No contract to sign to use this cell phone! Just press the power button to fire it up and practice your science.
You can even change the colour of your phone in the quiz. You can see in the image at the side, there are a few colours to choose from and a "thumb print access" security system.
Each cell phone quiz is actually 4 quizzes in one: that is there are 4 sections/topics and each has 20 multiple-choice questions with correct and incorrect answer feedback.
So you get a total of 80 questions in the quiz to help you review stuff you learn in class.