Activities arranged by school level: includes puzzles, games, projects and hands-on experiments. Elementary (Grades K-4), MIddle School (Grades 5-8), High School (Grades 9-12)
https://www.faa.gov/education/educators/activities/
Curriculums arranged by grade level:
https://www.faa.gov/education/educators/curriculum/
https://www.nationalmuseum.af.mil/Education/For-Educators/Lesson-Plans/
Teaching with Historic Places has aviation themed classroom-ready lesson plans.
https://www.nps.gov/subjects/teachingwithhistoricplaces/lessons-by-theme.htm#aviati