Jackie Grundberg worked all over the world as a wildlife biologist before settling down and becoming a biology teacher. When she needed to work in a Montessori grade school to practice the style of teaching she loved, she made a breakthrough discovery: she could effectively teach high school-level science to 4th-6th graders by incorporating experiential learning. Now, at Backpack Sciences, Jackie helps educators earning their Montessori credentials overcome the overwhelm of teaching science. However, with…