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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/

Our Modern Mistake

https://www.overcomingbias.com/p/our-modern-mistake
1•jger15•1m ago•0 comments

I Donut believe, third party validation [video]

https://www.youtube.com/watch?v=uiOma6v_EZY
1•Phenomenit•1m ago•0 comments

EVs Coming in 2026

https://www.wired.com/story/the-16-best-evs-coming-in-2026/
1•tromp•2m ago•1 comments

Show HN: Vending Mocha – A lightweight SSG blogging framework

https://vendingmocha.com/
1•kc10•2m ago•0 comments

_ Considered Harmful

https://campedersen.com/183x
1•ecto•3m ago•0 comments

13-hour AWS outage reportedly caused by Amazon's own AI tools

https://www.engadget.com/ai/13-hour-aws-outage-reportedly-caused-by-amazons-own-ai-tools-17093019...
1•rainhacker•3m ago•0 comments

Hallucinations, Zero Discoveries: Forcing an LLM to Invent Math

https://medium.com/@contact.n8n410/550-hallucinations-zero-discoveries-ab796d4257e4
2•solscan_dev•5m ago•0 comments

Better Cooking with Copper [audio]

https://open.spotify.com/episode/4fydZ7JWCAN8UOJzyd6j7e
1•mooreds•6m ago•0 comments

Show HN: Semantic API – Find Any API with Natural Language (LangChain, MCP, CLI)

https://semanticapi.dev
2•IcarusAgent•7m ago•2 comments

Git renames are not renames

https://lornajane.net/posts/2026/git-renames-are-not-renames
1•mooreds•7m ago•0 comments

zclaw: 888 KB Assistant on ESP32

https://zclaw.dev/
1•tosh•7m ago•0 comments

People Loved the Dot-Com Boom. The A.I. Boom, Not So Much

https://www.nytimes.com/2026/02/21/technology/ai-boom-backlash.html
1•zerosizedweasle•7m ago•0 comments

The Strange Case of South American Chickens (2023)

https://www.randyschickenblog.com/home/2019/10/27/chickens-from-outer-space-the-strange-case-of-s...
1•weare138•7m ago•0 comments

The Disintermediation of Databases

https://redmonk.com/rstephens/2026/02/19/database-disintermediation/
1•mooreds•9m ago•0 comments

SF Bike Coalition – Promoting the Bicycle for Everyday Transportation

https://sfbike.org/
1•Austin_Conlon•9m ago•0 comments

Show HN: TeamContext – Git-native shared context for vibe coding teams

https://github.com/hzhou9/TeamContext
2•hzhou9•11m ago•0 comments

Ukraine Paves the Way for Pirate Site Blocking, Despite Ongoing War

https://torrentfreak.com/ukraine-paves-the-way-for-pirate-site-blocking-despite-ongoing-war/
2•gslin•12m ago•0 comments

Show HN: Raypher–eBPF-based runtime security and hardware identity for AI agents

https://github.com/kidigapeet/Raypher-core
2•Kidiga•12m ago•0 comments

Pelorus Jack

https://en.wikipedia.org/wiki/Pelorus_Jack
2•doener•13m ago•0 comments

Show HN: Wiredigg – Real-Time Network Analysis with ML and Ollama Support

1•justvugg•13m ago•0 comments

Execution Containment for Tool-Using AI Agents

1•SpaceCypher•15m ago•0 comments

BetaZero: A free diffusion climb generator for system boards

https://betazero.live
1•EvanMcCormick•18m ago•1 comments

Scientists camouflage heart rate from invasive radar-based surveillance

https://techxplore.com/news/2026-02-scientists-camouflage-heart-invasive-radar.html
2•PaulHoule•18m ago•0 comments

LA.'s mansion tax chokes new construction as permits plunge 40%

https://www.msn.com/en-us/money/realestate/la-s-mansion-tax-chokes-new-construction-as-permits-pl...
2•lxm•20m ago•0 comments

Show HN: Hmem – Persistent hierarchical memory for AI coding agents (MCP)

2•Bumblebiber•21m ago•1 comments

OpenClaw's hidden OTel plugin shows where all your tokens go

https://signoz.io/blog/monitoring-openclaw-with-opentelemetry/
2•pranay01•21m ago•0 comments

Ask HN: What invariants matter most to prevent drift in AI-modified SaaS apps?

1•RobertSerber•21m ago•0 comments

OpenClaw-fueled ordering frenzy creates Apple Mac shortage

https://www.tomshardware.com/tech-industry/artificial-intelligence/openclaw-fueled-ordering-frenz...
2•pretext•21m ago•0 comments

Stardust: Stabilizing Earth's Temperature

https://www.stardustsolutions.com
1•doener•23m ago•0 comments

Permacomputing 101 [video]

https://www.youtube.com/watch?v=BNYxAdjl1f0
1•tosh•24m ago•0 comments