Practice with Positive and Negative Numbers: Number Line & Signed Arithmetic

This example demonstrates how positive and negative numbers are represented on a number line and how the sign directly affects addition and subtraction results. It centers on key ideas such as the meaning of the plus/minus sign, ordering and relative position on the number line, and the signed arithmetic rules (e.g., same-sign addition/contrast with opposite-sign subtraction as a comparison of direction and magnitude). The provided construction summary contains no GeoGebra commands, so the construction details cannot be extracted at the command/object level; however, the typical graphing focus is to build a number line with equal tick marks, place labeled points for several given signed values, and show that the computed result corresponds to the landing point on the same line—thereby validating the operational rules. Suitable for middle-school learners and early math tutoring, it works well for guided practice, concept reinforcement, and interactive review.