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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/

Get(key) in libmdbx by up to x1000 using a lock‑free cache on top of a B‑tree

https://github.com/orgs/Mithril-mine/discussions/314
1•erthink•2m ago•0 comments

Claude Session URL appended to commit messages and PR descriptions by default

https://github.com/anthropics/claude-code/issues/66504
2•sparsesignal•5m ago•0 comments

Ask HN: Do you run A/B Tests?

2•hackeryogi•16m ago•0 comments

Nobody Told Me People Still Code New Games for a 1982 Computer

https://comuniq.xyz/Technology/post?t=1634
2•01-_-•18m ago•0 comments

Sports Engines

https://random.ma.ttias.be/boxermotor
2•Mojah•18m ago•0 comments

AWS mumbles about its cost-busting networking tech when it should be shouting

https://www.theregister.com/networks/2026/08/29/aws-mumbles-about-its-cost-busting-networking-tec...
2•sandbach•20m ago•0 comments

Claude Team Plan for Scientists

https://claude.com/programs/team-plan-for-scientists
2•Anon84•23m ago•0 comments

Vaultwarden Sequence Diagrams

https://app.ilograph.com/demo.ilograph.Vaultwarden/Log%2520In
2•billyp-rva•25m ago•0 comments

No AI Fridays

https://noaifridays.com/
3•xendo•25m ago•1 comments

The MAI Image and Reve 2.1 ranks higher than GPT Image 2 now

https://artificialanalysis.ai/image/leaderboard/editing
2•creatune•30m ago•0 comments

Senior Software Engineer

3•sshahu•30m ago•0 comments

Tinkering is Up: browser-based local reader for Hacker feeds

https://future-secured.com/41133
2•adrianwaj•32m ago•0 comments

FOSDEM 2027: 30 & 31 January 2027 Brussels, Belgium

https://fosdem.org/2027/
2•edward•37m ago•0 comments

Eed

4•clawd2bot•40m ago•0 comments

Android /iOS mobile application Vulnerability Scanning

2•klars-ai•41m ago•0 comments

Supersaturated Sodium Acetate [video]

https://www.youtube.com/watch?v=rSZsGOzVByg
2•skibz•42m ago•0 comments

Leak of Internal Valve Data

https://www.pcgamer.com/games/fps/a-massive-cache-of-valve-data-has-reportedly-leaked-online-appe...
4•thispbowden•43m ago•0 comments

Tinyhash: SHA-512/256 in the browser, zero servers, zero deps

https://raw.githack.com/EltonCherrington/tinyhash/main/tinyhash.html
2•memctlagent2026•43m ago•0 comments

The shrinking landscape of linguistic diversity in the age of LLMs

https://www.nature.com/articles/s41562-026-02550-0
2•Anon84•43m ago•0 comments

AgentObs – a hook that blocks Claude Code before you hit your limit

2•klars-ai•44m ago•0 comments

Nothing Left to Say

https://jdranpariya.com/writings/nothing-left-to-say/
2•JDRanpariya•48m ago•0 comments

Hy4 Preview

https://simonwillison.net/2026/Aug/29/hy4/
3•kyisaiah47•50m ago•0 comments

monty-go: Pure-Go wrapper for Pydantic's Monty Python Interpreter

https://github.com/fugue-labs/monty-go
7•networked•54m ago•0 comments

Idlen: Ads in the IDE, in AI chats, and a self-serve ads manager

https://www.idlen.io/
2•paulidenfounder•54m ago•0 comments

Show HN: C# Game Engine with its own scripting language and IDE

https://github.com/ArcadeMakerSources/ArcadeMaker/tree/master
5•am-gm•55m ago•0 comments

A walkable ASCII cyberpunk city in one self-contained HTML file

https://github.com/MiguelCarino/CyberCity
4•ncts•55m ago•1 comments

He Was a Top Lawn Care Influencer on YouTube. Then Everything Went Haywire

https://www.nytimes.com/2026/08/30/magazine/greg-chism-youtube-bad-baby.html
3•snide•55m ago•0 comments

LLM usage in Debian neither endorsed nor prohibited

https://www.debian.org/vote/2026/vote_002#texte
3•birdculture•1h ago•0 comments

NASA's Roman Space Telescope: 'Go' for Launch

https://science.nasa.gov/blogs/roman/2026/08/30/nasas-roman-space-telescope-go-for-launch-2/
2•geox•1h ago•0 comments

Angels and Demons (Aquinas 101) [video]

https://www.youtube.com/watch?v=J_xIChMDYGI
2•3willows•1h ago•0 comments