Learn to spell with fun, bright uppercase/lowercase letter beads. Letter Beads are perfect for teaching language to children and language games. Large, easy to string number and math signs are perfect for little hands to manipulate and sort. Big holes make these easy to string on chenille stems or yarn (not included). Includes teaching guide. Measurement: Uppercase approx. 0.625" x 1" and lowercase upto 0.63 x 1x (1.5x 2.5 cm). Math 0.875" (2 cm) tall. Ages 4 and up.