Engineering is Elementary (Eie), which is a science curriculum that teaches educators how to introduce engineering to an elementary student. This topic is a relatively new area to teach in science. Therefore, students will solve engineering problems by inquiry and project-based learning. Engineering is broken down into five different subcategories, which include package, geotechnical, environmental, electrical, and civil. An example of an environmental engineering lesson would be a case study in which the students must solve how to clean up a huge oil spill and help the wildlife rescue. The Eie is also an excellent curriculum for inclusion classrooms. Similar to the lesson above, an inclusion classroom would observe several models on pollution and obtain knowledge on how the environment is changing.
This link is a chart that describes in detail of how engineering is taught according to grade level
A third link will explain how the Eie design process works