Upper Elementary:
Question: Adalyn is making sign to carry in a parade. She uses a piece of poster board that is 4 feet long and 3 feet wide and folds it in half, hamburger style. What are the area and perimeter of Adalyn's sign?
Answer: The area is 6 square feet and the perimeter is 10 feet
Solution: If Adalyn folds the poster board hamburger style, then the new length of the sign will be half of 4 = 2 feet. Since its dimensions are now 2 feet by 3 feet, that means that the area is 2 x 3 = 6 square feet and the perimeter is 2 + 2 + 3 + 3 = 10 feet.
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