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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Show HN: Ctk-applet – run Cut-the-Knot Java applets locally

https://github.com/joseluis/ctk-applet
1•joseluis•12s ago•0 comments

Lies I was Told About Collaborative Editing, Part 2: Why we don't use Yjs

https://www.moment.dev/blog/lies-i-was-told-pt-2
1•mvelbaum•2m ago•0 comments

AMD Hints at Big FP64 Increases in MI430X GPU as Ozaki Underwhelms

https://www.hpcwire.com/2026/03/13/amd-hints-at-big-fp64-increases-in-mi430x-gpu-as-ozaki-underwe...
1•rbanffy•3m ago•0 comments

Meta planning layoffs as AI costs mount: Reuters

https://www.cnbc.com/2026/03/14/meta-planning-sweeping-layoffs-as-ai-costs-mount-reuters.html
2•nova22033•3m ago•0 comments

Meta Outlines New MTIA Accelerator Roadmap for Its Next-Gen AI Compute Mix

https://www.servethehome.com/meta-outlines-new-mtia-accelerator-roadmap-for-its-next-gen-ai-compu...
2•rbanffy•4m ago•0 comments

Understanding OpenClaw by Building One

https://github.com/czl9707/build-your-own-openclaw
1•zane__chen•6m ago•3 comments

Show HN: Got tired of AI copilots just autocompleting, and built Glass Arc

3•Conquer01•7m ago•0 comments

Show HN: Pi Patterns: generate Images from slices of π

https://pi.yassi.dev/
1•yassi_dev•8m ago•0 comments

EyeDAR tech could give self-driving cars expanded radar perception

https://newatlas.com/automotive/eyedar-expanded-radar-perception/
2•Brajeshwar•10m ago•1 comments

Dylan Patel – Deep dive on the 3 big bottlenecks to scaling AI compute

https://www.dwarkesh.com/p/dylan-patel
2•kerim-ca•11m ago•0 comments

When building becomes cheaper than specifying, everything changes

https://thepmwhobuilds.substack.com/p/when-building-becomes-cheaper-than
1•ffernandesclaro•13m ago•1 comments

Show HN: Fastify's slow startup is an AJV problem – here's a drop-in fix

1•greatvenerable•14m ago•0 comments

Show HN: Lean-pq a typesafe PostgreSQL connector for lean

https://github.com/typednotes/lean-pq
1•ngrislain•14m ago•0 comments

Show HN: Built an AI ad generator and ran $9K of FB ads with it

https://admakeai.com/
2•mesmertech•14m ago•0 comments

MacBook Neo: on-screen camera indicator light

https://support.apple.com/guide/security/mac-on-screen-camera-indicator-light-sec75a2d237d/web
1•tosh•15m ago•0 comments

Is the Android we once knew slowly getting eroded? [video]

https://9to5google.com/2026/03/13/is-the-android-we-once-knew-slowly-getting-eroded/
1•thunderbong•15m ago•0 comments

Native meshtastic client for HP Jornada 720/728 Win CE

https://github.com/NorthPole-Code/Jornada-CE-meshtastic-client
1•fidotron•16m ago•0 comments

Artificial intelligence-associated delusions and large language models

https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0366(25)00396-7/abstract
2•beardyw•17m ago•0 comments

Security log analyser in Rust with CVSS 3.1 scoring and AI threat detection

https://github.com/Senaraufi/Security-Log-Analyser
1•cybrAy•18m ago•1 comments

Ask HN: Looking for a job after layoff and burnout. What should I focus on

2•jacAtSea•19m ago•3 comments

Parseword

https://www.parseword.com
2•vidyesh•20m ago•0 comments

The Browser Becomes Your WordPress

https://wordpress.org/news/2026/03/announcing-my-wordpress/
6•vidyesh•20m ago•0 comments

Slate, a generalist software agent built for swarms

https://randomlabs.ai/
2•handfuloflight•21m ago•0 comments

Show HN: Crypto Security Toolkit – VPN, Wallets, Exchanges and Tools for Traders

2•SKYFOR•21m ago•0 comments

Depth of Field Simulator

https://jherr.github.io/depth-of-field/
2•jensgk•23m ago•0 comments

Xbox revealed Gaming Copilot is coming to "current-gen consoles" later this year

https://www.gamesradar.com/games/xbox-just-revealed-gaming-copilot-is-coming-to-current-generatio...
1•Risse•23m ago•0 comments

Elite Russian squad targeting enemies abroad was exposed throug Google Translate

https://meduza.io/en/feature/2026/03/14/russia-created-an-elite-hit-squad-to-target-its-opponents...
4•szatkus•24m ago•0 comments

Solid State Battery: Donut's Controversial Leap

https://spectrum.ieee.org/solid-state-battery-2675554640
4•rbanffy•24m ago•1 comments

Sociotechnical Architecture – Having Your Agile and Your Agility Too

https://www.youtube.com/watch?v=ww-osm-IZjI
2•mcp_•24m ago•0 comments

Meta Delays Rollout of New A.I. Model After Performance Concerns

https://www.nytimes.com/2026/03/12/technology/meta-avocado-ai-model-delayed.html
2•tosh•26m ago•0 comments