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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/

Behind the Curtain: OpenAI's post-election power play

https://www.axios.com/2026/11/01/scoop-openai-post-midterm-policy
1•pretext•5m ago•0 comments

100% Increase in CVEs YoY

https://app.opencve.io/statistics
1•pranshuchittora•8m ago•0 comments

Apple RAW 9 Deep Dive (macOS/iOS 27) [video]

https://www.youtube.com/watch?v=Fk0K7H6QEAE
1•CharlesW•8m ago•0 comments

An inference server for AMD GPUs, in C++ and HIP

https://codeberg.org/StillDeadcode/radiance
1•this_was_posted•8m ago•1 comments

TLE Tailor

https://github.com/dcajacob/tle-tailor
1•marklit•10m ago•0 comments

Ask HN: Which TV do you recommend for privacy?

2•LecroJS•10m ago•0 comments

Juan Atkins, pioneer of Detroit techno sound, dies aged 64

https://www.theguardian.com/music/2026/nov/01/juan-atkins-pioneer-of-detroit-techno-sound-dies-ag...
2•coffeeyesplease•11m ago•1 comments

The tokens in your agent harness

https://armincat.com/articles/where-tokens-go
1•armcat•11m ago•0 comments

Ask HN: Why does my GitHub project only have 160 stars?

1•gonzar79•13m ago•0 comments

Please don't mess with links

https://maurycyz.com/misc/real_links/
2•Curiositry•14m ago•0 comments

Slop Code Monitor – scanned 2.6B of code to quantify AI cognitive debt

https://slopcodemonitor.ai/
1•mramilli•15m ago•0 comments

Show HN: Crosswalk – terminal manager to reduce sprawl

https://wareshq.com/crosswalk
1•josephspurrier•17m ago•0 comments

Making a rickroll laser

https://maurycyz.com/projects/speaker/
1•Curiositry•17m ago•0 comments

Trucks That Haul 90 Tons of Coal on Battery Power–and Drive Themselves

https://www.wsj.com/world/asia/these-trucks-haul-90-tons-of-coal-on-battery-powerand-drive-themse...
3•bookofjoe•18m ago•2 comments

Ask HN: What mistakes did AI make in your codebase?

1•underdeserver•20m ago•0 comments

"AI for everyone would cost a tenth of a kettle a day

https://allyburns.com/musings/ai-for-all/
1•dolbydb•22m ago•3 comments

Show HN: DSP Explorables

1•FLT8•26m ago•0 comments

Versuscraft: Fact-checked AI comparison posts for dev tools

https://versuscraft.xyz/sample
1•aishwaryashthe•35m ago•0 comments

How Many Times Do They Say "Here We Go" in the Big Bang Theory?

https://sankalpmukim.dev/articles/here-we-go-big-bang-theory
3•sankalpmukim•36m ago•1 comments

FloppoScope Is a Disk Image Analyzer

https://hackaday.com/2026/11/01/flopposcope-is-a-disk-image-analyzer/
1•andrewstuart•37m ago•0 comments

HackerTube

https://hackertube.org/
1•lopespm•38m ago•0 comments

Haley Stevens: I am endorsing Mike Rogers for the United States Senate today

https://twitter.com/HaleyforMI/status/2116945962706862397
1•donsupreme•43m ago•1 comments

Applebee's exposed customers' personal data with database password in app

https://techcrunch.com/2026/10/30/applebees-exposed-customers-personal-data-after-leaving-databas...
3•gnabgib•43m ago•0 comments

Heretic 2.0 Released: Training-free language model modification

2•razster•44m ago•0 comments

Astronomy Picture of the Day: Colors of the Moon

https://science.nasa.gov/image-article/apod-2026-november-1-colors-of-the-moon/
2•taubek•44m ago•0 comments

Proposed data centre will release 23 Hiroshima atomic bomb worth of energy a day

https://www.cbc.ca/lite/story/9.7403677
7•DeepLogin•45m ago•4 comments

Kew launches platform to tackle native seed bottleneck in nature restoration

https://www.kew.org/about-us/press-media/seedpod-platform-launch
2•gnabgib•50m ago•0 comments

It wasn't AI that flipped Proton's charge

https://blog.raed.dev/posts/proton-loser-thinking/
3•Raed667•52m ago•0 comments

Nurses Sound Alarm as 'Uber for Nursing' Apps Push to Deregulate Healthcare

https://nurse.org/news/uber-for-nursing-gig-apps-report/
43•ravetcofx•52m ago•16 comments

Alternativ to ClickUp and Jira

https://inhouseticket.com
1•herrlen•53m ago•0 comments