Keller-Mathers, Susan. Big tools for young thinkers : using creative problem solving tools with primary students / Susan Keller-Mathers, Kristin Puccio. - Sarasota, FL : Center for Creative Learning, 1998. - 44 p. : ill. ; 28 cm. Bibliography: p. 41. ISBN: 1882511336 Subjects--Topical Terms: Problem solving in children.Creative thinking.