Plan for Service Learning Leaders In sharing how kids can protect Guam s freshwater

Transcription

1 Plan for Service Learning Leaders In sharing how kids can protect Guam s freshwater 1. Show Mov. 1 / Module 1 Importance of freshwater. Ask Some Quick Questions: How long can people live without freshwater? Only about 3 days What do we mean by freshwater? Drinkable, not salty/ocean water, clean, not polluted Can we drink ocean water? No, because we will become dehydrated. Can we drink dirty or polluted water? No, we will be sick. Lead a longer discussion: What are ways you use freshwater at your house? Drinking, cooking, cleaning, flushing toliets, washing cars. ASK: What do we cook with water, what do we clean? What are ways we use freshwater at school? Students may answer the drinking fountains. ASK is that freshwater? ASK about other activities such as did your school (or did you know about a school) have a carwash? What about in the cafeteria? How does the janitor use water? Tell the students: A natural resource is something that comes from nature and that is valuable to humans. So, is freshwater an important natural resource? Is it one of Guam s most important natural resources? 1

2 Activity #1 Pass out sheets. Fill in the sheet asking what do people, animals, and plants need freshwater for. Let the student write their own answer, then go section by section and ask students to share their answers. Remind them this is only about freshwater. If an answer is ocean only activity like surfing remind that right now we are talking about freshwater. What do people need freshwater for? Go to the next section about Animals need freshwater for? Go to the next section about Animals need freshwater for? Guam Water Kids Protecting Guam's Fresh Water / Prutehi i Hanom Freskon Guahan Student Name: Date: Class: Period: Teacher: Life on Earth Use Fresh Water For People Animals Plants 2

3 2. Show movie part 2 / Module 2 The Water Cycle Then hand out the Water Cycle activity sheet to fill out. Refer to the definitions of the stages under the illustration on the next page to review. Remind students that all the stages of the water cycle are going on all over the world and all at the same time. We studied four stages of the water cycle but all stages are going on all the time! What is the 1st stage we talked about? Evaporation. What does that mean? Water heated by the SUN and evaporates into a gas. [Have the students write Evaporation next to the vapor rising from ocean] 2nd stage we talked about? Condensation. As the vapor accumulates it forms clouds. At first what color are they? White. What color do the clouds turn during condensation? Dark. Why? The clouds are filling with water vapor. [Now let s write condensation next to the dark clouds] 3 rd stage? Precipitation. What happens during this stage? Water falls as rain, snow, sleet or hail. You ve seen snow in person/on television? What is sleet? small pellets of frozen water that make the roads slick and what is hail ice balls like marbles falling? [Write precipitation by the rain drops] 4 th Stage collection and infiltration. The water can collect on the surface of the island in ponds and rivers (surface water) or can infiltrate underground (ground water). Be sure students write collection and infiltration under the ground on their papers. Label: the sun, the ocean, the house. Put you name on your paper. 3

4 Evaporation Evaporation occurs as the sun heats up the surface water in rivers, lakes, oceans, and the soil, and turns collected water into a vapor. The vaporized water rises into the atmosphere. Condensation Condensation occurs when the water vapor in the air cools and changes is collected in the atmosphere, forming clouds. As more moisture collects in the clouds, the darker they appear. Precipitation Precipitation occurs when so much moisture has condensed that the clouds can no longer hold it. Water falls to Earth in the form of rain, sleet, hail, and snow. Collection and Infiltration Collection and Infiltration: Some of the rain made by the Water Cycle falls right back into the oceans, but some rain falls onto land that drains into rivers and lakes and collects there. Some rain falls onto land and seeps underground or infiltrates and is collected underground. 4

5 Show Movie Part 3 Surface & Ground Water and Watersheds/Drainage Basin Ask questions about Surface Water and Ground Water Ask where is the surface water on Guam? In the south. What do we mean by surface water Rivers and Lakes. Ask where is the Ground Water on Guam? In the north. And where is the ground water in northern Guam. Students may answer in the aquifer. Ask if they remember the name of our aquifer. Tell them, yes, it is the Northern Guam Lens Aquifer. We learned about the watershed also called drainage basin. The rain that falls on higher ground flows down into streams and rivers. We said that wherever the rain can go, the pollution can also go. ASK: What does this mean? That rain carries the pollution with it wherever it goes. Where can the pollution end up? First in streams, then in rivers and lakes, and then in the ocean. Show Parts 4 & 5 (this is on onee movie) This is a short review of the previous material and then covers what kids can do in their everyday lives to protect our freshwater on Guam. Ask: What does it mean when we say, wherever the rain can go pollution can also go? Should we dump old car oil and other liquids on the ground? No. Should we throw bottles and paper and other solids on the ground? Also no because these contain inks, chemicals, plasti,c etc Ask: What are ways to save water every day? What do we mean by Turn off that tap! Brush teeth, taking short showers are examples. Ask if they can think of more ways to save. 5

6 Stop Leaks! Ask: How can kids help stop leaks? Why important? You don t know how to fix a leak or be a plumber. When you see a leak at home, what can you do? Confirm the answer is: Tell an adult. When you see a leak at school, what can you do? Confirm the answer is tell a teacher or janitor. Volunteer! How can we help? Ask the students what activities at school or on island they have helped with. Let students answer. Conduct the Q-TIP TASTE TEST Demonstration/Activity (SEE BELOW) After the taste activity, in closing: Ask the students if they think saving water is important? General answers, but if time allows, ask each student one-by-one to name something they will do to protect and conserve Guam s freshwater. (there will be repeats) Make sure Turning off Taps, reporting leaks, not littering or dumping and volunteering are all mentioned Formally Announce that the 4 th graders are now Guam Water Kids. GIVE OUT THE WATER KIDS PLEDGE CERTIFICATES Students will check off the boxes. They will print and sign their names. Students keep the certificates to take home. GIVE OUT GUAM WATER KIDS STICKERS Thank everyone, praise, applause. 6

7 Q-T Taste Test Activity Instructions Purpose is to demonstrate that not all pollution can be seen. Of course the water we are going to taste is safe, but you can see that although it is clear water, this does not mean is doesn t have something in it. There is nothing harmful in the water we are tasting, but never drink water from streams or rivers or water that you don t know where it came from. 1. Set up the four containers of polluted water on the table. Don t take the lids off until the activity is about to begin. 2. Place the wastebasket next to the table so all Q-tips can thrown away immediately. 3. Tell the children that all pollution cannot be seen (like on the slide). Explain that we are going to do a taste test. Something has been added to the water. It won t hurt you, but you will find out, not all pollution can be seen. 4. One leader or volunteer will hand out the Q-tips. 4 per student. Hold in the middle and have them take from the middle. Tell them to be sure NOT to double dip. During the activity the other leader or volunteer makes sure all the students immediately throw away the Q-tips. 5. Put the lids back on containers as soon as everyone has tasted. 6. Children ask the children to name the first one, second one and so forth. If confused ask who thinks they tasted Salt? Sugar? Vinegar? Freshwater? 7. Remind that this was a demonstration that pollution cannot always be seen. But microbes, chemicals can be in the water so be careful NOT to drink water from rivers and streams. Note: Someone may ask if the tap water that comes into our homes and schools on Guam is safe to drink. The Guam Waterworks Authority (GWA) constantly cleans and tests our water to make sure it is safe. 7