Package Included: you will receive 29 magnetic number line bulletin boards marked with numbers from -20 to 120 and are magnetic for easy sticking; This chalkboard bulletin board border are divided into multiple sections and are easy to stick on, making them a learning tool for students of any age and grade, suitable for math education needs -20 To 120 Large Number Line: each section of the Magnetic number line wall decoration measures approximately; 9.1 x 2.56 inches, while including 1 section of the number ''0'' measures approximately; 1.77 x 2.56 inches, a large number that is big enough to be seen throughout the entire room, and bright colors number line clearly shows negative and positive numbers, This number line is suitable for your classroom decor Strong and Sturdy: the Magnetic number line are made of card stock paper with laminated surface, strong for long time use and waterproof, they can be written on with dry erase markers and wiped off, can be applied many times, and the number line come with magnetic, easily display on your bulletin board, whiteboard, doors, walls and desk and easy to reposition