Games use skill trees to show what unlocks what, and childhood works the same way: crawling comes before walking, and first words come before reading. This prototype maps foundational skills in eight branches, from movement and language to math, life skills, water safety and tech, as a prerequisite graph laid out by age from infant milestones to the teen years.
Early milestones follow the CDC's 2022 checklists as guidance rather than deadlines, and the tree highlights which skills are ready next. There are no accounts or analytics: progress stays in the browser's localStorage, and adding ?demo to the URL shows fictional sample data.