This WEEDS ON THE WINDOWSILL lesson plan also includes:
Discuss the suffix "cide." Have students name words having this suffix (homicide, suicide, genocide). Ask students what all these words have in common. Then ask students to define the word "pesticide." (Pesticides control organisms that threaten production and storage of food, fiber and animal feed.) Write the words "fungicide," "insecticide," "rodenticide," and "nematocide" on the board.