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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/

Musk says new 2T param Grok model to be trained on SpaceX engineering corpus

https://twitter.com/elonmusk/status/2079446276299465185
1•handfuloflight•1m ago•0 comments

Why design matters for a web framework: a 7-year evolution

https://wasp.sh/blog/2026/07/13/why-design-matters-for-a-web-framework
1•franjo_mindek•7m ago•0 comments

Cortisol Could Be the Next Frontier for Wearables

https://spectrum.ieee.org/cortisol-continuous-monitor-wearable
1•arnejenssen•7m ago•0 comments

Listening to Number Sequences from Oeis

https://oeis.org/listen.html
1•marysminefnuf•10m ago•0 comments

Linux kernel will support $ORIGIN, sort of

https://fzakaria.com/2026/07/20/linux-kernel-will-support-origin-sort-of
2•ingve•11m ago•0 comments

Open SDK for AGM AG32 Combo RISC-V/FPGA Chip

https://github.com/bbenchoff/AGaMEMnon/
3•djfergus•11m ago•0 comments

Limine: Modern, secure, portable, multiprotocol bootloader and boot manager

https://github.com/Limine-Bootloader/Limine
1•noteness•12m ago•0 comments

The CCS2 Attack Surface on EV Chargers (SSH Root:Root)

https://www.saiflow.com/blog/the-hidden-ccs2-attack-surface-on-ev-chargers
1•denysvitali•15m ago•0 comments

Show HN: Intelligent Log Sanitization and logs to metrics

https://github.com/sanitizeai/logguardai
1•sanitizeai•15m ago•0 comments

The bugged stately home where German prisoners blabbed their secrets

https://www.theguardian.com/culture/2026/jul/20/trent-park-house-of-secrets-review-bugged-prisone...
1•6LLvveMx2koXfwn•17m ago•0 comments

Huawei's plan to achieve the escape velocity: Tau Scaling and datacenters

https://polymath707.substack.com/p/huaweis-strategy-applying-tau-scaling
1•chvid•18m ago•0 comments

Storybook: AI MCP

https://storybook.js.org/ai
1•handfuloflight•26m ago•0 comments

Pay up or not? Ransomware surge has victims facing tough choices

https://arstechnica.com/security/2026/07/pay-up-or-not-ransomware-surge-has-victims-facing-tough-...
1•arto•30m ago•0 comments

US judge approves Anthropic's $1.5B settlement of copyright lawsuit

https://www.reuters.com/world/us-judge-approves-anthropics-15-billion-settlement-copyright-lawsui...
2•throwaway2027•32m ago•0 comments

Modula-3 History Collection on Computer History Museum

https://softwarepreservation.computerhistory.org/modula3/
2•pjmlp•32m ago•0 comments

'Made in EU' password manager shares codebase with Russian State-certified firm

https://brusselssignal.eu/2026/07/made-in-eu-password-manager-shares-codebase-with-russian-state-...
6•alephnerd•34m ago•3 comments

China's Z.ai Completes 1-Gigawatt AI Data Center Using Only Chinese-Made Chips

https://finance.yahoo.com/technology/ai/articles/chinas-z-ai-completes-1-205515769.html
2•angst•34m ago•0 comments

Taipan: Run .py Without CPython

https://github.com/FarhanAliRaza/taipan
2•sts153•42m ago•1 comments

Learn any AI tool in 15 min sessions

https://metana.io/ai-training-for-professionals
1•Hirun_w•45m ago•0 comments

Ernest Hemingway: The End of Something (1925)

https://storyoftheweek.loa.org/2026/07/the-end-of-something.html
2•NaOH•46m ago•0 comments

Waiting for an Epiphany

https://www.scotthyoung.com/blog/2006/12/05/waiting-for-an-epiphany/
2•skilled•48m ago•0 comments

Show HN: Calyxa – Browser Native AI tutor solving the "cheating" problem

https://calyxa.app
1•Darcy0911•50m ago•0 comments

Show HN: 3D Biological Fractals in Browser

https://fractl.art
1•gilded-lilly•51m ago•0 comments

DeepSeek cut prices 75%. The 100x problem remains

https://venturebeat.com/orchestration/deepseek-cut-prices-75-the-100x-problem-remains
3•T-A•51m ago•0 comments

Show HN: Take a photo of a menu, get a website

https://www.eatfoodnow.com/
1•t-van•53m ago•0 comments

Inertia.js Adapter for WordPress and PHP

https://github.com/webkul/inertia
2•himanshu-here•56m ago•0 comments

Job Scheduling for Node.js

https://www.nodecron.com/
1•ankitg12•57m ago•0 comments

"Turing Complete" Learn CPU architecture with puzzles video game

https://www.youtube.com/watch?v=goclUECM2ds
1•innerHTML•59m ago•0 comments

"Fork it or leave": Linus Torvalds fires back at Linux's anti-AI crowd

https://www.neowin.net/news/fork-it-or-leave-linus-torvalds-riles-up-linuxs-ai-luddites/
4•auggierose•1h ago•1 comments

The Hugging Face Breach Is a Warning for Every Company Betting Big on AI

https://www.inc.com/chloe-aiello/the-hugging-face-breach-is-a-warning-for-every-company-betting-b...
2•saikatsg•1h ago•0 comments