Quiz: Geometric Visualization of Integer Subtraction with Vectors

This example presents an interactive quiz that visualizes how subtracting integers can be understood as changes in displacement—direction and magnitude—using geometry. The key math ideas include integers with sign (positive/negative meaning), vectors as directed quantities, and transformation-based interpretation (notably mirroring to represent sign reversal). Construction-wise, it leverages GeoGebra commands such as Point to define key geometric locations, Random to generate varying quiz parameters, Vector to represent the directed steps corresponding to the operands, Textfield (and related input elements like InputBox1) to display prompts/answers, and Mirror to implement the opposite-direction or equivalent sign change via symmetry. The scene includes multiple points (e.g., A, B, C, D and related points) and vector objects (e.g., u, v), along with button controls (button1, button2) for running the quiz and checking responses. Suitable for middle school to early high school, and for classroom activities linking arithmetic with vector/geometry construction.