The Department of Mathematics at the College of Science held a seminar titled "Approximation by Sequences of Positive Linear Operators," presented by postgraduate student Hafiz Aboud. This seminar presents a structured introduction to the approximation of continuous functions by sequences of positive linear operators. Starting from the Bernstein polynomials on [0, 1] and the Weierstrass approximation theorem, we follow their extension to the infinite interval [0, ∞) through the Szász–Mirakjan operators and their Kantorovich-type integral variants, and we review the historical development of weighted, Stancu-type, parametric and function-preserving modifications.