Subtracting Integers on a Number Line

① This example visually demonstrates integer subtraction on a number line using vector arrows, showing how subtraction corresponds to moving left or right along the line. ② The core mathematical concept is integer subtraction and its geometric interpretation through direction, distance, and vectors, reinforcing the rule that subtracting a number is equivalent to adding its opposite. ③ Construction highlights: The GeoGebra Vector command is used to create vector objects (A, B, A_1, B_1, u, v, w, C), where each vector's start and end points define its length and direction, representing the minuend, subtrahend, and difference clearly on the number line. ④ Suitable for upper elementary to middle school students learning integer operations, and useful for classroom demonstrations or self-guided exploration to build intuitive understanding of negative numbers.