Unit Quiz: How Can We Decrease Air
UNIT QUIZ
In the unit, you learned about possible solutions to problems and that problems are limited to the available materials and resources you have. Read the
scenario about Crissy to choose the best way for her to get to school.
On her way to school every day, Crissy needs to cross a creek that is five feet wide. The solution to her problem must be safe and easy to use and she cannot
ever get wet. She can use only a rope and some boards that are ten feet long. She brainstorms four ideas. Which idea meets all of her criteria and
constraints?
Select the correct answer.
She can build a sailboat
O She can swim across the creek.
O She can tie the boards together to make a bridge.
O She can tie the rope to a small tree branch and swing across
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