Today, Atticus and I began our unit on body systems. He studied the photo of a glass frog and brainstormed answers to the following question: How do body systems in this glass frog work together to perform life functions? We watched the video, "Glass Frog," and wrote a list of questions to investigate to find out more about how the glass frog's body systems work together to perform life functions. We brainstormed the topic of body systems by thinking about answers to the following questions: Could you move if your muscles were not attached to your bones? Do other systems in the body interact with the muscular system? How do you think the muscles in your body are controlled?