Master early geometry skills while making cool pictures and solving STEM challenges! These 20 double-sided design cards come with 40 progressive challenges that grow with your kids' skills while mixing art and STEM! Kids won't jus be crafting the next masterpiece - they'll also be learning everything from following directions and color recognition skills to math and geometry fundamentals like shape identification, patterning, and 2D design. Cards measure 8½" x 11".