Are Wiccans’ Beliefs Proved by the Efficacy of Their Spells?

Questions about what to say to a Wiccan who says her beliefs are proved by the efficacy of her spells, how to explain people having spiritual experiences outside of Christianity, and recommended materials for teaching elementary-aged kids critical thinking.

• What would you say to a Wiccan who says her beliefs are proved by the efficacy of her spells?
• How do we explain the fact that people have had spiritual experiences outside of Christianity?
• What materials would you recommend for teaching elementary-aged kids critical thinking skills?