Final answer:
Wendy gets in trouble at school due to her obsession with a virtual reality nursery, and her father is angry because he believes it is negatively impacting her development.
Step-by-step explanation:
In the story, Wendy gets in trouble at school because she and her brother Peter spend too much time in a virtual reality nursery.
Their obsession with the nursery and the African landscape it creates causes them to neglect their schoolwork and other responsibilities.
Their father is angry because he believes the nursery is negatively impacting their development and wants to lock it for a few days to break their dependence on it.