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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/

Chat never deletes – video evidence

https://discuss.ai.google.dev/t/the-google-ai-overview-itself-describes-google-ai-studio-s-chat-d...
1•Bitu79•27s ago•0 comments

T-Mobile outage, no updates from the company

https://old.reddit.com/r/tmobile/comments/1v8bw52/t_mobile_outage/
1•darth_avocado•3m ago•0 comments

Using AI with a Critical Eye

https://www.loserbydesign.com/new-page-3
1•yehiaabdelm•4m ago•0 comments

Solving Fermat: Andrew Wiles

https://www.pbs.org/wgbh/nova/proof/wiles.html
1•1970-01-01•7m ago•0 comments

The Myth of the 'Waterfall' SDLC

http://www.bawiki.com/wiki/Waterfall.html
1•fanf2•8m ago•0 comments

Show HN: SilkDrop – MilkDrop port for web with live editor

https://silkdrop.vercel.app/
1•usernameis42•9m ago•0 comments

Experts warn current Starship heat shield tech is a "dead end" for rapid reuse

https://arstechnica.com/space/2026/07/despite-recent-successes-rapid-reuse-of-starship-remains-a-...
1•greedo•10m ago•1 comments

Softmax Approximation for FPGAs Using Taylor Series and Pade Approximants

https://leetarxiv.substack.com/p/approximating-softmax-for-fpgas
1•birdculture•10m ago•0 comments

Pivotick is network graph library to facilitate pivoting

https://pivotick.github.io/Pivotick/
1•adulau•10m ago•0 comments

Show HN: Latest Q2 AI SaaS Trends Report

https://relvehq.com/ai-reports/2026-q2-the-state-of-ai-for-saas-companies-fullview
1•hamza_ali_shah•13m ago•1 comments

README, not

https://blog.yossarian.net/2026/07/16/README-not
4•lr0•14m ago•2 comments

Sam Altman says we are in the singularity: 'This is the moment'

https://www.businessinsider.com/sam-altman-openai-the-singularity-agi-prediction-anthropic-nvidia...
2•doener•15m ago•1 comments

Nvidia in Talks with OpenAI to Guarantee $250B Financing for Data Center

https://www.wsj.com/tech/ai/nvidia-in-talks-with-openai-to-guarantee-250-billion-financing-for-da...
1•u1hcw9nx•15m ago•0 comments

Claude shared chats and Artifacts may have ended up on Google

https://techcrunch.com/2026/07/27/psa-your-claude-shared-chats-and-artifacts-may-have-ended-up-on...
2•speckx•22m ago•0 comments

Waymo crashes 1/3 as much as a human driver, says IIHS – with some caveats

https://electrek.co/2026/07/25/waymo-is-2-3-safer-than-a-human-driver-says-iihs-with-some-caveats/
2•Bender•22m ago•0 comments

Octane – compiled and faster React from creator of Inferno

https://octanejs.dev
1•swe_dima•22m ago•0 comments

E-bike bans in schools highlight the growing debate over freedom vs. safety

https://electrek.co/2026/07/27/e-bike-bans-in-schools-highlight-the-growing-debate-over-freedom-v...
1•Bender•25m ago•0 comments

I mapped how 140 governments legally treat Bitcoin

https://thebitcoinact.xyz/bitcoin-legal-map
1•The_Bitcoin_Act•26m ago•0 comments

Show HN: Nexmy – 100% offline Android finance tracker with local AI

https://nexmy.app/
1•BlackSharkDev•29m ago•0 comments

Show HN: A board game with opponents trained by self-play

https://mighty840.itch.io/samudra-manthan
1•sharang33•30m ago•0 comments

Show HN: Full complex text shaping and rendering on ESP32 with 320KB usable RAM

https://github.com/waruyama/flattype-cyd-demo
2•jansan•31m ago•1 comments

A political compass for AI where anyone can add their stance

https://theaicompass.io/?preview=default
1•uncommoncrawl•32m ago•0 comments

From ADHD chaos to IMPOSSIBLY productive and chill?

https://www.taskloco.com/
1•taskloco_nyc•33m ago•0 comments

RevelRaw – a Mac RAW editor that looks at the photo before suggesting presets

https://revelraw.com/
4•kernel_init•33m ago•0 comments

Dozens sickened in 17 states recalled eggs feared contaminated deadly bacteria

https://www.dailymail.com/health/article-16008335/dozens-sickened-recalled-eggs-salmonella.html
2•Bender•33m ago•0 comments

ThinkFull: A 22-specialist Claude Code skill, not an agent pipeline

https://github.com/SuperNotesOnline/ThinkFull
1•jazziejoy•33m ago•0 comments

Forth

https://xkcd.com/3277/
2•beardyw•34m ago•0 comments

Platform engineering 2.0 mitigates AI security and compliance risks

https://platformengineering.org/blog/how-platform-engineering-2-0-mitigates-ai-security-and-compl...
2•CrankyBear•35m ago•0 comments

UK's iconic Jodrell Bank telescope faces axe in science cuts

https://www.bbc.co.uk/news/articles/c5y6r9rdxygo
1•mellosouls•36m ago•1 comments

Anthropic changed a Claude Code default–how I insulated my framework

https://mauroepce.dev/blog/trust-boundaries-claude-code
1•oalders•37m ago•0 comments