Percentage of an Amount (10%) – Interactive Visual

① This GeoGebra example dynamically demonstrates how to calculate 10% of a given amount, turning the abstract concept of percentage into a tangible visual operation. ② The core mathematical concept is percentage, involving proportional reasoning, fraction-decimal equivalence, and basic arithmetic. ③ Construction highlights: uses Polygon to build base shapes, Segment to partition regions, Textfield for user input, Midpoint for positioning, and Random to generate varied data; objects include multiple points (A, B, C, D, etc.), polygon poly1, segments (q, r, s, t, etc.), and functions (f, g, h, etc.), creating an interactive interface that visualizes the 10% calculation. ④ Suitable for upper primary to lower secondary students, ideal for introductory lessons on percentages, and useful as a classroom demonstration tool to help learners grasp the practical meaning of 'finding a percentage of a quantity'.