Use these Sensory Discs to create captivating tactile and visual experiences for early learners or those with special needs. Also perfect for fidgety students, these discs are made for touching, squeezing, exploring, and observing! The special flip-flopping sequins have an iridescent quality that changes colors with light refraction. When a finger traces through the scaly maze of sequins, they flip over, turn black, and leave a design. Roll them back in the opposite direction, and they return to shimmering colors. A magnetic backing allows the discs to adhere to metal surfaces.