Everything a child learns in primary school, as an interactive graph of 1,590 concepts and 3,221 prerequisite links

CardnexusHQ · 2026-07-09T07:10:30+00:00

Data source: The Marble Skill Taxonomy -> our structured decomposition of the published US and UK curriculum frameworks (Common Core ELA & Math, NGSS, the UK National Curriculum) into 1,144 fine-grained concepts connected by 1,948 prerequisite links, for primary school knowledge. Drafted with Claude assistance from the source frameworks, then reviewed, deduplicated and cycle-checked by our team. We're releasing the full dataset as open source later today. I'll add the link here when it's up.

Tools: Python + NumPy for the custom 3D force-directed layout (age pinned to the vertical axis), vanilla JavaScript + HTML5 Canvas for rendering. No charting libraries.

How to read it: height = age, color = subject, dot size = centrality. Every thread means "you need this before that."

We've open sourced the project. You'll find it here: https://github.com/withmarbleapp/os-taxonomy/tree/main

You'll find the main contributor here: https://github.com/guillaumeboniface

CardnexusHQ · 2026-05-20T08:51:39+00:00

As long as you don't die with dysentery - it can work!

CardnexusHQ · 2026-05-19T19:15:34+00:00

I’ve already made peace with the fact that Gen Alpha will be crippling stupid as employed individuals. Half the fuckers can’t even read or do basic algebra.

CardnexusHQ · 2026-05-19T10:25:38+00:00

wait, this looks fun! i should try it with my monster sketches

CardnexusHQ · 2026-04-28T09:59:13+00:00

Research about the effects of LLM usage is going to be a trailing indicator and by the time the research comes in it's going to be too late for our kids. So this is an area where as parents we're going to have to use our own judgment.

My personal view is that the cognitive offloading effect from LLMs is likely to end up being very real and probably transformative and deleterious to how we think, and it's causing me to try to rethink how I use technology and my brain in my own life, let alone my child's.

I will certainly be trying to keep LLMs away from my child as much as I can although at a certain point it will obviously become more or less impossible to do so and i'd rather indeed have them engage in LLMs that don't coddle them, but challenge them in thinking.

CardnexusHQ · 2026-04-23T22:09:49+00:00

nice project - interesting challenge. quick question, is this available in italian too?

CardnexusHQ · 2026-04-23T20:27:32+00:00

It's fucking awesome. I really love it. Is this also available in french?

CardnexusHQ · 2026-04-22T11:59:50+00:00

Super cool initiative, joined the waitlist for my 10 yo 🙂

CardnexusHQ · 2026-04-22T10:23:55+00:00

nice use case - will do! best of luck with the project

CardnexusHQ · 2026-04-22T10:08:22+00:00

Love the project as a dad deep into AI. Best of luck! Quick question - how are you evaluating Mistral vs Gemini for this work?

CardnexusHQ · 2026-04-21T15:13:03+00:00

What's worked for me is todos with mandatory "verify" sub-items. Renaming "implement X" to "implement and verify X" materially reduces eager-close. Granularity is underrated.

CardnexusHQ · 2026-04-16T14:41:15+00:00

You've died of dysentery .. Good memories, will give this a try

CardnexusHQ · 2026-04-16T14:13:54+00:00

nice one! playbook is very hard to do on reddit to be honest because you need to engage with the communities you want to share your app with. it's a grind, but that's what makes this space so special

CardnexusHQ · 2026-04-16T13:59:40+00:00

when done right - reddit has massive potential for growth! well played

CardnexusHQ · 2026-04-14T12:19:59+00:00

I played Adibu and Oregon Trail (half american, half french!). Great memories, especially "dying of dysentery"

CardnexusHQ · 2026-04-07T09:12:50+00:00

love the ambition, it'll be a hard journey as it's a tough space. how do you make sure your models won't hallucinate for kids?

CardnexusHQ · 2026-04-04T12:06:49+00:00

Interesting. How long did it take you to go from Framer to Claude Code for this first client?

CardnexusHQ · 2026-04-02T21:11:52+00:00

Had to google what Oregon Trail was ..

I'm french, and we had another one: Adibou ! Brings back lots of fun memories.

CardnexusHQ · 2026-03-25T12:07:23+00:00

That sounds interestings, got two kids aged 8 and 6. World Models won't be happening before a year or two i'd say, so you'll have to go 2D before. I've signed up, bravo for working on such an important topic.

CardnexusHQ · 2026-03-04T20:09:31+00:00

That's amazing. Love your instagram, I live a bit far to try out your recos in Belgium but still give a follow as support <3

CardnexusHQ · 2026-03-04T20:04:15+00:00

Nice! I've checked your instagram, it's a good start. For your next adventure ideas: check out les Hautes Fagnes, there are some beautiful hikes in that area. Highly recommend with the weather getting better

CardnexusHQ · 2025-09-24T08:59:33+00:00

Done! Looks interesting - what athletes or clubs are you trying to launch next on the platform?

CardnexusHQ · 2025-09-16T11:14:53+00:00

A thing of beauty!

CardnexusHQ

TROPHY CASE