For Worth, the science content of preschool education is crucial. While she agreed that there is not a finite number of topics that must be covered, for her it is nevertheless very important that young children be working on topics and concepts that are fundamental to science, not just random topics that seem interesting. Thus, the questions of how much knowledge, what kind of knowledge, and what kind of preparation and support teachers need assume critical importance. Worth argued that teachers need to know far more science than they currently do; “They have to have inquired before they can help children inquire. They have to know where children’s inquiries might go conceptually in a science field in order to both understand and follow children.”