This is similar to a worksheet I posted last week, which addressed over, under, and beside. This one addresses behind and in front of, which I think are more difficult. These require the student to take the perspective of the girl, for example, in order to determine what object is in front of her versus behind her. In other words, the correct answer depends on which way she is facing. This is difficult especially for children with autism, who often have trouble with perspective taking skills.
This worksheet has two pages for a total of 12 positional questions.