## Reflection: Staircase of Complexity Modeling Population Growth - Section 1: Opening

Students really struggled with the Warm Up activity in this lesson. In hindsight, I would have spent more time at the start of class reviewing arithmetic and geometric means prior to giving them the next task.  We ended up taking a majority of class time for the warm up, but I still think it is time well spent. The task that follows, Growing, Growing, Gone, is a more complicated problem because the intervals between the population data is set at 20 years. I think that with a fuller understanding of the warm up problem, students will experience greater success on the main task.

Opportunity to Spiral Content
Staircase of Complexity: Opportunity to Spiral Content

# Modeling Population Growth

Unit 7: Functions
Lesson 10 of 11

## Big Idea: What will the United States population be in the year 2030? Students use linear and exponential growth models to make predictions and argue about which model is the best fit for the data.

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Standards:
Subject(s):
Math, Algebra, function
60 minutes

### Amanda Hathaway

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