Using the Tens Boards, the child explores the number names of the tens and the sequence of numbers 11–99. Bead quantities are created from the 10 bars and unit beads in the Tens Bead Box and are associated with the corresponding numeral on the Tens Board. Includes a wooden box with lid containing 2 Tens Boards and 9 wooden cards printed with the numerals 1–9. One board has five printed number slots (10–50), the other has four printed number slots (60–90).