In the cartoon, a young boy is being instructed in the Arabic alphabet by the teacher. But even before he starts with the letters, the very basis of his world view and knowledge is presented (in his thought balloon) as this: All of Israel must be replaced by Palestine. See the map on the right side of the balloon, remembering Arabic is read from right to left. This goal is presented as the foundation stone, the guiding light, the very basis of Palestinian thought and identity.
Here's another example of the kind of people the PA admires as heroes--terrorists who attacked Israeli civilians.