Shading Venn Diagrams (1)

This interactive GeoGebra example is a remake of an earlier Venn diagram shading exercise, designed to help students visualize set operations such as union, intersection, and difference by shading appropriate regions within two overlapping circles (sets A and B) inside a universal set rectangle (U). The core mathematical concepts involve set theory, basic set operations, and the partition of the universal set into distinct regions. The construction uses GeoGebra commands including Segment, Polygon, Corner, If, Element, and Length to build the diagram and control dynamic coloring. The object list includes boolean variables (IsGreen1–IsGreen4) and color components (RB1, G1, etc.) that enable interactive feedback as users select regions to shade. This resource is suitable for middle school through high school mathematics, particularly for teaching set theory, logic, and introductory probability, as it provides a hands-on way to explore how different set operations correspond to visual areas in a Venn diagram.