Support your child’s growing understanding of numbers beyond ten with our Seguin Boards A and B, a key Montessori mathematics material designed to introduce ten and eleven numbers in a clear and structured way. Seguin Board A focuses on numbers 11 to 19, helping your child build each number by combining a ten with individual units. Seguin Board B extends this learning to numbers 10 to 99, reinforcing the pattern of tens and units and supporting a deeper understanding of how numbers are formed. By physically placing the number cards onto the boards, children move from simple counting into number composition, developing a strong connection between quantity, number names, and symbols. This hands-on process supports memory concentration and logical thinking while making abstract concepts more concrete and accessible. Crafted from high-quality timber with clearly printed numerals, each board is durable, easy to handle, and designed to support independent use in a calm, structured environment. Why you will love it: Introduces teen numbers and numbers up to 99 in a clear, structured way Builds understanding of tens and units and number composition Strengthens number recognition, sequencing, and logical thinking Encourages concentration, independence, and repetition Ideal for children progressing beyond basic counting this material provides a strong foundation for place value and more advanced mathematical concepts.