 Model-eliciting activities are based on real-life situations where students, working in small groups, present a mathematical model as a solution to a client's need (Zawojewski & Carmona, 2001).The problem design enables students to evaluate their solutions according to the needs of a client identified in the problem situation and sustain themselves in productive, progressively effective cycles of conceptualizing and problem solving.Model-eliciting activities (MEAs) are ideally structured to help students build their real-world sense of problem solving towards increasingly powerful mathematical constructs.