These interactive self-checking math flashlight cards are an engaging geometry activity that has students count the sides on basic, flat / plane 2D shapes. This set includes 16 different 2-D shape cards (equilateral triangle, rectangle, circle, pentagon, square, oval, octagon, crescent, trapezoid, hexagon, parallelogram, diamond, right-angled triangle, heart, star, and a moon). These are a perfect addition to your Flashlight Friday activities.PREPARE: Print the picture cards onto cardstock and t