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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•8mo ago

Comments

trane_project•8mo 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/

Microsoft's AI Chief says we'll have intimate AI companions within 5 years

https://www.windowscentral.com/artificial-intelligence/microsoft-ai-chief-intimate-ai-companion-i...
1•thunderbong•11s ago•0 comments

Seagate Shipping 32TB HAMR Hard Drives for Server, NAS, & Surveillance Markets

https://www.servethehome.com/seagate-shipping-32tb-hamr-hard-drives-for-server-nas-surveillance-m...
1•rbanffy•14s ago•0 comments

Ask HN: Which common map projections make Greenland look smaller?

1•jimnotgym•16s ago•0 comments

Weprepyou.com Releases BKSB Practice Tests for Only $1.99

https://weprepyou.com/
1•obayuwj•21s ago•1 comments

Nvidia Arm-based N1X gaming laptops reportedly set to debut this quarter

https://www.tomshardware.com/pc-components/cpus/nvidias-arm-based-n1x-equipped-gaming-laptops-are...
1•rbanffy•2m ago•0 comments

DevOps engineer moving to physical CCTV biz – how to manage the mess?

https://soltra.africa
1•jongi_ct•2m ago•1 comments

Building the first open-source quantum computer using Open Quantum Design (OQD)

https://uwaterloo.ca/news/global-futures/building-worlds-first-open-source-quantum-computer
1•giuliomagnifico•3m ago•0 comments

The Free Trade Titans

https://cnliberalism.org/senate-tariff-response-index
1•DustinEchoes•3m ago•0 comments

Monitoring and engaging in social media conversations during a crisis

https://www.tandfonline.com/doi/full/10.1080/23311975.2015.1084978
1•Caarticles•3m ago•0 comments

Shingles vaccine linked to slower biological aging in older adults

https://medicalxpress.com/news/2026-01-shingles-vaccine-linked-slower-biological.html
2•bikenaga•5m ago•0 comments

Palantirization: Pairing enterprise software with high-touch delivery

https://www.a16z.news/p/the-palantirization-of-everything
1•eden123•8m ago•0 comments

How I Use AI

https://carolyngalvin.com/2026/01/15/how-i-use-ai/
2•mooreds•8m ago•0 comments

ARPA-H director eyes future beyond vaccines, winning biotech race against China

https://www.fiercebiotech.com/research/arpa-h-director-eyes-future-beyond-vaccines-and-winning-bi...
1•JPLeRouzic•9m ago•0 comments

Show HN: I built a little catfishing helper

https://halftwin.com
1•hamzaawan•9m ago•1 comments

Show HN: Built a children's hospice donation site using AI agents as team in 8h

https://hoki.help
1•Sem_pre•10m ago•0 comments

Show HN: Ergon – A Durable Execution Library

https://github.com/richinex/ergon
1•richinex•10m ago•0 comments

Show HN: Vibe Coding Coach - Get Instant Help from Senior Software Engineers

https://getvibecodingcoach.com
1•torettoyoung•10m ago•1 comments

Open-Source Python Script Drives Social Media Phishing Campaign

https://reliaquest.com/blog/threat-spotlight-open-source-python-script-drives-social-media-phishi...
1•speckx•12m ago•0 comments

Show HN: I built a GPT that breaks logic into jokes

https://humoropedia.com/
1•RNMI•13m ago•0 comments

Show HN: I built an app to track Autopay bills and subscriptions in one place

https://play.google.com/store/apps/details?id=com.trackautopay.app&hl=en_US
1•vamsi9640•14m ago•0 comments

Poll: When will the thinking machines be destroyed?

1•Bender•15m ago•0 comments

Charity Majors - Bring Back Ops Pride

https://charitydotwtf.substack.com/p/bring-back-ops-pride
3•milkglass•15m ago•0 comments

Generating Shakespeare Without Neural Networks

https://nathan.rs/posts/shakespeare-n-gram/
4•nathan-barry•15m ago•0 comments

DSCI – dead simple CI – better testing call

http://deadsimpleci.sparrowhub.io/doc/demo
1•melezhik•16m ago•0 comments

Internet Archive's Storage

https://blog.dshr.org/2026/01/internet-archives-storage.html
2•zdw•16m ago•0 comments

Show HN: Xv6OS – A modified MIT xv6 with GUI

https://github.com/danko1122q/xv6-os
1•danko_os•16m ago•0 comments

Share and upvote startup ideas – Problem Hunt

https://twitter.com/raj_jagiasi/status/2013000466896998709
1•RJagiasi•17m ago•0 comments

Show HN: Web API with JavaScript rendering and prompt injection defense

https://quercle.dev
1•liran_yo•18m ago•0 comments

Should a Country Speak a Single Language? (2024)

https://www.newyorker.com/magazine/2024/11/25/should-a-country-speak-a-single-language
1•mooreds•18m ago•1 comments

MySQL 8.4 disables AHI – Why and What you need to know

https://kedar.nitty-witty.com/blog/mysql-8-4-disables-ahi-why-and-what-you-need-to-know
1•tanelpoder•20m ago•0 comments