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Guide students to discover the concepts on their own! Little direct instruction required. Students do the work. Leads to retention, not repetition.
Lesson includes a real-life example for students to do on their own first. Then uses that example to understand solving by graphing. Also includes understanding solving by substitution through using prior knowledge of substituting values for x or y. The lesson will help students understand what equations should look like to solve easiest by substitution and graphing.