In this action research, first-graders were challenged to cope with a sequence of modelling tasks involving an analysis of given situations and choices of mathematical tools. In the course of the sequence, they underwent a change in the nature of their problem-solving processes and developed modelling competencies. Moreover, during the task…

Drug use and abuse presents a significant problem to individuals, families, and law enforcement in communities across the United States. Methamphetamine is a particular concern in one rural eastern Missouri county. Much work being done in this county by multiple agencies to decrease methamphetamine production and use. Little attention, however,…