Perfect for Earth Day! In this extensive Botany STEM Challenge, students create window greenhouses and observe plant growth. Then they use the engineering design process to build a plant transportation device to safely carry their saplings home! This challenge also highlights Katherine Esau, a pioneer in Botany. History, science, engineering, and math-- it is all included along with teacher instructions and student handouts. Click here for an editable STEM journal to use with distance learning,