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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/

LLM Observatory

https://llm-observatory.org/index.html
1•myth_drannon•2m ago•0 comments

Show HN: Henry Perigal's Visual Proof of the Pythagoras Theorem

https://do-say-go.github.io/insights/others/interactive_perigals_pythagorean.html
2•keepamovin•8m ago•0 comments

Tell HN: Happy Thanksgiving – Grateful

3•emreb•9m ago•1 comments

Show HN: Auto-Unpublish NPM Packages Published Outside CI

https://github.com/telophasehq/tangent-plugins/tree/main/detections/sha1hulud/npmcicorrelation
3•ethanblackburn•10m ago•0 comments

Show HN: SyncKit – Offline-first sync engine (Rust/WASM and TypeScript)

https://github.com/Dancode-188/synckit
5•danbitengo•16m ago•0 comments

Toll in Hong Kong fire rises to 65, police cite 'grossly negligent' firm

https://www.reuters.com/world/china/hong-kong-tower-fire-toll-rises-44-police-arrest-three-2025-1...
3•Inocez•16m ago•0 comments

Use Minimal APIs over Controllers for new apps

https://www.roundthecode.com/dotnet-blog/why-you-must-use-minimal-apis-over-controllers-new-apps
2•PretzelFisch•16m ago•0 comments

Does anyone run ads successfully?

2•XCSme•16m ago•2 comments

GNU C Library Sees Up to 12.9x Improvement with New Generic FMA Implementation

https://www.phoronix.com/news/Glibc-New-Generic-FMA
1•Bender•18m ago•0 comments

I was left hospitalized and coughing up blood after using a glass straw

https://www.dailymail.co.uk/health/article-15325379/glass-straws-accident-TikTok-blood-stomach.html
3•Bender•19m ago•0 comments

Show HN: Runprompt – run .prompt files from the command line

https://github.com/chr15m/runprompt
3•chr15m•21m ago•0 comments

Show HN: Alt – A local AI lecture/meeting notetaker

https://www.altalt.io/en
3•predict-woo•24m ago•1 comments

Show HN: SceenYou.art-Your Personal AI Visual Studio

https://sceneyou.art/
2•zy5a59•25m ago•0 comments

Neuracore raises $3M to power next-gen robots and open robotics research

https://earlybird.com/perspectives/backing-neuracore-reinventing-data-infrastructure-for-robotics
2•felixneuraco•25m ago•0 comments

Equal things that don't look equal

https://www.johndcook.com/blog/2025/11/27/hyperbolic-metric-formulas/
3•ibobev•25m ago•0 comments

Launch: Rivellium – AI-powered multi-asset investing with real SMB cashflow

2•rivellium•25m ago•1 comments

Four-inch worm hatches in woman's forehead, wriggles to her eyelid

https://arstechnica.com/health/2025/11/doctors-pull-4-inch-worm-out-of-womans-eyelid-after-monthl...
4•Bender•26m ago•0 comments

AI Just Took My Product Photographer's Job

https://theautomatedoperator.substack.com/p/ai-just-took-my-product-photographers
4•idopmstuff•30m ago•0 comments

Haskell Jupyter kernels (IHaskell, xeus-Haskell) comparison

https://www.datahaskell.org/blog/2025/11/25/a-tale-of-two-kernels.html
2•yehoshuapw•34m ago•0 comments

Constraint-Engineered Development

https://rootcx.com/blog/constraint-engineered-development
2•seyz•36m ago•0 comments

Article on Medium

https://medium.com/@benoitlebison/what-would-a-world-with-legal-therapeutic-psilocybin-look-like-...
2•magictruffle•38m ago•0 comments

Crypto investors face tax crackdown as 70% non-compliant

https://www.thepost.co.nz/business/360897298/crypto-investors-face-tax-crackdown-70-non-compliant
27•gochuks•38m ago•24 comments

OpenAI confirms major breach, exposing user's names, email addresses, and more

https://www.windowscentral.com/artificial-intelligence/openai-chatgpt/openai-confirms-major-data-...
4•choult•39m ago•0 comments

Show HN: Omnom v0.8.0 with Fediverse feed integration

https://github.com/asciimoo/omnom/releases/tag/v0.8.0
5•asciimoo•41m ago•0 comments

A terminal emulator that runs in your terminal. Powered by Turbo Vision

https://github.com/magiblot/tvterm
2•mariuz•44m ago•0 comments

Got burned by an Apple ICLR paper – it was withdrawn after my Public Comment

https://twitter.com/diyerxx/status/1994042370376032701
4•diyer22•44m ago•2 comments

Boarding School Syndrome

https://www.theguardian.com/books/2015/jun/08/boarding-school-syndrome-joy-schaverien-review
3•niemandhier•44m ago•1 comments

Free Flux 2 to Try

https://flux-2-ai.com
2•jeyzolo•45m ago•1 comments

Ask HN: Do AIs reply with numerous em dashes to save money somehow?

3•amichail•47m ago•1 comments

What Great Means to Us

https://twinlabs.notion.site/great
2•bkolobara•49m ago•0 comments