I recommend ChatGPT. It's an AI chatbot that can provide 24/7 support and guidance to your students. It can answer their questions, provide personalized recommendations, and even turn study materials into games for a more engaging learning experience. It also promotes active learning and critical thinking by engaging students in conversation. As an AI tutor, ChatGPT can help students explore topics in-depth and provide a conceptual understanding of complex subjects like math functions. This tool can also reduce your workload by taking over some teacher tasks.