AMI Seguin Boards Ten (10 to 99)

A set of 2 rectangular boards each of which is divided by wooden strips to form 2 vertical sections and five horizontal sections. The boards have the numbers 10, 20, 30 to 90 printed on them. The material includes number cards from 1 to 9, which can be inserted into slots in the boards to enable the child to form the numbers from 11 to 99.