Evenly Divided Integers of 'a'

① This example demonstrates how to explore the divisibility properties of an expression 'a' by a set of integers (e.g., 1, 1.35, 2, ...), using a visual GeoGebra construction. ② Core mathematical concepts include integer divisibility, integer solutions, algebraic expressions, and uniform division of numbers, with connections to calculus, trigonometry, and similarity transformations. ③ Construction highlights: from the summary, objects A, B, and pic1 are used, likely involving points or sliders to dynamically vary parameters and display how divisibility changes, with graphical representations of the numerical relationships. ④ Suitable for high school to undergraduate mathematics education, particularly for introductory number theory, algebraic thinking, and classroom demonstrations with GeoGebra.