This trial class focuses on introductory 3D modeling and core modeling operations. It runs for three to five hours and is designed for beginners, using the Tinkercad web app as the primary tool. We start with an intuitive comparison between 2D and 3D, helping children understand models, scale and units, and the X/Y/Z axes. They will get familiar with viewport navigation on the workplane, using the Ruler for measurements, setting the Workplane, and basic operations such as placing, moving, and rotating objects. With these foundations, each child guided by the instructor will create their own 3D project: a simple ring. The instructor will demonstrate how to prepare and start the print, and during printing the student will observe the process up close, learning the end-to-end pathway from digital model to physical object, including slicing, first-layer adhesion, layer-by-layer building, cooling, and part removal, along with related safety notes. By the end of the session, the child will take home their 3D-printed ring and will have mastered the modeling steps and printing workflow covered in class.