Addition and Subtraction Practice: Interactive Random Number Drills with Geometr

① This example demonstrates an interactive drill for addition and subtraction, where randomly generated numbers are paired with polygon shapes to create a visual learning experience. ② Core math concepts include integer addition and subtraction, random number generation, linear functions (used to position points), and basic statistical characteristics such as the median, with binomial distribution as an extended context. ③ Construction highlights: Using GeoGebra commands such as Textfield, Random, Element, Polygon, Point, Corner, SelectedIndex, and If, the applet creates multiple points (A, B, C, D, etc.), polygons (poly1, poly2, poly3), an input box (InputBox1), a button (button1), and lists (list1, list2, list3). Random elements from lists generate problems, and the If command checks answer correctness. ④ Suitable for early elementary students practicing arithmetic, and for teachers building interactive lessons that combine numerical operations with geometric visualization, fostering an intuitive understanding of both math domains.