just click the organelles that each is line is pointing at. After you are done reading the information, press the green flag to restart it to read something else. Sometimes some of the diagram may show upon the information, so if it does, then press the green flag and go on the organelle to make it normal. Just do that until it fixes itself. The words that are in a red oval, click on it to read information on what the organelle or thing is.
This is for my Cell project for 6th grade Science