Students study various samples of microorganisms in petri dishes. In this microorganism lesson plan, students place various samples of items in petri dishes and observe them after several days of incubation.

For this biology worksheet, students locate and identify various vocabulary terms related to classifying living things. There are 24 biology terms located in the word search.

Students examine samples of water to determine its cleanliness. They visit a waste treatment plant and/or reservoir. Students explore what protects the water supply from contamination by chemical or organize pollution. They trace the...