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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

AI agent designs a complete RISC-V CPU from a 219-word spec sheet in 12 hours

https://www.tomshardware.com/tech-industry/artificial-intelligence/ai-agent-designs-a-complete-ri...
1•fork-bomber•2m ago•0 comments

How drones could be used to track plastic litter on Irish beaches

https://www.rte.ie/brainstorm/2026/0424/1569594-ireland-beaches-plastic-pollution-litter-drone-fo...
1•austinallegro•6m ago•0 comments

Show HN: Daily China AI news briefing – engineering, product, and business

https://overnightai.substack.com/p/china-ai-news-eight-chinese-chip
1•jackyli02•7m ago•0 comments

Ask HN: I built an AI planner that adapts routines automatically – feedback?

1•Profazia•12m ago•0 comments

FDA gives the green light to the first gene therapy for deafness

https://www.npr.org/2026/04/23/nx-s1-5795526/deafness-gene-therapy-regeneron
1•geox•12m ago•0 comments

Wisp – Social that's fun again

https://wisp.mobile
2•janandonly•13m ago•0 comments

Wikipedia's AI Policy

https://en.wikipedia.org/wiki/Wikipedia:Artificial_intelligence
4•Antibabelic•16m ago•0 comments

Kremlin's tightening grip on internet fuels Russian discontent

https://www.bbc.com/news/articles/cr510de17jlo
1•breve•18m ago•0 comments

Mathesar 0.10.0

https://docs.mathesar.org/0.10.0/releases/0.10.0/
1•klaussilveira•19m ago•0 comments

Mounting tar archives as a filesystem in WebAssembly

https://jeroen.github.io/notes/webassembly-tar/
3•datajeroen•19m ago•0 comments

Impactmel Is Available

https://impactmel.com
1•pndize•20m ago•0 comments

Hidden Secrets in the ArXiv: Information Disclosure in Preprint Source Files

https://arxiv.org/abs/2604.20927
1•bageldesert•21m ago•0 comments

Ask HN: What sw do you dream about but don't have the time to code yourself?

1•curtisblaine•24m ago•1 comments

Artificial intelligence is creeping into American lawmaking

https://www.economist.com/united-states/2026/04/23/artificial-intelligence-is-creeping-into-ameri...
1•edward•24m ago•0 comments

Ask HN: Am I getting old, or is working with AI juniors becoming a nightmare?

3•MichaelRazum•25m ago•2 comments

Ask HN: Who is using DeepSeek in production

2•h99•25m ago•0 comments

DeepSeek-V4: Making 1M token context efficient

https://firethering.com/deepseek-v4-open-source-million-token-context/
2•steveharing1•25m ago•0 comments

OpenAI has the governance structure of a unicorn – it does not exist

https://readuncut.com/open-ai-has-little-effective-governance/
1•dnsb•27m ago•0 comments

Half a Month of Consolation Writing Advice

https://www.astralcodexten.com/p/half-a-month-of-consolation-writing
1•herbertl•29m ago•0 comments

How to Make Sense of AI

https://commoncog.com/how-to-make-sense-of-ai/
2•dnnddidiej•32m ago•0 comments

Seed3D 2.0

https://seed.bytedance.com/en/seed3d_2_0
1•pella•32m ago•0 comments

Why software fundamentals matter more than ever [video]

https://www.youtube.com/watch?v=v4F1gFy-hqg
1•zingar•34m ago•0 comments

The global edtech boom is fading as investors look elsewhere

https://restofworld.org/2026/edtech-funding-collapse-k12-startups-ai-workforce/
1•thm•34m ago•0 comments

Removal of Microplastics from Drinking Water by Moringa Oleifera Seed

https://pubs.acs.org/doi/10.1021/acsomega.5c11569
2•fodmap•35m ago•0 comments

AI Agent Designs a RISC-V CPU Core from Scratch

https://spectrum.ieee.org/ai-chip-design
2•pseudolus•39m ago•0 comments

Facts versus Understanding

https://www.solipsys.co.uk/ZimExpt/FactsVersusUnderstanding.html?zd24hn
2•ColinWright•39m ago•1 comments

US accuses China of "industrial-scale" AI theft. China says it's "slander"

https://arstechnica.com/tech-policy/2026/04/us-accuses-china-of-industrial-scale-ai-theft-china-s...
7•jnord•42m ago•0 comments

Electrostatics and High Voltage Links

http://amasci.com/static/electrostatic1.html
1•ludicrousdispla•45m ago•0 comments

Cohere and Aleph Alpha Merger

https://www.nytimes.com/2026/04/24/business/cohere-aleph-alpha-ai-merger.html
3•warthog•45m ago•0 comments

Spectro – macOS app to detect fake lossless audio files

https://www.getspectro.app
3•ddtcx•50m ago•0 comments