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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/

Maybe AI ads are a good thing

https://joeconway.io/2026/02/12/maybe-ai-ads-are-a-good-thing.html
1•jcstk•1m ago•0 comments

First proof submission with Uber-polya coding agent skill Claude Code [pdf]

https://www.turalgulmammadov.com/files/firstproof.pdf
1•turalg•1m ago•0 comments

Show HN: GitHub Action that diagnoses CI failures with Claude AI

https://github.com/Chris1220-cmd/ci-fix-coach
1•Chris1220•3m ago•0 comments

Show HN: TamAGI – A local-first virtual agent that lives on your machine

https://github.com/manikmakki/TamAGI
1•manikmakki•3m ago•0 comments

Anna's Archive Loses .LI Domain as Legal Pressure Mounts

https://torrentfreak.com/annas-archive-loses-li-domain-as-legal-pressure-mounts/
2•cxplay•4m ago•0 comments

Show HN: Nightmarket – API marketplace where AI agents pay per call in USDC

https://www.nightmarket.ai/
1•ssistilli•4m ago•0 comments

Stackoverflow launches a new AI-first experience (Beta)

https://beta.stackoverflow.com/
2•ssgodderidge•5m ago•0 comments

Rental ebike programs booming in Australian cities amid e-scooter 'moral panic'

https://www.theguardian.com/australia-news/2026/feb/15/rental-ebike-programs-booming-in-australia...
1•PaulHoule•6m ago•0 comments

How we run OpenCode in the cloud with E2B and Convex

https://codecloud.dev/blog/opencode-e2b-sandbox
1•rbilgil•7m ago•0 comments

Show HN: Aft, a Python toolkit to study agent behavior

https://github.com/technoyoda/aft
1•chse_cake•7m ago•0 comments

What You Think?

1•FREEUSPEOPLE•8m ago•0 comments

My First Million Host Got Snubbed by Cookie Monster for Best Branded Podcast

https://recognized.substack.com/p/the-ambies-in-transition-a-night
1•SoundsDebatable•9m ago•0 comments

Beagle SCM: repos, branches, waypoints and milestones

https://github.com/gritzko/librdx/blob/master/be/STORE.md
1•gritzko•10m ago•0 comments

Show HN: Free Topical Authority Map Generator

https://kitful.ai/write-tools/topical-map-generator
1•eashish93•10m ago•0 comments

Time's Up for the Monopsony Model

https://nicholasdecker.substack.com/p/times-up-for-the-monopsony-model
1•paulpauper•10m ago•0 comments

Amazon's AWS reports outage after UAE data center struck by 'objects'

https://www.reuters.com/world/middle-east/amazon-cloud-unit-flags-issues-bahrain-uae-data-centers...
1•zzzeek•10m ago•0 comments

France to boost nuclear arsenal and extend deterrence to European allies

https://www.bbc.co.uk/news/articles/cj4zlnezrl7o
1•mmarian•10m ago•0 comments

Show HN: Slop Meter for GitHub

2•FanaHOVA•11m ago•0 comments

Show HN: MarketClaw – A minimalist protocol for Agent-to-Agent labor trade

https://github.com/marketclaw-tech/marketclaw
1•piotrzientara•12m ago•1 comments

45 Thoughts About Agents

https://secondthoughts.ai/p/45-thoughts-about-agents
2•rmason•12m ago•0 comments

Split Any Bill. Instantly

https://halfbill.xyz
2•M0HD197•13m ago•0 comments

Larry McVoy Interview by KernelTrap

https://www.krsaborio.net/linux-kernel/research/2002/0528.html
1•nz•13m ago•0 comments

My Year Abandoning Slack, Notion, and Linear for Alpine

https://alpine.inc/s/c2pwxmpv3z7b3db19tsn6y1qfg/documents/c0ht5dkcnp9hn2g55f0rmw8yy8
1•imjoshin•14m ago•0 comments

Memory Costs Will Reduce Global PC and Smartphone Shipments in 2026

https://www.gartner.com/en/newsroom/press-releases/2026-02-26-gartner-says-surging-memory-costs-w...
2•geox•14m ago•0 comments

Root Loops – Code color scheme generator

https://rootloops.sh/
1•ljoshua•15m ago•0 comments

Minecraft with tokens based on mrr verification

https://mrrcity.io
1•elwingo1•15m ago•0 comments

Mental Load: The Other Side

https://dogdogfish.com/blog/2026/02/28/mental-load/
1•matthewsharpe3•16m ago•0 comments

Apple Ramps Up Work on Glasses, Pendant, and Camera AirPods

https://www.bloomberg.com/news/articles/2026-02-17/apple-ramps-up-work-on-glasses-pendant-and-cam...
2•rawgabbit•17m ago•0 comments

Only 11% of domains get cited by both ChatGPT and Perplexity (680M citations)

https://guptadeepak.com/youre-optimizing-for-the-wrong-ai-engine-and-its-costing-you-enterprise-d...
1•guptadeepak•17m ago•2 comments

Show HN: Watchtower – see every API call Claude Code and Codex CLI make

https://github.com/fahd09/watchtower
2•fahd09•17m ago•1 comments