Marble Skill Taxonomy
Marble Skill Taxonomy pairs 1,861 micro-topics and a prerequisite graph with a marble-builder skill for child activities.
- 7,681 ★ on the repository
- Last commit
- ODbL-1.0
Minimal access
Why this level
- The skill opens the generated HTML page in a browser and may search the web for sources.
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add skills/marble-skill-taxonomyDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewMinimal accessThe tool runs nothing and makes no network calls.
- The skill opens the generated HTML page in a browser and may search the web for sources.
This is third-party code. Review the repository files before installing.
What it does
The repository gives an agent an open taxonomy of primary education: 1,861 micro-topics, 4,003 dependency edges, alignment to standards (NGSS, Common Core, the UK National Curriculum and others), 1,049 teaching research records and 176 parent-friendly summaries. Data sits in `data/` as JSON with schemas in `schema/`. The `marble-builder` skill in `.agents/skills/marble-builder` runs a short conversation with an adult: the child's age, the learning goal, concept approval. The agent then draws on the taxonomy's topics and prerequisites, builds a standalone HTML file with an activity and a check of understanding, opens it in a browser, inspects and revises it. Child-facing copy is written in the child's language.
Who it is for. Parents and teachers with an agent who need an interactive page for a primary school child on a specific topic, such as equivalent fractions.
Good fit when
- A parent asks for a fractions game for an eight-year-old.
- A teacher looks up which topics precede the chosen one to find a gap.
- An edtech developer matches topics to curriculum standards.
- A course author builds a lesson sequence from the prerequisite graph.
Not a fit when
- You need an assessment of a specific child with a conclusion about level.
- You need material for upper grades, which the taxonomy does not cover.
- Methodology references would be taken as proven effectiveness.
Example request
Use marble-builder to help my 8-year-old understand why equivalent fractions represent the same quantity.Limitations
Data is multi-licensed: the database under ODbL 1.0 and content under CC BY-SA 4.0, so read the License section before using it in a product. Research covers 1,049 topics and leaves 812 without. Standards alignment does not show a child has mastered a topic. Records were largely agent-authored with a second agent's check, as the README states. The skill builds HTML pages rather than assessing a child, so keep personal details out of prompts.
How to disable. Remove the `.agents/skills/marble-builder` folder from the project it was attached to, or the cloned repository itself. Generated HTML files are stored separately; delete them manually.
FAQ
Is a Marble account required?
No. No account or hosting is required: the skill works locally and the agent produces a standalone HTML file.
How do I run it in Codex?
Open the cloned repository in Codex and invoke `$marble-builder`, for example with a request about equivalent fractions for an eight-year-old.
What is the data license?
The database is ODbL 1.0 and the content CC BY-SA 4.0. Read the License section of the README before building a product: the terms differ for the database and the text.
What does the taxonomy contain?
1,861 micro-topics across nine subjects, 4,003 dependency edges, standards alignment and domain summaries. 812 topics have no teaching research yet.
Can I use only the data without the skill?
Yes. `data/topics.json`, `dependencies.json` and `curriculum-standards.json` can be read by any code; mind the ODbL 1.0 and CC BY-SA 4.0 licenses.
Discussion
No questions or reviews yet.
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README in short
The taxonomy provides topic and prerequisite links, and the skill avoids a canned template: questions, goal and concept first, then building and checking in a browser.