Strata Mundo

Strata Mundo — your math mastery voyage Most math tools tell you a percentage. Strata Mundo tells you how a learner reasons. A learner builds fractions by dragging brass pieces onto a target — every drag, removal, and reset is recorded as process telemetry. Claude Opus 4.7 reads the full trajectory and produces a categorical mastery map per CCSS standard: mastered, building the skill, misconception detected (with the specific named wrong mental model and traceable evidence), or not yet probed. Never percentages. A Plan Architect Managed Agent then synthesizes a tailored plan: 2–3 activities per gap, drawn from a curated multimodal library, sequenced concrete → representational → abstract. The library grows from contributions. Anyone — guides, parents, teachers, learners themselves — can submit a new activity. Every submission is reviewed by Opus 4.7 against six published pedagogical criteria, then by a human. Criteria are public on the methodology page. Built solo in 4 days for the Cerebral Valley Built with Opus 4.7 hackathon. Live at stratamundo.com. Everything user-facing — home, methodology, contribute, search, voyage, report — uses Opus 4.7 as the substantive reasoning engine. Categorical, never numeric. Misconception-named, never vague. Community-grown, AI-vetted, human-approved.