3 years & up. This "waddle" of penguins will delight and inspire children into pre-coding fun! The pre-coding Penguin Stones promote directional and positional language, matching practice, problem solving, pattern making, logical thinking, and sequencing skills. These durable stones are specifically designed to embed pre-coding skills through an appealing, tactile resource. Set features four of each directional arrow and two without arrows. Stones measure 2". Included: 18 Penguin Stones.