Thematic Units - Ocean "Fun ocean science activities are a perfect way to spend time at the beach or prepare for a trip to the ocean!" Ocean Science Fair Projects Grades Various Find project ideas. Ocean Unit Grade K-1 This PDF contains a full unit for younger students. STEM Works - Under the Sea Grades Various Collection of lessons that will bring the ocean to your 2nd Grade Ocean - Pinterest Explore Colette Schwenk's board "2nd Grade Ocean" on Pinterest. See more ideas about Classroom ideas, First class and Classroom themes.