Curated OER
Pesticide Watch Card
Students examine human health by identifying dangerous pesticides. In this agriculture lesson, students research the food production system in the United States and discuss dangers such as pesticides, chemicals and insecticides which...
Curated OER
LD50 of NaCl to Gammarus spp.
Young scholars learn the meaning of LD50 through lecture and discussion. Through experiment, students graph and calculate the LD50 of salt on fresh water amphipods. Young scholars compare results of the experiment with pesticides and...
Curated OER
Just Spray 'Em!?
High schoolers read the label of an insecticide and identify pertinent information. They tell that the higher the LD50 the less toxic the chemical. Students begin to extrapolate the impact of pesticide use beyond the death of the insect.