Phoenix teacher challenges students to solve heavy desk problem

They say many great inventions are the result of accidents, but for these eighth graders, coming up with an alternative to their heavy, hard-to-move science tables was a careful and calculated decision. "We're going through this multiple stages, what they call iterations of engineering, where they've designed them," Jonathan Perrone said. "We're gonna test them, we're gonna re-build them, and see how it goes."