The IDEO shopping cart project is a classic resource used in K-12 engineering and design education. Although the movie is a bit old, the elements of the designer process (research, team work, ideation, etc.) are timeless.
In the classroom, you can use this video as an introduction to the design process or focus on segments of the movie to hook or highlight a specific stage of your student's design. If you are interested in more IDEO resources, check out the D.School operated by Stanford University, which is heavily influenced by IDEO's process and people.