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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/

Statement regarding GNU Savannah security reports

https://www.fsf.org/news/statement-regarding-gnu-savannah-security-reports
2•pentagrama•1m ago•0 comments

A record 242 US cities now have starter homes that cost $1M

https://investors.zillowgroup.com/news-and-events/news/news-details/2026/A-record-242-US-cities-n...
2•littlexsparkee•4m ago•0 comments

Director of National Intelligence: Dr. Fauci Funded GoF Research at Wuhan Labs

https://twitter.com/DNIGabbard/status/2067792184753938484
3•panny•15m ago•0 comments

Blackwell Build Atlas

https://elliotbonneville.github.io/rtx6kpro-atlas/
1•elliotbnvl•15m ago•0 comments

I am dreading our LLM-written incident report future

https://surfingcomplexity.blog/2026/06/19/i-am-dreading-our-llm-written-incident-report-future/
2•azhenley•15m ago•0 comments

Build a full knowledge graph locally with any video

https://github.com/goodq02/goodq4all
1•joesdomingo•16m ago•0 comments

I Solved My Mystery Fatigue with AI

https://metalearn.substack.com/p/i-solved-my-mystery-fatigue-with-ai
1•staticshock•18m ago•0 comments

Why Algo Traders Club Is Moving from Hyperliquid to Kalshi

https://www.algotradersclub.com/blog/why-algo-traders-club-is-moving-from-hyperliquid-to-kalshi
1•fode•20m ago•0 comments

Telo confirms 400 kW sustained charging for its tiny electric truck

https://electrek.co/2026/06/19/telo-confirms-400-kw-sustained-charging-tiny-electric-truck/
1•breve•23m ago•0 comments

Efficient C++ Programming for Modern C++ CPUs, Chapter 4/part 2

https://6it.dev/blog/infographics-operation-costs-in-cpu-clock-cycles-take-2-80736
1•birdculture•23m ago•0 comments

Out of Stealth (Kinda)

https://github.com/Egoist-Machines/LodeDB
1•erinmeryl•24m ago•0 comments

Kahneman: Theory Induced Blindness

https://safetyinsights.org/2026/02/16/daniel-kahneman-theory-induced-blindness/
1•Jimmc414•26m ago•0 comments

Show HN: Agentcard – virtual cards for AI agents, now with DoorDash checkout

https://www.agentcard.sh
1•pipeabello•28m ago•0 comments

How to avoid street violence, by a professional kickboxer

https://www.youtube.com/watch?v=Q8Vk9KvLD3Q
1•nailer•29m ago•0 comments

Show HN: P34 – tabular profit prediction without the optimism bias

https://hyperc.com/preview/index.html
1•grandrew•29m ago•0 comments

Lump Sum vs. DCA comparison: LS wins or does it?

https://hduynam99.substack.com/p/lump-sum-vs-dca-comparison-ls-wins
1•hoangthuytrang•29m ago•0 comments

Cursor Is Now SpaceX: Enterprise Agentic Coding's New Lock-In Risk

https://superml.dev/spacex-cursor-enterprise-agentic-coding-lock-in-risk-2026
1•bps1418•30m ago•0 comments

Backstitch: Real-Time Version Control for Godot

https://backstitch.dev/
1•coinfused•39m ago•0 comments

Swedish VPN provider OVPN sold to US stock and asset company

https://www.ovpn.com/en/privacy-notice
3•hackedoffnews•40m ago•2 comments

We built a lab to evaluate data agents – Hex

https://hex.tech/blog/evaluate-data-agents/
2•haritha1313•43m ago•0 comments

Speculation Is All You Need

https://modal.com/blog/spec-is-all-u-need
5•charles_irl•48m ago•0 comments

Kernhelm: A Linux authority wall for untrusted agents

https://github.com/Deso-PK/make-trust-irrelevant/blob/main/Make-Trust-Irrelevant
1•DesoPK•49m ago•0 comments

QuadRF, a modular 4x4 MIMO beamforming tile built with an open antenna arch

https://www.youtube.com/watch?v=zdJ9Tbm8ALg
2•tekacs•50m ago•0 comments

Tradeoff Between Expertise and Flexibility: A Cognitive Entrenchment Perspective

https://www.jstor.org/stable/29765006
2•Jimmc414•52m ago•1 comments

Hey, N00B, We Didn't Hire You to Complete Tasks

https://newsletter.kentbeck.com/p/hey-n00b-we-didnt-hire-you-to-complete
36•rrvsh•55m ago•17 comments

Fiber Optic Drones

https://www.army.mil/article/287737/fiber_optic_drones_posing_a_significant_c_uas_challenge
1•Stevvo•56m ago•0 comments

To Pay Rent in Medieval England, Catch Some Eels

https://www.atlasobscura.com/articles/medieval-eel-rent-map-england
1•ohjeez•57m ago•1 comments

Cirrus: ATProto Personal Data Server That Runs on Cloudflare Workers

https://github.com/ascorbic/cirrus
2•gurjeet•1h ago•0 comments

Tell HN: Adding congestion control and retry tokens to a reliable UDP transport

2•x1colegal•1h ago•0 comments

Einstellung Effect

https://en.wikipedia.org/wiki/Einstellung_effect
2•Jimmc414•1h ago•0 comments