An Introduction to Cross Number Puzzles Across the Grades
Sorting to Algebra Developing Mathematical Thinkers.
By : Jennifer Virden. Giftedness is defined as “aptitude, ability, or potential in one or more general domains,” Gange (1985) as cited in Hill (2005).
An Introduction to Cross Number Puzzles Across the Grades Created by: Lyn Channey, Kristy Garvin, Karen Kissel, Barbara Wennerberg, and Amy Zell.
