The Cornell Laboratory of Ornithology has a curriculum called Students as Scientists: Nature-Based Inquiry. The free units are divided into grades K-5 and 6-12, each with lessons, handouts, and an editable Google slideshow. This is an updated curriculum adapted from their earlier inquiry-based science unit called “Investigating Evidence.”
Students as Scientists uses nature to inspire student curiosity and scientific investigations. These free units include six lessons plus slides and handouts that will help you guide your students to ask and answer their own questions, bringing the excitement of doing real science to your classroom!