Abstract
Generative Artificial Intelligence (GenAI) chatbots provide teachers with opportunities to enhance their expertise by exploring topics relevant to their practice. However, studies have raised concerns about ChatGPT’s mathematical accuracy. This pilot study evaluated ChatGPT’s Pedagogical Content Knowledge (PCK) and Content Knowledge (CK), revealing that while it generates varied and detailed responses indicating competence in PCK and CK, some responses are flawed or incorrect. While ChatGPT 4o can serve as a valuable professional learning resource in certain areas of mathematics education, traditional teaching methods and human insight remain essential.