People who design new materials, machines, and products are engineers ... Tell students that in this lesson, they will be the engineers who design a cell phone flotation device. 3. Discuss the ...

PITTSBURGH, March 10, 2025 /PRNewswire/ -- "I wanted to create a hands-free floatation device for relaxing in the water," said an inventor, from Sacramento, Calif., "so I invented the PARTY FLOATY.