Your car decreases in value from $20,000 to $17,000. What percent of the value have you lost? Pupils answer word problems by determining the percent of change. 

Concepts

percent change, percents, problem solving strategies

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Additional Tags

math

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Instructional Ideas

• Use the sixth example as a challenge exercise for those that are ready
• Before introducing the formula, allow pupils to develop their own strategies for answering the question

Classroom Considerations

• The vocabulary in the lesson may be confusing to some; spend time explaining and giving examples when needed
• The eighth lesson in a series that follows a review of percents

Pros

• Includes application with real-life scenarios
• Contains a practice problem set

Cons

• Begins with a formula to calculate the percent change; learners don't have an opportunity to understand the meaning of the term/concept

Common Core

6.RP.A.3.a 7.RP.A.3