Joan Birman thought her major discoveries were behind her. Then came an email from a young neighbor — a girl who knew little ...

Explore the structure, standard problems, and curriculum goals of this specific math practice resource. Learn how educators use it to build fraction fluency.

Learn how to factor higher order trinomials. A polynomial is an expression of the form ax^n + bx^(n-1) + . . . + k, where a, ...