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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.
This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2014-07-30.
This resource is five days of the research process. Topic selection and standards are day one. Day two is a guide to essential questions and supporting questions. Clear directives and procedure guide the student in the research process. Students learn to evaluate free websites, use noodle tools, and take notes. A guiding rubric is provided.