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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/

3pm – A private desktop calendar for people living with a mental disorder

https://3pm.ninja/
1•adamhott•1m ago•0 comments

A zero-dependency auditor for AI agent exposure (secrets, SSH, configs)

https://ai-agent-antivirus.space/
3•JohnMci•3m ago•0 comments

The campaign to push the Northstar browser into Linux distributions

https://lwn.net/SubscriberLink/1102738/e124c97f934a717e/
2•12_throw_away•3m ago•0 comments

Show HN: A Prolog-powered reverse WAF logic perimeter with SIMD acceleration

https://prologwaf.site/
1•lokinpendawa•6m ago•0 comments

Major Updates to Cloudflare Observability

https://blog.cloudflare.com/one-observability-platform/
1•thatslast•9m ago•0 comments

Latency, energy and memory of π0.5, GR00T, SmolVLA and more on Jetson boards)

https://ixian.zetic.ai/models/compare
2•kimys1324•10m ago•0 comments

Samenland – Plant a Seed. Watch It Grow

https://samenland.app/#
1•doener•12m ago•0 comments

More Math, Less Ego – Erik Demaine [video]

https://www.youtube.com/watch?v=Gdc1yll04qI
2•nill0•13m ago•0 comments

Remembering a Rare Thaw in the Cold War

https://maritime-executive.com/editorials/operation-breakthrough-remembering-a-rare-thaw-in-the-c...
1•gone35•13m ago•0 comments

Ask HN: Nepal Government wants Google Play Merchant access for its Developers

1•njsubedi•13m ago•0 comments

How is life at different levels of GDP per capita?

https://ourworldindata.org/data-insights/how-is-life-at-different-levels-of-gdp-per-capita
1•alphabetatango•16m ago•0 comments

Electronic fibers weave touchscreen into sleeve that survives machine washing

https://www.designboom.com/technology/electronic-fibers-touchscreen-sleeve-machine-washing-nation...
2•thunderbong•18m ago•0 comments

N-gram hinted language modeling: NanoGPT Speedrun in 6.7s

https://brunborg.com/n-gram-hinted-lm
1•simonpure•18m ago•0 comments

Historic records of exports Russian petrolium products including AGIOI FANENDES

https://www.blackseanews.net/en/read/223706
2•paaloeye•18m ago•0 comments

BlueChip

https://www.anduril.com/bluechip
1•bookofjoe•20m ago•1 comments

Natural Emergent Misalignment from Reward Hacking in Production RL [pdf]

https://www-cdn.anthropic.com/daad4360a8bdc707f8b22e3e745796ba27e57fb3.pdf
1•espeed•23m ago•0 comments

Opera adds local AI to its browsers

https://press.opera.com/2026/10/27/opera-doubles-down-on-local-ai-shipping-models-directly-in-its...
1•simonpure•29m ago•1 comments

Princeton to provide ChatGPT accounts for all students, faculty, staff

https://www.dailyprincetonian.com/article/2026/10/princeton-news-breaking-adpol-princeton-to-prov...
1•seam_carver•29m ago•0 comments

World Models explained in 7 mins

https://www.youtube.com/watch?v=d79HOo1fUhc
1•lroe•31m ago•0 comments

Oldest customer complaint in recorded history

https://en.wikipedia.org/wiki/Complaint_tablet_to_Ea-n%C4%81%E1%B9%A3ir
2•jameslk•32m ago•0 comments

Git for All Global Law

https://github.com/lexifina/global-law
1•alansaber•34m ago•1 comments

OpenAMRobot

https://github.com/openAMRobot
1•gmays•37m ago•0 comments

Microsoft Azure revenue surges 48% to $33.2B, beating expectations

https://www.geekwire.com/2026/microsoft-azure-revenue-surges-48-to-33-2b-beating-expectations-as-...
1•RoadieRoller•47m ago•0 comments

GPU or PSU coil whine: a test log and 47 owner reports across 44 models

https://techfuelhq.com/articles/gpu-or-psu-coil-whine/
1•LKWOODIV•50m ago•0 comments

Congo's Ebola outbreak tops 10k cases as authorities race to slow the spread

https://www.nbcnews.com/world/africa/congos-ebola-outbreak-tops-10000-cases-authorities-race-slow...
3•gmays•52m ago•0 comments

I made a web app for navigating the Bible

https://theamazingword.org/
1•_enjoi•53m ago•1 comments

Local Inference with Large Language Models

https://jacquesmattheij.com/local-inference-with-large-language-models/
1•jacquesm•53m ago•1 comments

Show HN: Linesofrelief] – Opinionated contour map in Rose Pine

https://linesofrelief.ink/
1•cjododev•53m ago•0 comments

Apple's New Touchscreen MacBook Pro Costs Up to $14,549

https://www.macrumors.com/2026/10/28/new-macbook-pro-maxed-out-cost/
6•sumnole•54m ago•1 comments

Rian Johnson has released an iOS camera app

https://twitter.com/rianjohnson/status/2115436064458621189
1•brzz•55m ago•1 comments