# Book Metrics

> This file contains overall metrics for the intelligent textbook.

- Skill: `tools-only/book-metrics` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/book-metrics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/book-metrics/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-29
- Page: https://skillmd.com/skills/tools-only/book-metrics

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# Book Metrics

This file contains overall metrics for the intelligent textbook.

| Metric Name | Value | Link | Notes |
|-------------|-------|------|-------|
| Chapters | 14 | [Chapters](../chapters/index.md) | Number of chapter directories |
| Concepts | 200 | [Concept List](./concept-list.md) | Concepts from learning graph |
| Glossary Terms | 205 | [Glossary](../glossary.md) | Defined terms |
| FAQs | 66 | [FAQ](../faq.md) | Frequently asked questions |
| Quiz Questions | 140 | - | Questions across all chapters |
| Diagrams | 77 | - | Level 4 headers starting with '#### Diagram:' |
| Equations | 171 | - | LaTeX expressions (inline and display) |
| MicroSims | 36 | [Simulations](../sims/index.md) | Interactive MicroSims |
| Total Words | 284,101 | - | Words in all markdown files |
| Links | 976 | - | Hyperlinks in markdown format |
| Equivalent Pages | 1173 | - | Estimated pages (250 words/page + visuals) |

## Metrics Explanation

- **Chapters**: Count of chapter directories containing index.md files
- **Concepts**: Number of rows in learning-graph.csv
- **Glossary Terms**: H4 headers in glossary.md
- **FAQs**: H3 headers in faq.md
- **Quiz Questions**: H4 headers with numbered questions (e.g., '#### 1.') or H2 headers in quiz.md files
- **Diagrams**: H4 headers starting with '#### Diagram:'
- **Equations**: LaTeX expressions using $ and $$ delimiters
- **MicroSims**: Directories in docs/sims/ with index.md files
- **Total Words**: All words in markdown files (excluding code blocks and URLs)
- **Links**: Markdown-formatted links `[text](url)`
- **Equivalent Pages**: Based on 250 words/page + 0.25 page/diagram + 0.5 page/MicroSim