Lines and Slope  Chameleon Home  Ask Dr. Math 

Note to Adults Lines and Slope: Chameleon Graphing is aimed at students in middle school and early high school, though we hope everyone will find Joan amusing. These pages emphasize visualizing slope and recognizing the patterns behind standard formulas. Most of the sections assume some knowledge of algebra, particularly substituting values and simplifying equations, but extensive familiarity with manipulating equations shouldn't be required. (For a more basic introduction to graphing points in the coordinate plane, see Sam's pages.) When you use these pages, don't feel bound to the order we've chosen: you might want to introduce slopeintercept form before perpendicular lines, or talk about drawing lines but ignore slope altogether. Try giving kids time (and graph paper) to draw their own examples Joan can only eat so many flies by herself. 
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