Interactive Divisibility Tests for 2, 3, and 5

This GeoGebra example demonstrates the divisibility tests for 2, 3, and 5 in an interactive practice format. Randomly generated questions prompt learners to decide whether a given integer satisfies the corresponding rule. The key mathematics includes divisibility (divisibility criteria), the relationship between factors and remainder, and practical digit-based tests: checking the last digit for 2 and 5, and using the sum of digits for 3. Construction-wise, the app relies on GeoGebra commands like Random and RandomElement to generate numerical elements (e.g., variables such as p1n1 and other parameters) and uses geometric/interface objects (A–F, polígono1/polígono2) together with feedback controls (Yes/No buttons) to provide immediate correctness evaluation. It also tracks outcomes using counters such as aciertos/fallos and displays “right/wrong” messages. Suitable for middle-school math classes, guided practice, and self-study to strengthen integer properties through quick, testable criteria.