Recent Updates

April 30, 2026 — Data Preparation Review

Several course modules were revised with clearer explanations of schemas, column types, missing values, and table inspection. Additional examples were added to show how preparation decisions affect later calculations and summaries.

May 22, 2026 — Workflow and Join Materials

The curriculum received new diagrams for joins, key relationships, and multi-stage Polars workflows. Practice activities were also refined to provide wider spacing, clearer instructions, and more structured review points.

July 30, 2026 — Curriculum Expansion

The full course collection was expanded with detailed modules, practical labs, reference pages, capstone assignments, and completion materials. Course maps and visual comparison pages were also revised for clearer navigation and consistent presentation.