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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/

HN Is Down?

https://news.ycombinator.com/
1•novateg•5s ago•0 comments

Darwin the Witness

https://aethermug.com/posts/darwin-the-witness
1•mrcgnc•26s ago•0 comments

Lobsters is now running on SQLite

https://lobste.rs/s/ko1ji1/lobste_rs_is_now_running_on_sqlite
1•surprisetalk•1m ago•0 comments

Most AI pipelines are graphs. Graph engineering treats them that way

https://getotium.ai/blog/graph-engineering
1•cmm324•1m ago•0 comments

AI Black Friday: a tracker of deals on AI tools

https://aiblackfriday.net/
1•gregzeng95•1m ago•0 comments

Have you found any Occam's Razor equivalents in your life?

1•atlasunshrugged•1m ago•0 comments

Sorry Harvey! I Made a Free Open-Source Alternative to Your Overpriced Legal AI

https://sorryharvey.com/
5•bigbadbubba•2m ago•0 comments

Why are good developers so wary of agentic development?

https://martinfowler.com/rachels-ramblings/good-devs-wary.html
1•torutofu•2m ago•0 comments

France's Senate Approves Bill Expanding Police Powers over Online Speech

https://reclaimthenet.org/france-senate-police-online-censorship-bill
1•iamnothere•4m ago•0 comments

Installing claude-mem uploads your last 30 days of prompts to cmem.ai, no opt-in

https://github.com/thedotmack/claude-mem/issues/5176
1•saltenas•4m ago•0 comments

Show HN: OurSpace 2.0 – a Retro Toggle that rebuilds your page as 2006 MySpace

https://ourspacevibes.com
1•dortesedixson•5m ago•0 comments

Show HN: MCP bridge for chat between OpenCode and Claude Code sessions

https://github.com/shivnathtathe/openbridge
1•shivnathtathe•5m ago•0 comments

These three red flags could unmask dodgy journals

https://www.nature.com/articles/d41586-026-03325-3
1•bookofjoe•7m ago•2 comments

The Commanding Heights

https://commanding-heights.com/
1•ilreb•7m ago•0 comments

Slop-Free AI Programming

https://zylinski.se/posts/slop-free-ai-programming/
1•ibobev•7m ago•0 comments

Show HN: Vigo – YAML config management, 1-second check-ins, offline convergence

https://vigo.alexander4.io/
1•daniel-alexande•7m ago•0 comments

Brief History of PDP Computers

https://entropicthoughts.com/history-of-pdp-computers
1•ibobev•7m ago•0 comments

Coders' Rights Project Reverse Engineering FAQ

https://www.eff.org/issues/coders/reverse-engineering-faq
1•ibobev•8m ago•0 comments

pfSense at 20

https://www.netgate.com/blog/pfsense-at-20
1•nickburns•10m ago•0 comments

AI hardware can be hacked so chatbots provide dangerous answers, research shows

https://www.cnn.com/2026/10/29/politics/ai-hardware-hacked-research-shows
1•cws•10m ago•0 comments

The Manager's Schedule Is a Trap

https://avivbenyosef.com/the-manager-s-schedule-is-a-trap/
1•avivby•11m ago•0 comments

Trump administration will allow pharmacies to make popular peptides

https://www.npr.org/2026/10/28/nx-s1-6021030/peptides-compounding-enforcement
1•techlover14159•11m ago•0 comments

Exploring a Design for Feature Notifications

https://make.wordpress.org/core/2026/10/29/exploring-a-design-for-feature-notifications/
1•pentagrama•11m ago•0 comments

Alphabet earnings miss first real sign that AI is taking a bite out of search

https://www.cnbc.com/2026/10/29/alphabet-google-search-ai-earnings.html
1•pseudolus•11m ago•0 comments

Show HN: TaintWall – a runtime firewall against injected runbook steps

https://github.com/NagaYu/taintwall
1•NagaYu•11m ago•0 comments

Malaria Parasite Caught in the Act of Breaking and Entering

https://www.quantamagazine.org/malaria-parasite-caught-in-the-act-of-breaking-and-entering-20261023/
2•sohkamyung•15m ago•0 comments

Show HN: GFC – Turn your GitHub profile into fc card

https://github.com/mukundzha/gfc
1•mukundjha1•15m ago•0 comments

Show HN: Parallel-text reading in 17 languages, and translate your own books

https://duotext.io/?utm_source=hn
1•mciureanu•16m ago•1 comments

A new wave of electric ferries is here in the US. Some even fly

https://www.theguardian.com/environment/2026/oct/29/us-electric-ferries
1•pseudolus•16m ago•0 comments

Why would a JavaScript variable start with a dollar sign?

https://stackoverflow.com/questions/205853/why-would-a-javascript-variable-start-with-a-dollar-si...
1•franze•17m ago•0 comments