Help your students master the area formulas of 2D shapes with this clear and visually engaging set of posters and flashcards. Perfect for whole-class lessons, math centers, interactive notebooks, and visual learners. This resource is also ideal for upper elementary, middle school, special education, and intervention settings. This printable PDF includes: 1 A3 reference poster showing all area formulas (Square, Rectangle, Triangle, Rhombus, Parallelogram, Trapezoid, Circle, and Regular Polygons