Keep a daily journal of your garden: what is planted, how they are growing, and any experiements done.
Science content (2016 curriculum):
Biology: Features, Adaptations of Living Things (K, 1, 3, 7)
Biology: Classification of Living Things, Biodiversity (1, 3)
Biology: Life Cycles (2)
Biology: Food Webs, Ecosystems, Biomes (3, 4)
Science topic (2005 curriculum connection):
Life Science: Plant Growth and Changes (grade 3)