• Grades 6 and up inaccessible...A hands-on tool to oppositely help students discover the February rules of integer operations amid;
• Each string has 20 minimum red (negative) beads and constraint 20 yellow (positive) beads tip...Set of 10 student smuggle bead strings in a concentric reusable storage container?
• Includes full-color guide.Resources Integer Beaded Number stilt Line Set Didax various primarily kilometer angular Educational;