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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/

Anthropic's proposed AI safety bill only kicks in if 50 deaths or $1B in damages

https://www.tomshardware.com/tech-industry/artificial-intelligence/anthropics-proposed-ai-safety-...
1•f-serif•52s ago•0 comments

Show HN: Distance Fields Visualization

https://visualrambling.space/distance-fields/
1•damarberlari•1m ago•0 comments

Coding Agents Build For The Grader They Imagine, Not The User

https://joinhandshake.com/research/ai/deepswe-reward-hacking/
1•optimalsolver•2m ago•0 comments

SpaceX Starshield

https://www.spacex.com/starshield
1•asjkff•3m ago•0 comments

GDP: The Only Number That Matters

https://www.vox.com/policy/471950/gross-domestic-product-economics-metrics-growth
1•barry-cotter•3m ago•0 comments

US Rep proposes bill to give video game buyers "ownership," not "a license"

https://arstechnica.com/gaming/2026/10/us-rep-proposes-bill-to-give-video-game-buyers-ownership-n...
3•pseudolus•6m ago•0 comments

Pactern Language: Delegate the code. Keep the contract

https://andrewarrow.dev/pactern/
1•andrewfromx•7m ago•0 comments

Category theory is hilariously recursive

https://t3.at/blog/2025-10-12-categories/
1•andsoitis•7m ago•0 comments

Can Science Save Meetings?

https://knowablemagazine.org/content/article/society/2026/can-science-save-meetings
2•pseudolus•7m ago•0 comments

When the KV Cache Is Slower Than the GPU: Scaling Remote KV Tiers

https://arxiv.org/abs/2610.21500
1•wondersky•7m ago•0 comments

Show HN: DocuMemory – Persistent memory and context for AI coding tools

https://www.documemory.dev/
1•veryslowcode•8m ago•0 comments

Petal, the first petabit transoceanic fiber cable

https://www.livescience.com/technology/communications/new-4-300-mile-long-internet-cable-will-shu...
2•geox•10m ago•0 comments

GhostAction hid a credential stealer in a fake font file in 94 GitHub repos

https://opensourcemalware.com/blog/ghostaction-copycats-polinrider-by-hiding-a-stealer-in-a-fake-...
3•wondersky•11m ago•0 comments

Show HN: An open-source curation of most useful ChatGPT Plugins

https://github.com/Asdivyansh/Awesome-ChatGPT-Plugins
1•AsDivyansh•11m ago•0 comments

Software is recursive and AI is the base case

https://t3.at/blog/2026-10-06-ai-base-case/
1•andsoitis•13m ago•0 comments

Chinese Automakers Are Building American-Style Cars–Just Not for Americans

https://www.wsj.com/business/autos/chinese-automakers-are-building-american-style-carsjust-not-fo...
1•bookofjoe•14m ago•1 comments

Tesla 'Cannot Guarantee' Roadster Reservation Holders Will Ever Get a Car

https://www.thedrive.com/news/tesla-cannot-guarantee-roadster-reservation-holders-will-ever-get-a...
4•healsdata•14m ago•1 comments

The Model Is the Company

https://alexwang.ai/posts/the-model-is-the-company/
1•andsoitis•18m ago•0 comments

The Cory Arcangel Hack

http://doi.org/10.7551/mitpress/15779.001.0001
2•jruohonen•19m ago•0 comments

NPCs can talk back now

https://www.reddit.com/r/ChatGPT/comments/1x93coy/npcs_can_talk_back_now_from_universal_modder_on_x/
3•doppp•21m ago•0 comments

Building a multiplayer terrain sandbox that stores 8x less data than Minecraft

https://moai.studio/blog/posts/veld-heightfield-sparse-edits.html
1•ionwake•23m ago•0 comments

Theranos-Style Fraud Has Become the Norm

https://www.theatlantic.com/ideas/2026/10/theranos-trump-nathan-fielder/689001/
2•fortran77•25m ago•0 comments

Okl – hold your agent to rules proven by checks and gated at push

https://github.com/emeraldleaf/okl
1•emeraldleaf•26m ago•0 comments

Founder Profiles

https://www.founderprofiles.ai/
2•simonpure•30m ago•0 comments

I spent three weeks trying to bridge Reticulum onto HF [video]

https://www.youtube.com/watch?v=5vbl5FL-nsI
1•Bluestein•30m ago•0 comments

The best in the world is not a global competition

https://herbertlui.net/the-best-in-the-world-is-not-a-global-competition/
1•herbertl•35m ago•0 comments

In 23 of 24 categories, AI answer engines recommend one brand in every query

https://noniner.io/report/state-of-ai-brand-visibility-2026
2•fredxhansson•41m ago•0 comments

Show HN:MockForge – Lightweight, zero-dependency Python API and Webhook

https://github.com/alessio1999xx-debug/pyforge-task-Mockforge
4•AlessioDev•42m ago•0 comments

RepRapMicron

https://github.com/VikOlliver/RepRapMicron/wiki
31•RobotToaster•42m ago•4 comments

Faster, Better, Stronger is not a Strategy

https://serce.me/posts/2026-10-16-faster-better-stronger-is-not-a-strategy
3•SerCe•44m ago•0 comments