Module 28  Activities for Calculus Using the TI83 
Introduction  Assignment  Activity 1  Activity 2  Activity 3  Activity 4  Activity 5 
Activity 4: Introduction to Slope Fields 
Overview: One of the ways to visually think of the derivative is to use the idea of local linearity. That is, if you look “up close” at the graph of a differentiable function, it appears almost straight, so locally (on a small enough interval) a differentiable function behaves very much like a linear function. You can experience this directly by using a graphing handheld. If you zoom in repeatedly on a particular point on the graph of a differentiable function, eventually the graph appears indistinguishable from a straight line. The slope of that line is the value of the derivative at that point. Materials:
Activity: Introduction to Slope Fields 
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