Using the Teen Boards, the child explores the numbers 11–19. Bead quantities are created from the 10 bars and colored bead stair in the Teen Bead Box and are associated with the corresponding numeral on the Teen Boards. Includes a wooden box with lid containing two Teen Boards and nine wooden cards.
0030AM - Niehuis Montessori Teen Bead Box: Individual Beads 蒙特梭利教具- 塞根板數珠盒 一Box with colored bead bars 1-9 and nine golden bead bars of 10, to be used with the teen boards. 包含1~9彩色串珠和9根10的金色串珠，需與塞根板配合使用。包裝尺寸：130×110×40, 配件：包含1~9彩色串珠和9根10的金色串珠, 材質：塑膠、櫸木、樺木膠合板、金屬