ETA hand2mind 100-Bead Wood Rekenrek, Math Counting Frame (Ages 4+) Help children develop number concepts and learn basic facts up to ten Perfect for teaching addition, subtraction, and number relationships Includes wood rekenrek frame with 10 rows of 10 beads (5 red and 5 white) Math manipulative for ages 4 and up, grades K-2 Includes one wood student frame that measures 8 1/2" x 9 1/2"