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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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: OpenMessage – Google Messages Client for macOS with MCP Server

https://openmessage.ai
1•MaxGhenis•35s ago•0 comments

Ask HN: Do provisional patents matter for early-stage startups?

1•gdad•1m ago•0 comments

The Cost of Truth

https://www.samrian.com/blog/cost-of-truth
1•Abdulhafiz_F•4m ago•1 comments

Show HN: Self-hosted WhatsApp archive viewer with chat analytics

https://github.com/sabrieker/whatsapp-archive
1•sabri_eker•4m ago•0 comments

JSONata: A JSON query and transformation language

https://jsonata.org/
1•fanf2•4m ago•0 comments

Vibe coding an RSS feed – how hard can it be?

https://blog.fortrabbit.com/vibe-coding-an-rss-feed/
1•esher•4m ago•0 comments

Writing an LLM from scratch, part 32a – Interventions: training a baseline model

https://www.gilesthomas.com/2026/02/llm-from-scratch-32a-interventions-baseline-model
1•ibobev•6m ago•0 comments

Why Is the Sky Blue?

https://explainers.blog/posts/why-is-the-sky-blue/
2•udit99•6m ago•0 comments

Writing an LLM from scratch, part 32B – Interventions: gradient clipping

https://www.gilesthomas.com/2026/02/llm-from-scratch-32b-interventions-gradient-clipping
1•ibobev•7m ago•0 comments

Child internet safety campaign accused of censoring teenagers' speeches

https://www.theguardian.com/technology/2026/feb/08/childnet-internet-safety-campaign-accused-cens...
1•beardyw•7m ago•0 comments

Writing an LLM from scratch, part 32c – Interventions: removing dropout

https://www.gilesthomas.com/2026/02/llm-from-scratch-32c-interventions-removing-dropout
1•ibobev•7m ago•0 comments

Hello, Dada!

https://smallcultfollowing.com/babysteps/blog/2026/02/09/hello-dada/
2•weinzierl•8m ago•0 comments

Microbial Olympics: Super-duper one-celled athletes

https://knowablemagazine.org/content/article/living-world/2026/welcome-to-the-microbial-olympic-g...
1•PaulHoule•8m ago•0 comments

Trumpedia: Wiki Articles Rewritten by Trump

https://trumpedia.org/
1•nbaronia•10m ago•0 comments

How to Quiet a Ugreen 4800 Plus Without Sacrificing Drive Temps

https://blog.tymscar.com/posts/ugreen4800plusquiet/
1•tymscar•10m ago•0 comments

OpenClaw: I gave an AI my credit card and let it loose on Amazon

https://www.codedojo.com/?p=3243
1•surrTurr•11m ago•0 comments

Taiwan rejects possibility of transferring 40% of semiconductor capacity to US

https://www.tomshardware.com/tech-industry/semiconductors/taiwan-rejects-possibility-of-transferr...
1•pseudolus•11m ago•0 comments

Identification of Chlamydia pneumoniae in Alzheimer's disease retina

https://www.nature.com/articles/s41467-026-68580-4
1•bookofjoe•12m ago•0 comments

Tarot: XVII the Star: Quantum Computing

https://www.suzannetreister.net/HEXEN2/TAROT_COL/TAROT_Star-Quantum.html
1•isomorph•12m ago•0 comments

The Crank Spectrum

https://exple.tive.org/blarg/2026/02/07/on-the-crank-spectrum/
1•speckx•13m ago•0 comments

Show HN: ChatKeepsake – Turn iMessage Conversations into Printable Keepsakes

https://chatkeepsake.com/
1•ryan_gaudet•13m ago•0 comments

Hexen 2.0

https://www.suzannetreister.net/HEXEN2/TAROT_COL/HEXEN_2_TAROT.html
1•isomorph•14m ago•0 comments

The AGAT (Adventure Game Aptitude Test)

https://theagat.co/
1•JohnHendrix•15m ago•1 comments

Show HN: Open source setup to self-host OpenClaw instances on any host

https://github.com/Agent-3-7/openclaw-host-kit
7•vishnukool•15m ago•6 comments

Ask HN: What is this "boilerplate" of which you speak?

3•qwesfaqsfg•15m ago•1 comments

Sandboxels

https://neal.fun/sandboxels/
1•2sf5•15m ago•0 comments

Plausible – Find the definition of an obscure word among fake definitions

https://plausiblegame.com/en
1•alexdobrenko•18m ago•0 comments

How Does Truffle Taste? Strategic Lessons for Introducing Agentic Engineering

https://www.robert-glaser.de/the-elastic-loop-introducing-agentic-engineering-strategically/
1•youngbrioche•18m ago•0 comments

Show HN: AI Seedance 2 – Solving the "jump-cut" problem in AI video

https://www.aiseedance2.app
1•TurnItOffAndOn0•18m ago•0 comments

Twenty Five Percent Without Thinking

https://fakepixels.substack.com/p/twenty-five-percent-without-thinking
1•dmonay•19m ago•0 comments