1. Title 31: Title of Lesson Date: White space: 1. Where does drinking water come from? 2. How might it become polluted or contaminated? Summary of Introduction: Challenge: Key Words: Contamination, contaminate, aquifer, groundwater, surface water Data: KWL Chart Handout Analysis: Notes to myself for tomorrow:

2. 1. Where does drinking water come from? 2. How might it become polluted or contaminated?

3. Title 31: Title of Lesson Date: White space: 1. Where does drinking water come from? 2. How might it become polluted or contaminated? Summary of Introduction: Challenge: Key Words: Contamination, contaminate, aquifer, groundwater, surface water Data: KWL Chart Handout Analysis: Notes to myself for tomorrow:

4. After reading an expository text, students will be able to: Create a written description explaining that drinking water comes from either surface water or groundwater. Explain that water may contain chemical or biological contaminants, which may come from water waste. Use appropriate tools and techniques to gather, analyze, and interpret data.

5. Water falls to the surface of the earth in the form of rain. Most evaporates or runs off to lower elevations. This water accumulates in ponds, lakes, rivers and oceans. The water they contain is called surface water. Some water soaks into the ground, depending on soil and rock cover. This water can saturate porous sediments and sedimentary rock. Layers of these rocks, filled with water, are called aquifers. They contain groundwater.

6. Aquifers accumulate rainfall slowly. Their water maybe hundreds or thousands of years old. Wells drilled into aquifers tap into this stored water. Water accumulates and travels very slowly in an aquifer. Therefore, contaminants that were added to surface water or materials buried below the surface may not appear in nearby well sites for years.

7. Title 32: Title of Lesson Date: White space: 1. What are some example of epidemics you may have heard about in the news? Summary of Introduction: Challenge: Key Words: Evidence, hypothesis Data: Map of Deaths Analysis: Homework 1-4. Feel free to take a picture of the questions. Notes to myself for tomorrow:

8. Exit Ticket What are some sources of water contamination?