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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/

AWS is 10x slower than a dedicated server for the same price [video]

https://www.youtube.com/watch?v=Ps3AI1kTIR4
4•wolfgangbabad•3m ago•0 comments

Show HN: I built directory of fashion brands because I didn't know how to dress

https://brandlist.it.com
1•EthanSeo•5m ago•1 comments

First make it fast, then make it smart

https://kix.dev/first-make-it-fast-then-make-it-smart/
1•kixpanganiban•7m ago•0 comments

Branch, Test, Deploy: A Git-Inspired Approach for Data

https://motherduck.com/blog/git-for-data-part-1/
2•articsputnik•9m ago•0 comments

Human_fallback

https://www.nplusonemag.com/issue-44/essays/human_fallback/
1•pizza•9m ago•0 comments

Tor switches to new Counter Galois Onion relay encryption algorithm

https://www.bleepingcomputer.com/news/security/tor-switches-to-new-counter-galois-onion-relay-enc...
1•N19PEDL2•9m ago•0 comments

AI Slop Recipes Are Taking over the Internet – and Thanksgiving Dinner

https://www.bloomberg.com/news/articles/2025-11-25/ai-slop-recipes-are-taking-over-the-internet-a...
1•thm•11m ago•0 comments

What's the point of learning functional programming?

https://blog.daniel-beskin.com/2025-11-13-point-of-learning-fp
1•imjacobclark•14m ago•0 comments

I Cloned a YC startup in 3 hours

https://kanjieight.vercel.app/
1•Mikecraft•16m ago•1 comments

Qiskit – software stack for quantum computing

https://www.ibm.com/quantum/qiskit
1•thinkingemote•17m ago•0 comments

Cloud Neocloud Lambda's vision of the future: 'One GPU, one person'

https://www.fierce-network.com/cloud/neocloud-lambdas-vision-future-one-gpu-one-person
1•oavioklein•22m ago•0 comments

Idempotency Keys

https://www.morling.dev/blog/on-idempotency-keys/
1•ingve•22m ago•0 comments

Why AI Safety Won't Make America Lose the Race with China

https://www.astralcodexten.com/p/why-ai-safety-wont-make-america-lose
2•pseudolus•25m ago•0 comments

Image Diffusion Models Exhibit Emergent Temporal Propagation in Videos

https://arxiv.org/abs/2511.19936
1•50kIters•26m ago•0 comments

The Thanksgiving Special

https://medium.com/luminasticity/the-thanksgiving-special-cc1f9b6fc9d5
1•bryanrasmussen•26m ago•0 comments

How to Run Profitable Pricing Experiments?

https://cleancommit.io/blog/pricing-experiments/
1•mrkaluzny•27m ago•0 comments

FAA probes Amazon after delivery drone snaps internet cable in Texas

https://www.reuters.com/business/retail-consumer/faa-probes-amazon-after-delivery-drone-snaps-int...
2•pseudolus•35m ago•0 comments

Can You Build a Product with Hard Single-Stack Developers?

https://oneknightinproduct.substack.com/p/can-you-really-build-a-product-with
1•imjacobclark•36m ago•0 comments

ML LLVM Project: Compiler Infrastructure for ML-Driven Optimizations

https://github.com/IITH-Compilers/ml-llvm-project
2•ingve•38m ago•0 comments

Lightweight Linux-compatible kernel written in Rust

https://github.com/maestro-os/maestro
1•coolcoder613•39m ago•0 comments

AISDR Human-First Alternative

https://dealmayker.com/alternative/aisdr
1•aleksam•39m ago•0 comments

SoftBank's 40% Slide from Peak Shows Worry over Giant OpenAI Bet

https://www.bloomberg.com/news/articles/2025-11-26/softbank-s-40-slide-from-peak-reflects-jitters...
4•zerosizedweasle•41m ago•0 comments

Plinko PIR Tutorial

https://vitalik.eth.limo/general/2025/11/25/plinko.html
1•sygma•41m ago•0 comments

AutoITE – An Algorithm for Estimating ITE

https://github.com/HotProtato/AutoITE
1•HotProtato•42m ago•1 comments

Show HN: YTShortsDL: A Bulk Downloader Built for Shorts Content Repurposing

https://ytshortsdl.net/
1•Franklinjobs617•44m ago•1 comments

A Tsunami of Cogs

https://betterthanrandom.substack.com/p/a-tsunami-of-cogs
1•gmays•51m ago•0 comments

Linux Kernel Establishes Official AI Coding Guidelines

https://lunduke.substack.com/p/linux-kernel-establishes-official
5•amcclure•51m ago•1 comments

Neural Annealing: Directing Psychedelic Trips Towards Healing

https://psychotechnology.substack.com/p/neural-annealing-directing-psychedelic
1•eatitraw•52m ago•0 comments

Show HN: Constitutional AI Agent OS (governance enforced at kernel level)

https://github.com/kimeisele/steward-protocol
2•harekrishna108•52m ago•1 comments

You're a Bad Parent but You Don't Need to Be

https://nurtureos.ai/
2•hamandcheese•52m ago•1 comments