This resource is explicitly designed to build towards this disciplinary core idea.
Comments about Including the Disciplinary Core Idea
The introductory portion of the lesson brings in the idea of fields. While the challenge video clip, “Inspector Detector Challenge” does so also, it is NOT recommended that teachers show the entire video as an introduction, as the video tells, rather than having students discover. The segment from 0:42 to 1:15, about how and why NASA uses magnetometers, would be appropriate to show at the end of the lesson, to make the connection between what the students have done and what NASA engineers do. An alternate video, about NASA’s MAVEN magnetometer, is available on YouTube at https://www.youtube.com/watch?v=kRDaAfIYZQk.
The devices that students build will be able to work to solve the problem, because fields extend through space. The devices allow students to map the effect of the field, figuratively by looking at their devices, and literally with a grid system.