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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/

Data-Only Attacks Are Easier Than You Think

https://www.usenix.org/publications/loginonline/data-only-attacks-are-easier-you-think
1•segfaultbuserr•4m ago•0 comments

A Machine Beat Me at Chess. I'm Still Rooting for AI

https://www.thenextmove.org/p/a-machine-beat-me-at-chess-im-still
1•akbarnama•7m ago•0 comments

Loment: A self-hosted systems language with multi-syntax front ends

https://github.com/FujoJTOP/loment
1•FujoLoment•9m ago•1 comments

Porting Bhyve to Rust

https://github.com/TritonDataCenter/rshyve
1•nwilkens•14m ago•1 comments

Snorkel AI triples valuation to $3.5B as demand for AI training data booms

https://techcrunch.com/2026/09/22/snorkel-ai-triples-valuation-to-3-5b-as-demand-for-ai-training-...
1•nlpnerd•15m ago•1 comments

Anatomy of a (Postgres) Search Engine

https://planetscale.com/blog/anatomy-of-a-postgres-search-engine
1•ksec•20m ago•0 comments

Specs cut defects in AI-generated code from 148 to 23 across five models

https://arxiv.org/abs/2609.23270
1•sandeepdhuri•21m ago•0 comments

President Lula Dataset

https://huggingface.co/datasets/geoffchan/lula-footage/viewer/default/train
1•rodrigueslotu•21m ago•0 comments

RGPU – Use a remote Nvidia GPU from PyTorch on a machine that has none

https://rgpu.dev
1•boxstream•27m ago•0 comments

Americans Are About to Lose Access to Prescriptions from Canada

https://www.wsj.com/health/healthcare/us-customs-prescription-drugs-canada-71978a47
1•baran•27m ago•0 comments

Critical Period in Brain Development

https://www.simplypsychology.org/critical-period.html
1•kamaraju•27m ago•0 comments

HarmBlock+ Safest Smartphone: Please Rotate Responsibly

https://paul.reviews/harmblock-worlds-safest-smartphone-please-rotate-responsibly/
1•pseudohadamard•29m ago•0 comments

Sadness and Suicidal Behavior Among Teenagers Is Declining, CDC Finds

https://www.nytimes.com/2026/09/21/science/teen-sadness-depression.html
1•lxm•36m ago•0 comments

Agent-browser equivalent for desktop and mobile apps

https://agent-device.dev
1•novoreorx•43m ago•0 comments

Emergent Collusion in Long-Horizon LLM Agent Interaction

https://arxiv.org/abs/2609.24967
1•sbulaev•46m ago•0 comments

Show HN: SubRead: line up an audiobook with its eBook, in the browser

https://subread.space
1•equwal•51m ago•0 comments

Ask HN: Is anyone charging extra their customers for credit card payments?

1•thomasjeff1•57m ago•2 comments

Show HN: Sbm: plain-text bookmarks synced across terminal, browser, Android

https://sbmsync.com
2•equwal•59m ago•0 comments

Transit rewards (Waymo pays you to take the train)

https://waymo.com/blog/2026/09/transit-rewards/
5•raybb•1h ago•0 comments

AgeKey – Privacy First Age Verification

https://agekey.org/how-age-signals-work
1•pickledish•1h ago•0 comments

How to Create Your Own Personal AI Benchmark

https://every.to/also-true-for-humans/how-to-create-your-own-personal-ai-benchmark
2•Garbage•1h ago•0 comments

Real-time dubbing of whatever your iPhone is playing

https://testflight.apple.com/join/dQCtQSf1
3•CROON_tv•1h ago•3 comments

Measuring behavioral signals of LLM through psychometric profiling

https://arxiv.org/abs/2609.22934
1•anigbrowl•1h ago•0 comments

Ella Langley's Choosin' Texas now longest-running number one in US chart history

https://www.bbc.com/news/articles/cwyvz0yvqre8o
2•1659447091•1h ago•0 comments

Joyas Voladoras (2012)

https://theamericanscholar.org/joyas-volardores/
1•vismit2000•1h ago•0 comments

Don't Trust. Verify. Offline, Sub-Millisecond Agent Verification with ANS

https://www.godaddy.com/resources/news/dont-trust-verify-offline-sub-millisecond-agent-verificati...
2•tmuhlestein•1h ago•0 comments

In 2025, 49 percent of adults under age 30 lived with a parent [pdf]

https://www.federalreserve.gov/publications/files/2025-report-economic-well-being-us-households-2...
7•gscott•1h ago•2 comments

Show HN: Making agent decisions better and traceable

1•aperi•1h ago•0 comments

The Business of Building God

https://www.strangeloopcanon.com/p/the-business-of-building-god
3•gmays•1h ago•0 comments

US criticises Australia's proposed algorithm opt-out laws as 'censorship'

https://www.bbc.com/news/articles/cqj3dgy8x3vro
61•1659447091•1h ago•38 comments