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Andrea Chen
(New Orleans - United States)I am a high school English teacher in New Orleans taking the year off to read good books and relax. I currently work for the New Orleans Center for Creative Arts, designing an arts-integrated academic curriculum to prepare students for a rapidly changing ...
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- From: San Diego Area Knowledge Exchange for Developmental Math (SAKE)
- Contributed By: SAKE Owner SAKE Owner
The lesson begins with using the lcd to clear the fractions in the equation, and then a review of proportions follows to motivate the "shortcut" of cross multiplication for equations containing only a fraction on each side of the equation. The possible existence of extraneous solutions and solving the equations graphically is discussed before application problems are presented. The lesson concludes with exercises in manipulating formulas.
