Learning Resources 10-Row Rekenrek Counting Frame. Explore number bonds, simple addition and counting with this classroom classic! This 10-row Rekenrek counting frame features ten rows of ten beads; five red and five white. This five-bead grouping allows children to use five and ten as anchors for solving equations. Ideal for activities such as plus or minus one, making ten, doubles and other addition and subtraction strategies. The plastic frame measures 23cm L x 10cm W x 22cm H and features ten metal bars. Includes multilingual guide. Suitable for ages 5+.