Get your brain in shape with these STEM puzzle challenges! Kids solve brain-teasing puzzles that test their knowledge of shapes, critical thinking, fine motor skills and more every time they play with STEM Explorers Brainometry! Explore this set's 10 STEM challenge cards for critical thinking puzzles that turn shape pieces into the 2D and 3D building blocks of victory! Manipulate six different shape pieces into solutions that require a keen eye for stacking, sorting and geometry. As kids solve the secrets of the shapes, they'll also build essential STEM skills, including pattern recognition, problem solving and more. After they master the set's progressive STEM challenges, kids can build their own! STEM Explorers Brainometry includes 24 shapes and 10 double-sided STEM challenge cards. Largest piece (cross) measures 1.5"l x 1.5"w x 1"h. This fun learning tool is ready for homeschool or kindergarten classroom use.