Testing is critical to any design, whether the creation of new software or a bridge across a wide river. Despite risking the quality of the design, the testing stage is often hurried in order to get products to market. In this lesson, students focus on the testing phase of the software/systems design process. They start by exploring existing examples of program testing using the CodingBat website, which contains a series of problems and challenges that students solve using the Java programming language. Working in teams, students practice writing test cases for other groups' code, and then write test cases for a program before writing the program itself.

Just about everything you can do on a computer—checking your email, posting to Facebook, online banking and shopping—is powered by software. The people who come up with that software, and keep it working efficiently, are behind the scenes of a big portion of our lives.  Software engineering is an exciting career,.In this remix, some reflections questions for students have been added.

Just about everything you can do on a computer—checking your email, posting to Facebook, online banking and shopping—is powered by software. The people who come up with that software, and keep it working efficiently, are behind the scenes of a big portion of our lives.  Software engineering is an exciting career,.