Scar is willing to do anything to have power and control. Scar demonstrates that power and control can turn us selfish and impact others negatively. Meanwhile, Simba's motivation for power is fairness and restoring the good.
The principal gave a speech comparing the two groups of students that were present, one who gave up on their future while the others are still in school. He wanted to motivated them so they feel that they are not less superior in society and the first thing they would have to do is pass the exam.
The CyberSquad needs to power their ship's motor to stop Hacker. To get the motor started, they need to draw power from a crystal that has between 65% and 85% orange stripes; otherwise, the motor will not start or will burn out. They count the number of orange stripes on each crystal to determine the fraction of stripes that are orange. Then, they convert each fraction into a percent to determine which crystal they should use to power the motor.