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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/

1•trowa159•34s ago

Angeldust – a solo-built voxel world that runs on everything [video]

https://www.youtube.com/watch?v=zssnlbRibFM
1•coolwulf•48s ago•0 comments

Does AI have a UI/UX problem?

https://twitter.com/PereraBinoy/status/2068432457234513955
1•adisingh13•1m ago•0 comments

Daybreak: Tools for securing every organization in the world

https://openai.com/index/daybreak-securing-the-world/
1•tabletcorry•1m ago•0 comments

Ask HN: Is GitHub Actions struggling again?

1•tom1337•1m ago•0 comments

A Glimpse into the "Search Your Target" Market for Stolen Credentials

https://www.bleepingcomputer.com/news/security/a-glimpse-into-the-search-your-target-market-for-s...
1•Brajeshwar•3m ago•0 comments

A 10-person team cut median cycle time from 72 to 27 hours in 30 days

https://www.poggle.ai/blog/engineering-productivity-case-study
1•Ghostcrawl3r•4m ago•0 comments

Meta's Crawler Ate My 2TB Bandwidth

https://www.rodneyosodo.com/blogs/2026-06-22_metas_crawler_ate_my_2TB_bandwidth
1•rodneyosodo•4m ago•1 comments

Steam Machine 512GB

https://store.steampowered.com/sub/1629447/
4•Philpax•4m ago•0 comments

A viral doomsday scenario aims to shake Europe out of its AI complacency

https://www.theguardian.com/technology/2026/jun/20/europe-sleepwalking-ai-disaster-us-china
2•gmays•5m ago•0 comments

Steam Machine

https://store.steampowered.com/hardware/steammachine
8•theschwa•5m ago•1 comments

Blogger Defeats Photographer's Copyright Claim-Sokolskyfilm vs. Messiah

https://blog.ericgoldman.org/archives/2026/06/blogger-defeats-photographers-copyright-claim-sokol...
4•speckx•9m ago•0 comments

Unit Tests for a Novel

https://worldfall.ink/blog/
4•isobelvane•9m ago•0 comments

My journey of making my first-ever circuit

https://medium.com/@khwajamaazahmedsiddiqi/my-journey-of-making-my-first-ever-circuit-4f1de935fecd
2•pknerd•9m ago•0 comments

The Download: record-breaking subsea tunnels and flexible data centers

https://www.technologyreview.com/2026/06/22/1139385/the-download-rogfast-subsea-tunnel-flexible-d...
2•joozio•11m ago•0 comments

Europe faces rising competition for energy from Asia

https://www.politico.eu/article/every-man-for-himself-europe-warned-of-rising-competition-for-ene...
3•alephnerd•12m ago•0 comments

Tata Electronics cyber breach claiming to expose Apple, Tesla trade secrets

https://www.yahoo.com/news/world/articles/indias-tata-electronics-hit-cyber-153155513.html
4•Hypathia•12m ago•0 comments

Show HN: Loqi, a "local-first" translation tool using Ollama/llama.cpp

https://github.com/danterolle/loqi
2•danterolle•13m ago•0 comments

Show HN: React Native Boost – swaps RN's Text/View wrappers for native ones

https://github.com/kuatsu/react-native-boost
3•mfkrause•14m ago•1 comments

It Was Always Email

https://www.primitive.dev/blog/it-was-always-email
5•mymx•16m ago•0 comments

Plans for battery swapping Electric trucks in UK

https://www.independent.co.uk/cars/electric-vehicles/battery-swap-for-electric-trucks-octopus-cat...
4•lonelyasacloud•16m ago•1 comments

The Probability Index: Passive exposure to the market portfolio of probabilities

https://predmarketindex.com/
2•JV00•20m ago•0 comments

The Optimal Amount of Slop Is Non-Zero

https://www.slater.dev/2026/06/the-optimal-amount-of-slop-is-non-zero/
5•sltr•21m ago•0 comments

AMD releases FSR 4.1 upscaling for older graphics cards

https://www.theverge.com/news/953664/amd-fsr-4-1-upscaling-rx-7000-series-gpus-rdna-3
3•saghm•21m ago•0 comments

Absolute State of Unreal 2026

https://www.joewintergreen.com/absolute-state-of-unreal-2026/
3•gafferongames•23m ago•0 comments

Show HN: Vivijure – Self-hosted AI film studio on your own GPU (AGPL)

https://github.com/skyphusion-labs/vivijure
2•skyphusion•24m ago•0 comments

Mexico Just Showed Off a New Cheap, Government-Backed EV

https://gizmodo.com/mexico-just-showed-off-a-new-extremely-cheap-government-backed-ev-2000769080
6•speckx•27m ago•0 comments

Stop Slopping Your Skills

https://rahulbaboota.substack.com/p/stop-slopping-your-skills
2•RahulBaboota•27m ago•0 comments

Former hacker saw the light–and now wants to collect all of it

https://arstechnica.com/features/2026/06/this-former-hacker-saw-the-light-and-now-wants-to-collec...
4•Brajeshwar•27m ago•0 comments

Godot confirms it tolerates 'some AI assistance' but rejects 'vibe coded' tag

https://www.gamedeveloper.com/business/godot-confirms-it-tolerates-some-ai-assistance-but-rejects...
3•HelloUsername•29m ago•0 comments