The Teen Board uses the knowledge of the bead stair to introduce the quantities and vocabulary of numbers 11-19.
A wooden box with lid containing 2 teen boards (teaching 11-19) and 9 wooden cards with the numerals 1-9 printed in Cursive.

The Tens Board visually introduces the quantity, vocabulary, order, and symbols of numbers 10, 20, 30, 40. 50, 60, 70, 80, and 90, and 1-99.
A wooden box with lid containing 2 ten boards (teaching 11-99) and 9 wooden cards with the numerals 1-9 printed in cursive.