Learning Resources Mental Blox Critical Thinking Game Stack, pattern and match the multicolor shapes, but dont be fooled by these endlessly enjoyable blocks mean brain-boosting business Mental Blox help children practice following verbal instructions, asking questions and build critical thinking skills. Activity cards provide children with examples of what to build This logic game includes 20 chunky plastic blocks, 20 activity cards, an activity guide and features four different shapes and three different attributes for a real challenge Blocks measure 2 x 2 Great for kindergarten ages 5 and up