There is no reprimand if the goal is not reached they can just click the green flag again and try as many times as necessary. Once students have a grasp of how that various tools and parts work they should try the even more creative modules of the program, like Professor Tim's Workshop, that helps them create their own puzzles. If all the students do this then they could exchange puzzles and try to solve each others. This could be a really challenging and motivational activity. Math and Science are both used in this program.
Students see how various parts work and move.
The students can experiment with the gears and scenery, as well as name a specific goal and work to get the computer to do this. Angles and direction are important components in placing objects to achieve the goal of the puzzle. If there are some kids in your class that are somewhat intimidated by the lack of structure they can use the module called Build a Puzzle with Professor Tim. Tim help to prompt the students creativity. I know students would get hours of pleasure and important skills out of this program.