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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/

Mullvad VPN – Privacy is for the people

https://mullvad.net/en
1•doener•4m ago•0 comments

Show HN: Infinite Shaders

https://shaderfrog.com/infinite
1•andrewray•6m ago•0 comments

Show HN: Omnistew - 3D multiplayer RTS inspired by Risk, playable in a browser

https://omnistew.io/
1•omnistew•7m ago•0 comments

US floated idea of Ukraine swapping land for NATO membership, Zelensky says

https://www.cnn.com/2026/11/14/europe/us-ukraine-zelensky-nato-intl
4•MilnerRoute•13m ago•0 comments

EnvOpt: Automated Optimization for Agent Environments

https://bespokelabs.ai/blog/envopt
1•matt_d•15m ago•0 comments

Mechazilla Catches Starship

https://twitter.com/SpaceX/status/2121715216597827756
2•pretext•16m ago•0 comments

Show HN: RCEs. Can you pop all 3 boxes? (PHP2Shell / Node2Shell / Ruby2Shell)

https://breakinifyoucan.com/
1•elenchist•16m ago•0 comments

InstantSlate – A native macOS/iOS Markdown editor

https://apps.apple.com/us/app/instantslate/id6828666766
1•seln•19m ago•1 comments

Making a font for the Jamaican flag alphabet

https://digitalseams.com/blog/making-a-font-for-the-jamaican-flag-alphabet
1•bobbiechen•20m ago•0 comments

Show HN: Paintpot – Kid-friendly MSPaint clone for Linux

https://github.com/marktbaldridge/paintpot/
1•deposittag•21m ago•0 comments

Scaling Laws in Practice: MuP, WSD and Muon Explained – DeepSeek Did Use IT [video]

https://www.youtube.com/watch?v=BwJZXBR4k6I
1•ryansakhala•23m ago•0 comments

Atari 400 original Back to the Future time machine

https://podcasts.apple.com/us/podcast/the-atari-400-conspiracy-did-a-child-hacker/id1668145478?i=...
1•washdry•23m ago•1 comments

Show HN: Enzo – Dictation, meeting diarization, and recall for Mac, on-device

https://tryenzo.ai
1•selcam•24m ago•1 comments

Coffee consumption changes gut microbiota and physiology

https://www.sciencedirect.com/science/article/pii/S3051172026000149?via%3Dihub
2•marojejian•25m ago•2 comments

SpaceX catches part of Starship rocket on its return to Earth

https://www.bbc.com/news/live/cq0k683l3dz3t
2•vitaut•28m ago•1 comments

A 3D office where real Claude Code sessions work as employees

https://github.com/brstic/orchestrator
2•bstefanovic•31m ago•0 comments

Johnson says 'we don't need any investigation' on FAA ground stop

https://thehill.com/policy/transportation/6220851-mike-johnson-faa-ground-stop/
3•Betelbuddy•31m ago•3 comments

A repo of information for Zoom R8 firmware development

https://github.com/aturley/zoom-r8-hardware-and-firmware
1•aturley•36m ago•1 comments

Bitcoin Just Crashed Toward $64,000. History Says the Worst May Not Be Over

https://247wallst.com/investing/cryptocurrency/2026/11/14/bitcoin-just-crashed-toward-66000-histo...
3•ivewonyoung•36m ago•0 comments

Ankr froze ankrETH and won't say for how long

https://jw.hn/ankreth-frozen
1•jwpapi•36m ago•0 comments

How to Turn a Philanderer into a Father

https://asteriskmag.com/issues/16/how-to-turn-a-philanderer-into-a-father
2•Curiositry•37m ago•0 comments

Ask HN: Building Lovable for hardware, any suggestions and needs?

1•EricZ0115•39m ago•0 comments

Show HN: Domino Rally – design in 2D, watch in 3D

https://www.orgiggly.com/dominoes
1•orgiggly-dave•39m ago•0 comments

VTech See-a-sound Phonics reverse engineering

https://forum.vcfed.org/index.php?threads/vtech-see-a-sound-phonics-reverse-engineering.1259752/
1•andrewstuart•40m ago•0 comments

An Index Scan Is Only Half the Story

https://richyen.com/postgres/2026/11/09/index_scan_scattered_heap.html
2•plaur782•41m ago•0 comments

Competition in Generative AI: Evidence from Consumer Demand

https://www.nber.org/papers/w35953
1•marojejian•41m ago•1 comments

Show HN: Deterministic prompt injection detector using formal logic

https://nischoy.ai/
1•nischoy•42m ago•0 comments

Ultra refined ESLint shareable config

https://www.npmjs.com/package/eslint-config-ultra-refined
1•bricss•42m ago•0 comments

See and revoke what your AI coding agents can access

https://github.com/dirmedmr-alt/ai-access-auditor
1•dirmed•42m ago•0 comments

A new UMAP release brings major performance, quality, and scaling improvements

https://umap-learn.readthedocs.io/en/latest/whats_new_0_6.html
2•lmcinnes•44m ago•0 comments