This resource is about proportional relationships. To get started, read the following problem.
A group of kids are making lemonade to sell at their lemonade stand. Following the recipe, they use 6 lemons and make 8 cups of lemonade. The next week, they use the same recipe with 9 lemons and make 12 cups of lemonade. 
Sources of images used for this section:
Little boy, Microsoft clipart, office.com
Lemon tree  Korfu Zitronen, JeanLuc 2005, Wikimedia commons
Glass of lemonade  Shekanjbeen, Mainsari66, Wikimedia Commons
Copy the following table into your notes, and use the information from the problem to fill in the empty cells.
Lemons

Cups of Lemonade

3


6

8

9

12

12


15


Click here to see the completed table.
Use the table to answer the following questions.
1. What happens to the amount of lemonade the recipe makes if you double the number of lemons?
2. What happens to the amount of lemonade the recipe makes if you triple the number of lemons?
3. What happens to the amount of lemonade the recipe makes if you change the number of lemons by any scale factor?
4. What rule did you use to fill out the missing information?