Number Line Subtraction Demo

This example visually demonstrates subtraction operations on a number line. It involves core math concepts like number lines, subtraction, vectors, and line segments. Construction highlights include using commands like Vector and Segment to create objects such as a, b, C, D, and constructing points A, C_1, A_1. Suitable for middle school mathematics teaching to help students understand the geometric meaning of subtraction and its application on number lines.