How can we bridge from proportional reasoning to functional reasoning? In this episode Pam and Kim talk through a Problem String that moves students from proportional reasoning into linear functions.

Talking Points:

• Building Proportions Problem String
• Thinking about "between" and "within" relationships in a ratio table
• Slope, rate of change, similar triangles, equivalence: all figure-out-able
• Ratios and proportional reasoning to functional reasoning
• Slope is a ratio

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