Demonstrate swapping variables' values by swapping the contents of two cups full of liquid; you need a third cup to swap the liquids just like you need a third, temporary, variable to swap the values.

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  • Student’s often struggle with swapping the values of two variables.
  • Using two cups full of liquid, it’s easier for students to see why you can’t just swap values without a third, temporary container.
  • This method helps students visualize what they need to do and why!

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