Block coding and text coding are two approaches to programming that cater to different needs and skill levels.  Block coding serves as a very good way to introduce coding and coding concepts to young students.  It also enables them to more easily grasp the logic of coding.  Block coding uses a visual interface where users drag and drop pre-defined code blocks to create programs.  It is beginner-friendly and ideal for young students.  Block coding enables students to focus on logic and problem-solving without worrying about complex code structures.  However, block coding is a little limited as it doesn't allow you to create very advanced programmes. 

Text coding, involves writing code line-by-line in programming languages like Python or JavaScript.  It is more challenging, however, you can build more complex and sophisticated programmes with text coding as opposed to block coding.  While text coding is powerful, it requires understanding syntax and debugging, which can be challenging for beginners.

So, block coding introduces foundational concepts in an engaging and accessible way, while text coding gradually builds deeper technical skills as students grow more confident.