Help students grasp and reinforce the concept of opposites with these full-color, high-interest flash cards. Every set includes instructions and tips for the teacher or parent, along with suggested activities. Each card has a hole in the top corner for use with a ring or string to help with organization and storage. Additionally, each card has one corner that is shaped differently than the others. By lining up the non-rounded corners, the flash cards can quickly be faced in the same direction. Each card measures 3⅛" x 5⅛". 56 double-sided cards per pack.