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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/

WikiMedia Foundation Community Tech team has been disbanded, engineers laid off

https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(WMF)
1•vintagedave•38s ago•0 comments

Data vs. Drama–The 20-Year Legacy of Al Gore's Climate Warnings

https://www.newsweek.com/data-vs-drama-the-20-year-legacy-of-al-gores-climate-warnings-opinion-11...
1•bilsbie•1m ago•0 comments

Understanding Age Assurance Accuracy

https://educatedguesswork.org/posts/age-assurance-accuracy/
1•ibobev•1m ago•0 comments

Spring Lisp Game Jam 2026

https://andreyor.st/posts/2026-05-24-spring-lisp-game-jam-2026/
1•ibobev•1m ago•0 comments

How many arguments should a function have in Python?

https://en.andros.dev/blog/43e638f4/how-many-arguments-should-a-function-have-in-python/
1•ibobev•2m ago•0 comments

IBM Quantum Computing Summer School Registration Open

https://www.ibm.com/quantum/blog/qiskit-summer-school-2026
1•phasefactor•2m ago•1 comments

Germany, Spain Push Back on Europe's Plans to Ban Huawei Gear

https://www.bloomberg.com/news/articles/2026-05-27/germany-spain-push-back-on-europe-s-plans-to-b...
1•thm•3m ago•0 comments

Private Equity Bought America's Essential Services

https://rubbishtalk.com/economy/how-private-equity-bought-americas-essential-services/
1•NoRagrets•3m ago•0 comments

Show HN: Gave Claude Code ADHD.. Now it thinks 3x better

https://adhdstack.github.io/
2•udit_50•3m ago•1 comments

One Developer, Two Dozen Agents, Zero Alignment

https://maggieappleton.com/zero-alignment
2•surprisetalk•4m ago•0 comments

Plant-based meats 'politicized'; Beyond Meat takes plunge into protein drinks

https://www.washingtonpost.com/food/2026/05/26/with-plant-based-meats-politicized-beyond-takes-pl...
2•bookofjoe•9m ago•1 comments

Grid global: The most powerful global dollar account

https://grid.lightspark.com
2•janandonly•9m ago•0 comments

Ionizing radiation and melanism in Chornobyl tree frogs

https://pmc.ncbi.nlm.nih.gov/articles/PMC9488684/
1•AFF87•9m ago•0 comments

Self-Consent: When Users Take Control

https://silencelaboratories.com/blog/self-consent-the-next-frontier-for-financial-data-sharing
1•eustoria•10m ago•0 comments

The Large Gilded Coffin of King Tutankhamun

https://egymonuments.gov.eg/news/gilded-coffin-of-king-tutankhamun/
1•brudgers•11m ago•0 comments

Curated collection of A/B test results from best-in-class apps

https://abtest.design/
1•eustoria•12m ago•0 comments

PDE Simulator (the game) – homeoffice viable

https://rogmash.neocities.org/waves
2•rogmash•12m ago•0 comments

Tell HN: GitHub is partially down again

4•croemer•13m ago•2 comments

The Pursuit of Purity (The Right Way to Do AI)

https://marlene.ai/post/ai-pursuit
1•marlene_zw•13m ago•0 comments

I Am Begging You to Read Terry Pratchett

https://www.theatlantic.com/ideas/2026/05/author-terry-pratchett-film/687253/
4•Michelangelo11•14m ago•1 comments

Show HN: Resume Claude Code without replaying your whole session

https://github.com/sofumel/claude-handoff-revive
1•sofumel•14m ago•1 comments

Self-hosted A/B testing in Rust, runs on a $5 VPS

https://easy-experiments.dev/
1•MarkAntipin•14m ago•0 comments

Jomangy: INJ3CTOR3's Self-Healing FreePBX Toll Fraud Campaign

https://cyble.com/blog/jomangy-inj3ctor3s-self-healing-freepbx-toll-fraud-campaign/
1•WeaklingOra•15m ago•0 comments

How Many Solar Panels Would It Take to Equal One Nuclear Reactor?

https://www.bgr.com/2172123/how-many-solar-panel-equal-nuclear-reactor/
1•rustoo•15m ago•0 comments

Show HN: Droast, a Dockerfile linter that stopped being polite

https://ewry.net/droast-dockerfile-linter/
1•immanuwell•17m ago•0 comments

The Megalith Lightning Node

https://megalithic.me/
1•janandonly•17m ago•0 comments

Jensen Huang Just Told Every CEO Hiding Behind AI Layoffs to Shut Up

https://www.thestateofbrand.com/news/jensen-huang-ai-layoffs
4•cdrnsf•18m ago•1 comments

Chrome 148 numeric input bug

https://twitter.com/jaffathecake/status/2059569641609961814
1•keepamovin•20m ago•0 comments

Cost of Electricity by Country 2026

https://worldpopulationreview.com/country-rankings/cost-of-electricity-by-country
2•leonidasrup•21m ago•0 comments

Physics Informed Neural Networks (PINNs): An Intuitive Guide

https://medium.com/data-science/physics-informed-neural-networks-pinns-an-intuitive-guide-fff1380...
1•rramadass•23m ago•1 comments