The activities are designed as a ready-to-go lesson, easily implemented by a teacher or his/her substitute to supplement a unit of study. In chemistry, the activities relate to concentration, with units as small as parts per million; solubility of compounds in water versus fat; and decision-making based on green chemistry principles. In biology, the activities related to the effect of a contaminant on a food chain and bioaccumulation of a fat-soluble contaminant. In environmental science, the ac