Add learning-by-doing topic

topics/learning-by-doing/index.md

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+---
+aliases:
+display_name: Learning by Doing
+short_description: Learn skills through hands-on practice, real-world experience, and active problem solving.
+topic: learning-by-doing
+wikipedia_url: https://en.wikipedia.org/wiki/Learning-by-doing
+---
+
+Learning by doing is an educational approach that emphasizes gaining knowledge and practical skills through direct experience instead of passive instruction. Developers often use this approach by building projects, experimenting with code, solving real-world problems, and learning from mistakes. It is widely used in programming, software development, engineering, design, and many other technical fields because it encourages active participation and continuous improvement.