Help students learn essential 2D and 3D shapes, along with colors, with these flash cards. Every set contains a collection of full-color, high-interest student cards as well as instructions and tips for the teacher or parent, suggested activities, and additional blank cards. 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.