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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

PromptPageAI

https://www.promptpageai.com/
1•Tippel•46s ago•1 comments

Agents evolving in a SIM, who becomes the top dog and what are they fighting for

https://github.com/NetMindAI-Open/NexusAgent
1•Demi369•3m ago•1 comments

Corita Kent challenged the church and the art world with her creations

https://designexplained.substack.com/p/corita-kent-learning-by-heart
1•kaizenb•5m ago•0 comments

Turn your MacBook's Notch into a file sharing portal

https://www.filenotch.com/
2•EmuSad•9m ago•0 comments

Sam Altman would like to remind you that humans use a lot of energy too

https://techcrunch.com/2026/02/21/sam-altman-would-like-remind-you-that-humans-use-a-lot-of-energ...
1•sfifs•10m ago•0 comments

Drowse: Nix dynamic derivations made easy

https://github.com/figsoda/drowse
1•birdculture•11m ago•0 comments

Show HN: Elev8or - A structured creator marketplace for brands

https://www.elev8or.io
1•Sourabhsinr•15m ago•0 comments

Resonix AG – AI Agent Framework

https://github.com/mangiapanejohn-dev/Resonix-AG
1•Resonix•15m ago•1 comments

The Evolution of Software Engineering

https://djpardis.medium.com/the-evolution-of-software-engineering-from-fortran-to-llms-63d2427a3e73
1•djpardis•23m ago•1 comments

Show HN: AI Timeline – 171 LLMs from Transformer (2017) to GPT-5.3 (2026)

https://llm-timeline.com/
1•ai_bot•24m ago•0 comments

Mathematics in the Library of Babel

https://www.daniellitt.com/blog/2026/2/20/mathematics-in-the-library-of-babel
1•salutis•24m ago•0 comments

Show HN: Performant, cross-device analytical processing research with tinygrad

https://github.com/ronfriedhaber/autark
1•ronfriedhaber•26m ago•0 comments

Source Code Location Hashing for Immediate-Mode APIs

https://jakubtomsu.github.io/posts/source_code_location_hashing/
1•ibobev•27m ago•0 comments

You don't need free lists

https://jakubtomsu.github.io/posts/bit_pools/
2•ibobev•28m ago•0 comments

LinkSnap

https://linksnap.world
1•nirmalh•28m ago•1 comments

Spritework on the Commodore 64

https://bumbershootsoft.wordpress.com/2026/02/21/spritework-on-the-commodore-64/
1•ibobev•29m ago•0 comments

Slack-to-Claude Code CLI gateway for solo developers

https://github.com/ktamas77/claudeway
1•pro_methe5•31m ago•0 comments

There are no statistics in the Kingdom of God (2023)

https://www.experimental-history.com/p/there-are-no-statistics-in-the-kingdom
1•Miraltar•33m ago•0 comments

Show HN: PhraseVault – Desktop text expander, one-time $29 license, source avail

https://phrasevault.app/demo
1•SPQRK•33m ago•0 comments

AI Divide

https://twitter.com/vickyonit/status/2025783511891034566
1•vickyonit•33m ago•1 comments

Magnanrama, a Cyberfeminist Exhibition

https://www.visionscarto.net/magnanrama-cyberfeminist-exhibition
1•recifs•34m ago•1 comments

Show HN:walkie-talkie-style chat with no records,created with just a single link

https://github.com/greatsk55/BLIP
1•hackersk•35m ago•1 comments

Ask HN: How do you know if a tool is solving a real problem?

1•gokulnair2001•37m ago•2 comments

Ask HN: How are EU founders optimizing dividend extraction in 2026?

1•Cyprus-consult•38m ago•0 comments

Show HN: Chaos Monkey but for Audio Video Testing (WebRTC and UDP)

https://github.com/MdSadiqMd/AV-Chaos-Monkey
4•MdSadiqMd•39m ago•0 comments

NASA's Perseverance Now Autonomously Pinpoints Its Location on Mars

https://www.nasa.gov/missions/mars-2020-perseverance/perseverance-rover/nasas-perseverance-now-au...
1•Betelbuddy•39m ago•0 comments

Show HN: The MCP Blueprint – First Comprehensive Book on Model Context Protocol

https://www.amazon.com/dp/B0GPNSPK3Y
1•niuexa•39m ago•0 comments

Agent First Observability

https://github.com/heyojules/lotus
1•gintokinx•39m ago•0 comments

Show HN: I curated 10 builder opportunities this week (signals and MVP specs)

https://aetherite.io
1•crosschainer•42m ago•0 comments

OpenClaw Bans All Crypto Talk on Discord After $16M Fake Token Chaos

https://timescrypto.com/cryptobuzz/ai-and-crypto/openclaw-bans-all-crypto-talk-on-discord-after-1...
2•Alan_Writer•42m ago•0 comments