Electronic Proceedings of the Twentieth Annual International Conference on Technology in Collegiate MathematicsSan Antonio, Texas, March 69, 2008Paper S036
This is an electronic reprint, reproduced by permission of Pearson Education Inc. Originally appeared in the Proceedings of the Twentieth Annual International Conference on Technology in Collegiate Mathematics, ISBN 0321644883, Copyright (C) 2009 by Pearson Education, Inc. 
Let's Visualize the Differentiation of the Trigonometry Through the Mathematical Activity Using a CBL 
Click to access this paper:

It is difficult to understand abstract mathematics. The authors have helping tools for students. With the graphic
calculator, the student learns mathematics more easily. They can visualize the definition and the differentiation
of the trigonometry function with the concrete method. This method uses CBL.
Keyword(s): trigonometry, TI89, calculus