What are BOOM CARDS? Boom cards are completely digital and self-checking! Boom Cards will play on computers, chromebooks, and tablets. After you check out, please download the product to get instructions and to get a link to the Boom Card deck. This is NOT a printable resource.These BOOM CARDS feature these two and three dimensional shapes: circle, square, triangle, rectangle, hexagon, oval, diamond, cube, cone, sphere, cylinder, pyramid, and rectuangular prism. Students will identify 2D or 3