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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/

Show HN: Imagent – agentic image/video/speech generation

https://github.com/unliftedq/imagent
1•unliftedq•1m ago•0 comments

Spotify deletes streams of chart-topping song after suspicious Kalshi bets

https://www.ft.com/content/2e10851c-9f47-410d-b46e-2a617118b05a
1•thm•3m ago•0 comments

Qwicut – A Desktop App to Turn Any Selection into Intelligence

https://www.qwicut.com
1•yukidkwlbn•8m ago•0 comments

Reducing AI costs with smart pricing

1•millereffect•13m ago•0 comments

AI coding is a nightmare. Am I the only one experiencing this?

1•sollawen•14m ago•0 comments

Four graphs to visualize the unprecedented scale of France's June 2026 heatwave

https://www.lemonde.fr/en/les-decodeurs/article/2026/07/03/four-graphs-to-visualize-the-unprecede...
2•pier25•17m ago•0 comments

Stop Asking "Saga or 2PC." Start Asking What Each Operation Needs

https://medium.com/@pivotfakie/stop-asking-saga-or-2pc-start-asking-what-each-operation-needs-78c...
2•feeblefakie•17m ago•0 comments

Mr. Baby Paint and accidentally discovering a new cellular automata

https://tekstien-marginaalien-keskus.aalto.fi/residenssi/heikki/blog/004-december-2/
3•jfil•19m ago•0 comments

Micro Instrumentation and Telemetry Systems

https://www.abortretry.fail/p/micro-instrumentation-and-telemetry
2•BirAdam•22m ago•0 comments

California votes to ruin 3D printing right after voting to keep killing games [video]

https://www.youtube.com/watch?v=_GIigWnNRVg
5•givemeethekeys•28m ago•0 comments

Proving Claude Knows You by Your Code Style: Author2Vec

https://author2vec.com/
4•tristenharr•29m ago•1 comments

Ask HN: Is this type of writing is compelling, or over rated

3•Daniel-Pan•33m ago•2 comments

Fire and Coast Fire Tracker · Streamlit

3•Rossklot•33m ago•0 comments

U.S. Department of Energy Delivers Third Advanced Reactor Criticality

https://www.energy.gov/articles/us-department-energy-meets-president-trumps-goal-delivers-third-a...
4•simonpure•39m ago•0 comments

Moneyball for Physical AI

https://praxiscurrents.substack.com/p/moneyball-for-physical-ai
3•gmays•40m ago•0 comments

OpenUI: Open Standard for Generative UI

https://www.openui.com
2•handfuloflight•43m ago•0 comments

The delicious irony of Anthropic bemoaning distillation

https://twitter.com/ejzim/status/2072692694036660517
3•MrBuddyCasino•49m ago•0 comments

Lotus: Optimized Agentic and LLM Bulk Processing

https://github.com/lotus-data/lotus
2•handfuloflight•57m ago•0 comments

The end of paper retirement processing at the Office of Personnel Management

https://twitter.com/spikebrehm/status/2072422555101561154
4•MrBuddyCasino•1h ago•0 comments

Hackers On Planet Earth is back in Manhattan next month

https://www.hope.net/
3•fashiontechguru•1h ago•2 comments

GPT-5.5-Cyber built a zlib fuzzing lab in a day

https://blog.trailofbits.com/2026/07/02/field-reports-from-patch-the-planet/
2•wslh•1h ago•0 comments

Don't Train the Model, Evolve the Harness

https://huggingface.co/spaces/joelniklaus/harness-optimization
3•emersonmacro•1h ago•0 comments

Automated Accounting, Financial Reporting and Tax Management

https://maxint.com/blog/maxint-2-24-release
2•pcvetkovski•1h ago•0 comments

Trump's Windfall Has Few Known Global Precedents

https://www.nytimes.com/2026/07/02/world/europe/trump-world-leaders-corruption-wealth.html
3•Alien1Being•1h ago•0 comments

Ask HN: Once you make your money from vibe coding innumerable products, then?

2•keepamovin•1h ago•0 comments

Private Credit Keeps $14B Trapped in Bid to Outlast Storm

https://www.bloomberg.com/news/articles/2026-07-02/private-credit-keeps-14-billion-trapped-in-bid...
2•petethomas•1h ago•0 comments

Ask HN: How do you get your open-source product good traction?

2•akarshhegde18•1h ago•2 comments

Blue Owl hit by $4.7B of redemption requests as investor exodus persists

https://www.ft.com/content/b302a86d-f6eb-4d47-b90b-523c1c19b3fa
3•petethomas•1h ago•0 comments

'Humanity is a privilege': Umar Khalid on his six years in a jail without trial

https://www.theguardian.com/world/2026/jun/30/umar-khalid-interview-six-years-indian-jail-without...
3•thunderbong•1h ago•1 comments

Using precision editing to study human embryo development shows master gene

https://www.cam.ac.uk/research/news/first-use-of-precision-editing-to-study-human-embryo-developm...
3•gmays•1h ago•0 comments