Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Math need not be a lonely endeavor! This is a collection of 116 mathematics problems designed especially for groups. The problems focus on proportional reasoning, spatial visualization, and learning to generalize from patterns -- central pillars of any math curriculum. The book includes help for the teacher, a topics grid, and connections to several high-quality middle-grades math programs. 3