The Cards for Geometric Demonstration Tray material consist of nine cardboard cards with circles, squares and triangles in thin line, thick line and solid shapes.  The cards are white with the image printed in dark blue, and the image face has a light gloss coat making them easy to wipe clean.  The cards measure 14 x 14 cm each and are typically used in conjunction with the Geometric Demonstration Tray.  The cards can be stored in the Card Cabinet (sold separately).