The Geometer's Sketchpad, Grades 3-5, Exploring Number and Operations / Edition 1 in Bloomington, MN

This collection of Sketchpad activities is an excellent introduction to Sketchpad for both students and teachers, and gives students the opportunity to explore concepts in the Common Core State Standards for grades 3–5 from the domains of- operations and algebraic thinking- number and operations in base ten- number and operations—fractions