Support sensory maths exploration with Tactile Array Stones by Yellow Door. This set of 15 durable stones features indented number arrays from 1 to 5 in three unique patterns, perfect for teaching counting, subitising, and number bonds. Ideal for outdoor use in water, sand, and mud, these early years maths manipulatives encourage hands-on learning. Suitable for age 2+, each stone measures approx. 55mm. A versatile resource for EYFS classrooms.