Tinkercad is a free web application by Autodesk for 3D design, electronics, and coding. It allows users to create files for 3D printing in a short time. The term "tinkering" in the ScienceCenter network is translated as "playing around" or "technical building." This article explores whether Tinkercad can be used to teach geometry content in school and to develop students' spatial visualization skills. The article first outlines the characteristics of a CAD package suitable for school geometry education. It then introduces the basic functions of Tinkercad through introductory examples and highlights its limitations. The criteria for evaluating CAD software in the classroom are based on geometric content, including the ability to analyze and describe geometric objects, create different representations, and recognize and describe object shapes. Tinkercad is highlighted as a user-friendly and cost-free entry point into 3D modeling, but its capabilities are limited compared to more advanced CAD software. While it can be used for basic tasks like creating simple geometric shapes and basic Boolean operations, more complex tasks such as intersection and spatial transformations are more challenging. The article concludes that while Tinkercad can be a motivating introduction to 3D modeling, it may not cover all the competencies required for more intensive geometry education. Keywords: Tinkercad, CAD software, spatial geometryTinkercad is a free web application by Autodesk for 3D design, electronics, and coding. It allows users to create files for 3D printing in a short time. The term "tinkering" in the ScienceCenter network is translated as "playing around" or "technical building." This article explores whether Tinkercad can be used to teach geometry content in school and to develop students' spatial visualization skills. The article first outlines the characteristics of a CAD package suitable for school geometry education. It then introduces the basic functions of Tinkercad through introductory examples and highlights its limitations. The criteria for evaluating CAD software in the classroom are based on geometric content, including the ability to analyze and describe geometric objects, create different representations, and recognize and describe object shapes. Tinkercad is highlighted as a user-friendly and cost-free entry point into 3D modeling, but its capabilities are limited compared to more advanced CAD software. While it can be used for basic tasks like creating simple geometric shapes and basic Boolean operations, more complex tasks such as intersection and spatial transformations are more challenging. The article concludes that while Tinkercad can be a motivating introduction to 3D modeling, it may not cover all the competencies required for more intensive geometry education. Keywords: Tinkercad, CAD software, spatial geometry