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Free tutorials using java applets to explore, interactively, important topics in precalculus such as quadratic, rational, exponential, logarithmic, trigonometric, polynomial, absolute value functions and their graphs. Equations of lines, circles, ellipses, hyperbolas and parabolas are also explored interactively. Graph shifting, scaling and reflection are also included. The definition and properties of inverse functions are thoroughly investigated. A graphical approach to 2 by 2 systems of equations is included.

Free graph program for mobi or for importing into word

A series of "ticket out" worksheets on graphing parabolas that get a little harder each time--I think the idea would also transfer well to trig graphs.

"# Ball-parking and the 10% Rule # Proportion # Hit the Middle # P.I.T.A # Calculator Shortcuts # "Seeing" with Graph Paper # Drawing and Knowing # "On Your Toes""