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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/

Why do anxious people lean left?"

https://www.psypost.org/people-with-anxious-tendencies-are-more-likely-to-support-left-wing-econo...
2•bilsbie•3m ago•0 comments

AI guardrails stripped from Meta and Google models in minutes

https://www.ft.com/content/5630ed79-a263-41ed-9a1a-321617ae310e
1•geoffbp•5m ago•0 comments

AI Is Turning Engineers into Farmers, Doctors and Gardeners

https://aswinmohan.me/ai-doctors-engineers
1•aswinmohanme•7m ago•0 comments

Huawei Touts Chip Breakthrough to Shorten Gap with TSMC

https://www.bloomberg.com/news/articles/2026-05-25/huawei-touts-chipmaking-breakthrough-to-shorte...
1•rbanffy•14m ago•0 comments

Apple: Human Interface Guidelines

https://github.com/gingerbeardman/apple-human-interface-guidelines/tree/main
1•tosh•14m ago•0 comments

Mark Zuckerberg's Right-Hand Man Who's Unleashing AI at Meta

https://www.wsj.com/tech/ai/meta-andrew-bosworth-ai-3df12d4f
1•Brajeshwar•16m ago•0 comments

Show HN: Cursed Browser – a VLM reads the HTML and hallucinates the page

https://github.com/scosman/cursed_browser
1•scosman•17m ago•0 comments

Vibe Coding Your Infrastructure

https://www.ivan.codes/blog/vibe-coding-infrastructure
2•ivandotcodes•17m ago•0 comments

Show HN: Linear Chess – Normal Chess, on a 1D board

https://youbee.cloud/chess/chess.html
1•MarcellusDrum•22m ago•0 comments

You Were Never Declaring State. You Were Observing by Hand

https://webframp.com/posts/you-were-never-declaring-state/
1•nickstinemates•23m ago•0 comments

I just sequenced a human genome to 30× coverage at home

https://twitter.com/SethSHowes/status/2058835208586362913
1•MrBuddyCasino•25m ago•0 comments

Exit IP VPN servers mitigation rollout

https://mullvad.net/en/help/exit-ip-vpn-servers-mitigation-rollout
2•Cider9986•25m ago•0 comments

Bursting My AI Bubble

https://indecisiorama.bearblog.dev/bursting-my-ai-bubble/
2•wrxd•26m ago•0 comments

Exit IP fingerprinting between VPN servers

https://mullvad.net/en/blog/exit-ip-fingerprinting-between-vpn-servers
1•Cider9986•26m ago•0 comments

Alexander Horned Sphere

https://en.wikipedia.org/wiki/Alexander_horned_sphere
1•thunderbong•27m ago•0 comments

AI Evaluation Is Biased – By Design

https://alokit.substack.com/p/your-ai-evaluation-is-biased-by-design
1•avikalp•31m ago•0 comments

Show HN: Browser-based Glider Sim

https://glider.benedictshegog.xyz/
1•bensg•32m ago•0 comments

S there room for a VPN with zero Five Eyes servers and RAM-only infrastructure?

1•yanbinette•32m ago•2 comments

Michael Phelps on finding purpose beyond the pool

https://www.cnn.com/2026/05/25/sport/michael-phelps-mental-health-water-safety
1•mooreds•32m ago•0 comments

Big university system is embracing AI. Students/faculty aren't all on board

https://text.npr.org/nx-s1-5772820
3•mooreds•33m ago•0 comments

Show HN: A web to see nearby TFL trains

https://nexttrain.london
1•mgranados•33m ago•0 comments

What ClickHouse learned from a year of coding with AI agents

https://thenewstack.io/clickhouse-ai-coding-agents/
1•Brajeshwar•34m ago•0 comments

The Coming Layoffs and the Revenge of the Measurers

https://www.hackyexperiments.com/blog/the-revenge-of-the-measurers
4•bilater•35m ago•0 comments

Google facing court for retaliation against Gaza whistleblower

https://www.foxglove.org.uk/2026/05/20/google-court-retaliation-gaza-whistleblower/
2•lovegrenoble•37m ago•0 comments

Hacker News RSS

https://hnrss.github.io/
1•mooreds•37m ago•0 comments

StubZero: $148,337 RCE in Google Cloud Production

https://brutecat.com/articles/google-cloud-rce/
1•Cider9986•39m ago•0 comments

Ask HN: Is it just me or has Gemini enshittified in the last three weeks?

1•EvanMcCormick•39m ago•1 comments

Huawei announced it will have a 1.4nm equivalent density process by 2031

https://www.electronicsweekly.com/news/business/huawei-looks-to-1-4nm-by-2031-2026-05/
1•yogthos•39m ago•0 comments

Pouta.dev – Open-Source Block Editor CMS for Astro, Next.js on Cloudflare

https://pouta.dev/
2•mohanjith•41m ago•0 comments

Are "Real" Catholics as Conservative as Evangelicals?

https://www.graphsaboutreligion.com/p/are-real-catholics-as-conservative
1•lordleft•41m ago•0 comments