Graduate / Statement of purpose for PhD in science Education [3]

Hi, Im trying to come up with my statement of purpose for a PhD program in Science Education. Im not trained in Education which makes it kind of weird, my bachelors and masters are both in Earth Sciences. Im currently taking a couple classes in Early Childhood Education. Right now I work as a PreK teacher (I love it!!!) but in the long run I would like to teach science in either high school or colleges. So, any help will be greatly appreciated, this is what the school ask for:

Describe your career goals and research interests, as well as your publications, work experience, and academic honors and organizations. You may also include an optional statement of your achievements, talents, background, experiences, and traits that will contribute to the enrichment or diversity of the University or community, beyond your academic credentials.