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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/

The Nixpkgs core team has unfortunately decided to disband

https://github.com/NixOS/org/pull/277
1•codewiz•2m ago•0 comments

"The original URL for this prediction will no longer be available in 11 years." (2011)

https://longbets.org/601/
1•doubletwoyou•4m ago•0 comments

How I sell my garlic online.

https://Demeterfamilyfarm.com
1•Hilliard_Ohiooo•5m ago•0 comments

Why MySpace fans want it back as relaunch hinted

https://www.bbc.com/news/articles/c4g64152v71o
2•1659447091•11m ago•0 comments

Small Talk to Deep Talk

https://talk.bradwoods.io/blog/small-talk-to-deep-talk
1•bradwoodsio•13m ago•0 comments

Show HN: Open-source, searchable HTML workspace for Claude Code

https://anona-labs.github.io/mirror/
1•anoop_kumar•24m ago•0 comments

StackOverflow Read-Only

https://stackoverflow.com
1•anticensor•26m ago•1 comments

AI creates 16 new viruses from scratch after training on 9T nucleotides

https://www.tomshardware.com/tech-industry/artificial-intelligence/ai-creates-16-new-viruses-that...
2•sbulaev•28m ago•1 comments

Gen Z Is Drinking Alcohol as Much as Older Generations

https://www.businessinsider.com/gen-z-drinking-alcohol-moderation-sobriety-new-data-2026-7
1•satvikpendem•28m ago•0 comments

Illinois Just Told Every Operating System to Start Reporting Your Kid's Age

https://itsfoss.com/news/illinois-age-verification-bill/
5•WaitWaitWha•31m ago•0 comments

Show HN: Sqnc.run – a live cipher stream inspired by number stations

https://sqnc.run/
1•nee_oo_ru•31m ago•0 comments

UV printer copies 3D objects (Strange Parts) [video]

https://www.youtube.com/watch?v=3DiVHTj_8nA
1•consumer451•31m ago•0 comments

What Happened: OpenAI and HuggingFace

https://thezvi.substack.com/p/what-happened-openai-and-huggingface
2•jgalt212•35m ago•1 comments

New 'Water Watch Center' launched to help small utilities stop cyberattacks

https://www.nextgov.com/cybersecurity/2026/08/new-water-watch-center-launched-help-small-utilitie...
1•WaitWaitWha•40m ago•0 comments

Mossad accicentally injected data to a French lawyer phone instead of extracting

1•0x54MUR41•50m ago•0 comments

Show HN: CIRadar – Self-hosted CI failure diagnosis

https://github.com/Bluezly/CIRadar
1•bluezly•51m ago•0 comments

Provenance

https://en.wikipedia.org/wiki/Provenance
1•soupspaces•52m ago•0 comments

Zig's Io.Threaded Is Neat

https://matklad.github.io/2026/08/06/neat-io-threaded.html
1•Retro_Dev•56m ago•0 comments

Never Gonna Give You Up but the lyrics are in alphabetical order [video]

https://www.youtube.com/watch?v=Svj1bZz2mXw
1•mooreds•59m ago•0 comments

One Cut – Edit Video by Editing Code

https://github.com/smy20011/onecut
1•smy20011•1h ago•0 comments

See the Sun like never before with most detailed images yet

https://www.bbc.com/news/articles/c36d4376nd2o
3•mooreds•1h ago•0 comments

Some software talks I like

https://char.lt/blog/2026/08/talks-i-like/
1•vinhnx•1h ago•0 comments

LA Freeway (Long's to Arapaho Traverse)

https://www.mountainproject.com/route/117783697/la-freeway-longs-to-arapaho-traverse
1•mooreds•1h ago•0 comments

E.U. Nears Approval of Gene-Edited Crops as Olive Sector Eyes Applications

https://www.oliveoiltimes.com/world/e-u-nears-approval-of-gene-edited-crops-as-olive-sector-eyes-...
2•johntfella•1h ago•0 comments

MRMS Renderer – Open-Source NOAA MRMS Radar Renderer for Python

https://github.com/Taylor-Creative-Development/mrms-renderer
1•davidtaylorjr•1h ago•0 comments

Show HN: Qwen3.8-Max – Use Qwen Studio and MCP to Code Locally for Free

https://github.com/tohid4n/qwen3.8-max-local-coding
2•tohid4n•1h ago•0 comments

Retraction: The App Store Rejection of the Week That Was a Correct Rejection

https://daringfireball.net/2026/08/retraction_app_store_rejection_of_the_week
33•minimaxir•1h ago•2 comments

Ms. Tippi Hedren – The Godmother of the Vietnamese Nail Industry

https://vietnamesemuseum.org/details/ms-tippi-hedren/
2•thunderbong•1h ago•0 comments

Alternate Routing Graph

https://agentchannels.org/
1•FelineStateMach•1h ago•0 comments

The Color Recession May Be Permanent

https://www.theatlantic.com/ideas/2026/08/colorless-gray-products-houses/688174/
1•fortran77•1h ago•0 comments