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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/

Two vendors run 91% of the secure email gateway market for US public companies

https://ciphercue.com/blog/email-triopoly-us-public-companies-2026
1•adulion•4m ago•0 comments

Show HN: A JSON/XML viewer that turns your data into a real spreadsheet table

https://prettyjsonxml.com/
2•aleksandre_dev•6m ago•0 comments

Show HN: The first agentic coding engine that hot-reloads the full stack

https://serverpod.dev/blog/serverpod-4-preview
3•vlidholt•8m ago•0 comments

The Laplace limit for solving Kepler's equation

https://www.johndcook.com/blog/2026/06/07/the-laplace-limit/
1•ibobev•10m ago•0 comments

No news is bad news: The hidden threat of unchecked local misinformation

https://www.smf.co.uk/publications/social-media-local-misinformation/
1•healsdata•11m ago•0 comments

Faking keyword arguments to functions in C++

https://nibblestew.blogspot.com/2026/06/faking-keyword-arguments-to-functions.html
1•ibobev•12m ago•0 comments

AI to be used in crown courts to reduce time victims have to wait

https://news.sky.com/story/ai-to-be-used-in-crown-courts-to-reduce-time-victims-have-to-wait-1355...
1•austinallegro•12m ago•0 comments

LLMs and Almost Good Code

https://entropicthoughts.com/llms-and-almost-good-code
1•ibobev•12m ago•0 comments

Show HN: Memorypad – A simple editor for your working thoughts

https://memorypad.io/
1•Malfunction92•14m ago•0 comments

Show HN: Fenced – Markdown to self-contained HTML with decorated code blocks

https://fenced.dev/
1•lars-dev•17m ago•0 comments

Under the Trump crypto playbook, the family always wins

https://www.reuters.com/investigations/under-trump-crypto-playbook-family-always-wins-investors-d...
1•puzzlingcaptcha•17m ago•0 comments

Ford's AI rally recalls the dot com bubble

https://www.bloomberg.com/opinion/articles/2026-06-08/ford-s-ai-rally-recalls-the-dot-com-bubble
1•xrd•18m ago•0 comments

Show HN: Welter's game, a little Nim-like combinatorial game

https://welter.fuglede.dk
2•fuglede_•19m ago•0 comments

Generate synthetic FHIR patient records for EHR testing

https://apify.com/johnvc/synthea-medical-record-generator-api/examples/synthetic-fhir-patient-rec...
1•johncole•19m ago•0 comments

Show HN: Learn from 30 historical figures, open source, nonprofit, self-hosted

https://github.com/chipmates/agoracosmica
1•micstradev•20m ago•1 comments

A new database category – the predictive database

https://aito.ai/blog/introducing-a-new-database-category-the-predictive-database/
1•arauhala•21m ago•0 comments

Show HN: Sheaft – simulate service failures before deploying

https://github.com/MB3R-Lab/Sheaft
1•a-a-k•24m ago•0 comments

Pg_plan_advice: Plan Stability and User Planner Control for PostgreSQL?

http://rhaas.blogspot.com/2026/03/pgplanadvice-plan-stability-and-user.html
1•ksec•27m ago•0 comments

Anbernic RG Rotate handheld game console coming soon for $88 and up

https://liliputing.com/anbernic-rg-rotate-handheld-game-console-with-flip-out-display-coming-soon...
1•PaulHoule•28m ago•0 comments

FlashMemory-DeepSeek-V4

https://arxiv.org/abs/2606.09079
1•GaggiX•28m ago•1 comments

Most "Chat with Your Data" Products Will Fail

https://medium.com/codex/most-chat-with-your-data-products-will-fail-5956f1aff212
1•theanonymousone•29m ago•0 comments

ChiWhoBike Interview #93

https://chiwho.bike/interviews/93
1•mooreds•29m ago•0 comments

Kaku: A fast, out-of-the-box macOS terminal built for AI coding

https://kaku.fun/
1•emschwartz•29m ago•0 comments

AI won't replace your mentor, but it might be the only one available

https://irowell.io/blog/AI_won%27t_replace_your_mentor,_but_it_might_be_the_only_one_available
1•irowell•30m ago•0 comments

Show HN: Gravity – interactive solar-system simulator, from Newton to Einstein

https://qunabu.github.io/Gravity/
2•qunabu•30m ago•0 comments

Canada to ban social media for kids under 16

https://cultmtl.com/2026/06/canada-to-ban-social-media-for-kids-under-16/
1•mooreds•30m ago•0 comments

Performance Improvements in JDK 26

https://inside.java/2026/06/09/jdk-26-performance-improvements/
1•rowbin•30m ago•0 comments

AI and Identity Survey Findings

https://fusionauth.io/blog/2026-ai-identity-report
1•mooreds•31m ago•0 comments

Apple Outlines AI and Developer Tool Updates at Platforms State of the Union

https://www.macrumors.com/2026/06/09/apple-outlines-major-ai-and-developer-tool-updates/
1•ksec•31m ago•0 comments

Jaydebeapiarrow – A high-performance JDBC bridge for Python

https://github.com/HenryNebula/jaydebeapiarrow
1•HenryNebula•33m ago•0 comments