This is an interesting website full of resources for elementary, middle school and high school. Attached is an interesting lab activity (Lettuce seed assay) that could be done for 11U Chemistry or 11U Biology about the toxicity of lettuce seeds from this website. See lettuce assay attached. Lettuce_Seed_Assay
https://www.beyondbenign.org/curriculum/
Elementary resource – exploring sustainability – mussels