Limit Definition and Pliers Mechanism

The limit definition is the most important and the most difficult one in calculus definitions for beginners. Students always have problem in understanding it in details. In a lot of cases students cannot understand the definition or worse than that misunderstand it. This paper will try to present a teaching method for limit definition by some tools like pliers and tweezers that all students know how to work with them. Location of the notations , , and δ will be shown on those tools so that students have a primary sight of each part of the limit definition in her or his mind.