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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Epic sues over alleged scheme to sell medical data to lawyers

https://www.reuters.com/legal/government/epic-systems-sues-over-alleged-scheme-sell-medical-data-...
1•primitivesuave•1m ago•0 comments

How does Golang know time.Now?

https://tpaschalis.me/golang-time-now/
1•fanf2•1m ago•0 comments

Bevy 0.18

https://bevy.org/news/bevy-0-18/
1•_han•1m ago•0 comments

StudentRisk AI – Predicting student dropout and wellbeing using AI and analytics

https://studentrisk.admnwizard.com/dashboard
1•sureshwin•3m ago•1 comments

Show HN: DeepFace now supports DB-backed vector search for face recognition

https://sefiks.com/2026/01/01/introducing-brand-new-face-recognition-in-deepface/
1•serengil•6m ago•0 comments

Give the Internet an Infinite Word Search and the Internet Will Draw Dicks on It

https://gizmodo.com/give-the-internet-an-infinite-word-search-and-the-internet-will-draw-a-dick-o...
1•yathern•7m ago•0 comments

Mailchimp Free Plan Now Supports Only 250 Contacts

https://blog.groupmail.io/mailchimp-free-plan-changes-2026/
2•apparent•11m ago•1 comments

Ask HN: Fastest Security Event Info Channels?

2•timnetworks•12m ago•0 comments

Why doesn't Google Maps show events?

https://tommaso-girotto.co/blog/a-universal-events-app
1•tgirotto•15m ago•2 comments

The Cathedral, the Megachurch, and the Bazaar

https://opensourcesecurity.io/2026/01-cathedral-megachurch-bazaar/
1•todsacerdoti•16m ago•0 comments

Inline-Replies, and Why Outlook 2013 Has Gone Blue (2013)

https://blog.extrobe.co.uk/blog/2013/07/09/inline-replies-and-why-outlook-2013-has-gone-blue/
1•WaluigiBSOD•16m ago•0 comments

Show HN: Run and Compile LLMs in PyTorch on WebGPU

https://github.com/jmaczan/torch-webgpu
1•yu3zhou4•16m ago•0 comments

Nuclear bunker nears collapse due to erosion

https://www.bbc.co.uk/news/articles/c4g0dp65v77o
1•mindracer•17m ago•0 comments

NFR Breaking Shannon Entropy with Instance-Specific LSTM,Arithmetic Coding

https://github.com/AFKmoney/NFR-Compressor
2•philippeantoine•18m ago•1 comments

Linux Mint 22.3

https://blog.linuxmint.com/?p=4981
2•pentagrama•20m ago•0 comments

Systems feel slow to build and fast to use

https://www.alexscamp.com/p/the-best-systems-feel-slow-to-build
1•dovhyi•22m ago•0 comments

ConvertX – Self-hosted online file converter

https://github.com/C4illin/ConvertX
1•javatuts•24m ago•0 comments

Show HN: AI background remover that runs 100% in the browser

https://aishortcutlab.com/background-remover
1•harran•24m ago•1 comments

Dict –- Dictionary Library in C

https://github.com/cecinuga/hmap
1•cecinuga•25m ago•0 comments

Anatomy of a Narrative Virus

https://www.epsilontheory.com/anatomy-of-a-narrative-virus/
1•_vaporwave_•27m ago•0 comments

David Cope's Experiments in Musical Intelligence

https://en.wikipedia.org/wiki/David_Cope
1•hecanjog•27m ago•0 comments

Pentagon embraces Musk's Grok AI chatbot as it draws global outcry

https://www.pbs.org/newshour/world/pentagon-embraces-musks-grok-ai-chatbot-as-it-draws-global-outcry
4•amarcheschi•29m ago•2 comments

Apple's new Creative Cloud competitor lets you edit photos, music and video

https://www.dpreview.com/news/3752934620/apple-s-new-creative-cloud-competitor-lets-you-edit-phot...
1•reaperducer•29m ago•1 comments

AI Adoption vs AI Transformation

https://dentro.de/ai/blog/2026/01/08/ai-adoption-vs-ai-transformation/
1•Zaloog•31m ago•0 comments

DAG of DAGs crushes math benchmark

https://drive.google.com/file/d/1Gn8Efk4F2GW1bT3qGlHmKV-V_C6hIaLk/view
1•bryceroche•31m ago•0 comments

Fnm – Fast and simple Node.js version manager, built in Rust

https://github.com/Schniz/fnm
1•rickcarlino•32m ago•0 comments

A Support End-Effector for Banana Bunches Based on Contact Mechanics Constraints

https://www.mdpi.com/2073-4395/15/12/2907
1•PaulHoule•34m ago•0 comments

Deepgram raises $130M at $1.3B valuation and buys a YC AI startup

https://techcrunch.com/2026/01/13/deepgram-raises-130m-at-1-3b-valuation-and-buys-a-yc-ai-startup/
1•4by4by4•35m ago•0 comments

Show HN: ThreadPatrol ends messy Slack workspaces by gently enforcing threads

https://thread-patrol.com/
1•raianpollock•36m ago•0 comments

Why I Failed to Build a Lego-Style Coding Agent

https://blog.moelove.info/why-i-failed-to-build-a-lego-style-coding-agent
1•moelove•37m ago•0 comments