This is a bundle of PBL science units for 4th grade. These project-based learning (science-focused) research-based units are the perfect way to teach reading, writing, research skills, and science in one engaging, real-world unit. Your students will use key standards, such as research, reading comprehension, and engineering design in a real-life scenario. The best part about PBL is that student choice and differentiation are built in!4th Grade Driving Questions:How can I design a solution that w