Carl's Airship - Addition and Subtraction of Negative Integers

① This example presents an interactive airship animation called 'Carl's Airship' to model the addition and subtraction of negative integers in a real-world context, helping students grasp abstract operations through visual height changes. ② The core mathematical concepts are operations with negative integers, including rules like adding two negatives, subtracting a positive from a negative, and subtracting a negative (which becomes addition), all represented by the airship's vertical movement (up as positive, down as negative). ③ Construction details: Based on the summary, the GeoGebra construction uses commands such as Point, Segment, Intersect, and Polygon, along with multiple buttons (button1, button2, etc.) and text objects (text1-text7) to control the airship's motion and display step-by-step calculations, making it a fully interactive dynamic model. ④ This resource is suitable for upper elementary to middle school students learning integer operations, and can be used by teachers for classroom demonstrations or by students for self-paced exploration to build number sense and operational intuition.