Clear Crystal Block Set - Pack of 25

25 CRYSTAL CLEAR SHAPES -- This set of 25 polished, acrylic blocks features 17 different shapes. Watch kids create patterns, sequences and imaginative pictures A HANDS-ON LEARNING RESOURCE -- Use these educational toys for hands-on teaching of shapes, light and shadows. Watch kids develop an early understanding of patterns, sequences and shapes LIGHT IT UP! -- Watch these manipulatives spring to life in front of a sunlit window or a light panel. Create streams of light and eccentric shadows MAKE GEOMETRY FUN -- As kids learn to fit these shapes together, their understanding of spatial relationships, geometric vocabulary and congruence will grow MADE FOR THE RIGORS OF CHILDHOOD -- Made from extra thick acrylic plastic, these shapes are designed to last for years. And just rinse them with soap and water for cleaning!, Manufacturer: TickiT