This set of 16 .pdf letter-sized digital prints is designed to show and explain some of the more famous unsolved problems in math.Each poster presents a different unsolved problem, such as the Twin Prime Conjecture, as well as a visual and a description of the mathematics involved.This collection serves as both an educational tool to support STEM education and a visually engaging way to decorate your classroom or bulletin board. Ideal for teaching, inspiring, and engaging students in mathematic