Students shared junk food investigations with 6th graders, who in turn conducted further investigations of their own and presented their findings/ investigations to high school students using presentation boards.
2015-2016 NASA Kick-off
Education outreach specialists from NASA led two groups of teachers through grade-level appropriate, standards-aligned problem-solving exercises for elementary and secondary students. They shared an interesting fact - funding for NASA education outreach is tied to missions. So all the educational resources are linked from mission home pages. Fortunately, there's a search engine: http://nasawavelength.org/