Foam board is a lightweight, rigid material ideal for mounting photos, presenting school projects, and creating signage

https://andylzeh812.cavandoragh.org/10-creative-ways-to-use-foam-board-for-school-projects-easy-affordable-and-standout-ideas-2

Foam board is a lightweight, rigid material ideal for mounting photos, presenting school projects, and creating signage, offering clean cuts, smooth surfaces, and easy customization with paints, markers, or adhesive vinyl.