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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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: Revise – a new canvas-based word processor

https://revise.io/features/word-processor
1•artursapek•1m ago•0 comments

Scaling the Fraud Economy: Pig Butchering as a Service

https://www.infoblox.com/blog/threat-intelligence/scaling-the-fraud-economy-pig-butchering-as-a-s...
1•9woc•1m ago•0 comments

I created a tool to roast your landing page

https://landkit.pro/audit
1•nikhonit•2m ago•0 comments

Show HN: A full-scale build simulator for Dreadmyst (Action RPG)

https://dreadmystbuildsimulator.com
1•18272837023•3m ago•0 comments

Lsferreira42/figlet-go: A figlet Golang rewrite

https://github.com/lsferreira42/figlet-go
1•lsferreira42•3m ago•0 comments

Chinese woman discovers her iPhone X can be unlocked by her friend's face (2017)

https://mothership.sg/2017/12/iphone-x-asians-look-the-same/
1•thunderbong•4m ago•0 comments

Fill in a lean canvas nicely in the browser and download it

https://cluelessuk.github.io/lean-canvas-ui/
1•h0h0h0h0111•5m ago•0 comments

Ask HN: How do you prevent AI agents from going rogue in production?

1•techbuilder4242•5m ago•0 comments

AI Analyzes Faces to Measure Pain Levels

https://spectrum.ieee.org/machine-learning-measure-pain-surgery
2•JeanKage•6m ago•0 comments

Show HN: FlexList – A global leaderboard where you pay to own your city

https://flexlist.app
2•frodothebrave•8m ago•1 comments

EmbodIOS - AI inference as the operating system (3.5s cold start)

https://github.com/dddimcha/embodiOS
2•dddimcha•14m ago•0 comments

Birth Lottery

https://www.givingwhatwecan.org/birth-lottery
1•gmays•14m ago•1 comments

InvokeAI Commercial Platform Shuts Down, Open-Source Project Continues

https://softuts.com/invokeai-commercial-platform-shuts-down-open-source-project-continues/
2•XCSme•14m ago•1 comments

Salesforce, SAP, or ServiceNow: Which Is Most Ripe for Disruption?

1•Saurabh_Kumar_•15m ago•0 comments

90% of Cheese Contains a Pfizer-Developed GMO Ingredient–Here's What That Means

https://drgator.substack.com/p/90-of-cheese-contains-a-pfizer-developed
1•nateb2022•15m ago•0 comments

Show HN: AionUi – Open-Source Cowork for Claude Code, Gemini CLI, Codex and More

https://github.com/iOfficeAI/AionUi
2•waili•16m ago•0 comments

Show HN: FastScheduler – Decorator-first Python task scheduler, async support

https://github.com/MichielMe/fastscheduler
1•michielme•17m ago•0 comments

Ask HN: Salesforce, SAP, or ServiceNow: Which Is Most Ripe for Disruption?

1•Saurabh_Kumar_•17m ago•1 comments

Git Subtree and Other Tips for Migrating a Repo

https://spin.atomicobject.com/git-subtree-migrating-repo/
2•philk10•18m ago•0 comments

Password Storage

https://ciamweekly.substack.com/p/password-storage
1•PretzelFisch•18m ago•0 comments

Citigroup set to cut about 1k jobs this week

https://www.reuters.com/sustainability/citigroup-is-set-cut-about-1000-jobs-bloomberg-news-report...
1•geox•19m ago•0 comments

Show HN: StatefulSet Backup Operator v0.0.3–Configurable snapshots, Redis tested

https://github.com/federicolepera/statefulset-backup-operator
1•lep_qq•19m ago•0 comments

Node.js Tuesday, January 13, 2026 Security Releases

https://nodejs.org/en/blog/vulnerability/december-2025-security-releases
2•syvanen•20m ago•0 comments

Show HN: DSAT – Data Subject Access Toolkit

https://codeberg.org/erkinalp/dsat
2•anticensor•21m ago•0 comments

Software Is Mostly All You Need

https://softwarefordays.com/post/software-is-mostly-all-you-need/
4•jbmilgrom•21m ago•0 comments

Pentagon is embracing Musk's Grok AI chatbot as it draws global outcry

https://www.cnbc.com/2026/01/13/pentagon-is-embracing-musks-grok-ai-chatbot-as-it-draws-global-ou...
1•teekert•22m ago•0 comments

The rise (and future fall) of Discord (2024)

https://slugcat.systems/post/24-12-12-the-rise-and-future-fall-of-discord/
1•birdculture•23m ago•0 comments

Apple and Google's AI partnership announcement spells AI wrong

2•pnrth•23m ago•0 comments

Show HN: OneView – Autopilot for Marketing Data

https://oneviewhub.com/
2•lunarrocket•25m ago•0 comments

Overflow: React Flow component library for user-friendly diagrams and flows

https://github.com/synergycodes/overflow-ui
2•diagrammode•26m ago•1 comments