 comments

Titans and MIRAS: Helping AI have long-term memory

https://research.google/blog/titans-miras-helping-ai-have-long-term-memory/
2•bilsbie•50m ago•0 comments

Ask HN: Do you believe Netflix will be a good steward of Warner Bros?

2•dannyphantom•50m ago•3 comments

The general who refused to crush Tiananmen's protesters

https://www.economist.com/china/2025/12/04/the-general-who-refused-to-crush-tiananmens-protesters
32•marojejian•53m ago•8 comments

The Broken Job Search: Why Applying to Big Tech Is a Trap

https://webdev-sb.blogspot.com/2025/11/the-broken-job-search-why-applying-to.html
3•typesafeJ•1h ago•0 comments

Camera traps snap 3X more images of endangered Sumatran tigers than before

https://www.frontiersin.org/news/2025/12/04/camera-traps-endangered-sumatran-tiger
2•gmays•1h ago•0 comments

A Template-Driven Approach to Resource Management for AI Compute

https://www.ori.co/blog/a-template-driven-approach-to-ai-resource-management
1•edogrider•1h ago•0 comments