Using the seasons in the science classroom increases student observation skills as they focus on subtle differences such as shades of color and differences in structures. In this article, the author presents a variety of activities that can help students identify and demonstrate patterns and changes in leaf or plant development. The ability to accurately observe and notice small details is a skill important to scientists. To help students develop this skill, this author suggests having them record and share observations, focusing on smaller, more precise details. When students observe changes in the seasons, they can extend their science knowledge by carefully noting changes in color, shape, and patterns in vegetation, asking questions, and making predictions. Soon after the school year starts, students may brainstorm questions or do a KWL (what I Know, what I Want to know, what I Learned) about the changes that they will observe in the seasons. (Contains 5 figures and 3 resources.)