ETA hand2mind 20-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 2 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 9 3/4" x 2 3/4" x 2"