Georgian Court University |
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Water Conservation![]() Grade Level: 4-6 Subject: Science Time Frame: Two or three, 45-minute class period(s) Overview: In this lesson students will explore the different types of water reserves present on this planet and the reasons why, on a “blue planet”, fresh water is still a scarce resource that needs to be preserved and protected. Students will examine the ways in which water is used in their everyday lives and the simple measures that they can take in their every day lives that can make big differences to the amount of water they use. Finally students will link the need for water conservation back to what they’ve learned about the importance of freshwater inputs to maintaining healthy estuarine ecosystems within the Barnegat Bay. Image Source: http://images.suite101.com/797434_com_tapdrip.jpg NJ Core Content Standards STANDARD 4.1 (NUMBER AND NUMERICAL OPERATIONS) ALL STUDENTS WILL DEVELOP NUMBER SENSE AND WILL PERFORM STANDARD NUMERICAL OPERATIONS AND ESTIMATIONS ON ALL TYPES OF NUMBERS IN A VARIETY OF WAYS. 4.1.8 A. Number Sense 1. Extend understanding of the number system by constructing meanings for o Percents 2. Demonstrate a sense of the relative magnitudes of numbers. 3. Understand and use ratios, rates, proportions, and percents (including percents greater than 100 and less than 1) in a variety of situations. STANDARD 4.2 (GEOMETRY AND MEASUREMENT) ALL STUDENTS WILL DEVELOP SPATIAL SENSE AND THE ABILITY TO USE GEOMETRIC PROPERTIES, RELATIONSHIPS, AND MEASUREMENT TO MODEL, DESCRIBE AND ANALYZE PHENOMENA. 4.2.6 D. Units of Measurement Select and use appropriate units to measure … volume. STANDARD 4.5 (MATHEMATICAL PROCESSES) ALL STUDENTS WILL USE MATHEMATICAL PROCESSES OF PROBLEM SOLVING, COMMUNICATION, CONNECTIONS, REASONING, REPRESENTATIONS, AND TECHNOLOGY TO SOLVE PROBLEMS AND COMMUNICATE MATHEMATICAL IDEAS. 4.5 A. Problem Solving Learn mathematics through problem solving, inquiry, and discovery. Solve problems that arise in mathematics and in other contexts. C. Connections Recognize that mathematics is used in a variety of contexts outside of mathematics. STANDARD 5.8 (EARTH SCIENCE) ALL STUDENTS WILL GAIN AN UNDERSTANDING OF THE STRUCTURE, DYNAMICS, AND GEOPHYSICAL SYSTEMS OF THE EARTH. 5.8.6 B. Atmosphere and Water 1. Describe the composition, circulation, and distribution of the world’s oceans, estuaries, and marine environments. 2. Describe and illustrate the water cycle. Standard 5.10. (Environmental Studies) ALL STUDENTS WILL DEVELOP AN UNDERSTANDING OF THE ENVIRONMENT AS A SYSTEM OF INTERDEPENDENT COMPONENTS AFFECTED BY HUMAN ACTIVITY AND NATURAL PHENOMENA 5.10.6 B. Human Interactions and Impact 1. Describe the effect of human activities on various ecosystems. 2. Evaluate the impact of personal activities on the local environment STANDARD 6.6 (GEOGRAPHY) ALL STUDENTS WILL APPLY UNDERSTANDING KNOWLEDGE OF SPATIAL RELATIONSHIPS AND OTHER GEOGRAPHIC SKILLS TO UNDERSTAND HUMAN BEHAVIOR IN RELATION TO THE PHYSICAL AND CULTURAL ENVIRONMENT. 6.6.8 B. Places and Regions 1. Compare and contrast the physical and human characteristics of places in regions in New Jersey, the United States, and the world. 4. Explain how regional systems are interconnected (e.g., watersheds, trade, transportation systems).. 6.6.8 C. Physical Systems 1. Analyze the impact of various human activities and social policies on the natural environment and describe how humans have attempted to solve environmental problems through adaptation and modification. 4. Compare and contrast various ecosystems and describe their interrelationship and interdependence. 5. Describe world, national, and local patterns of resource distribution and utilization, and discuss the political and social impact. 6.6.8 E. Environment and Society 1. Analyze the impact of various human activities and social policies on the natural environment and describe how humans have attempted to solve environmental problems through adaptation and modification. 4. Compare and contrast various ecosystems and describe their interrelationship and interdependence. 5. Describe world, national, and local patterns of resource distribution and utilization, and discuss the political and social impact. STANDARD 9.2 (CONSUMER, FAMILY, AND LIFE SKILLS) ALL STUDENTS WILL DEMONSTRATE CRITICAL LIFE SKILLS IN ORDER TO BE FUNCTIONAL MEMBERS OF SOCIETY. 9.2.8 A. Critical Thinking 1. Communicate, analyze data, apply technology, and problem solve. 2. Describe how personal beliefs and attitudes affect decision-making. 9.2.8 B. Self-Management 2. Demonstrate responsibility for personal actions and contributions to group activities. 9.2.8 C. Interpersonal Communication 1. Demonstrate respect and flexibility in interpersonal and group situations. 2. Organize thoughts to reflect logical thinking and speaking. 3. Work cooperatively with others to solve a problem. 4. Demonstrate appropriate social skills within group activities. 5. Practice the skills necessary to avoid physical and verbal confrontation in individual and group settings. 6. Participate as a member of a team and contribute to group effort. Multiple Intelligences Spatial, Kinesthetic, Linguistic, Interpersonal. Logical/Mathematical, Naturalistic Materials
Learning Objectives SWBAT:
Anticipatory Set While the students are settling in their seats waiting for the lesson to begin, the teacher will catch their attention by singing the following to the of “Row, Row, Row Your Boat” (source: http://fcs.tamu.edu/housing/4h/songs.pdf)
Gallon, Gallons, Gallons Drops, drops, drippety drops, Drizzling down the drain, It’s my job to turn it off, I want to save that rain!
Cups, cups, cups of water, Running down the drain, It’s my job to turn it off, I want to save that rain!
Gallons, gallons, gallons of water Rushing down the drain, It’s our job to turn it off, We all have much to gain.
Sequence of events (adapted from http://www.schoolship.org/files/inlandseas/661.pdf) 1) Teacher will ask the students to volunteer information from the previous lessons they have learned which explained why its important that people living in the Bay’s watershed conserve water. 2) Teacher will ask students if they know or can guess what percentage of all the water on Earth is in a form that can be used for human consumption. 3) Students will write down their answers. (Teacher may want to remind students to use prior knowledge from previous lessons about water, the water cycle, and watershed.) 4) A few students should be asked to volunteer to share their answers to demonstrate the large range of what most students think they have to use (probably a lot). 5) One of these student volunteers will be invited will to pour water from a 1,000 mL graduated cylinder in a second graduated cylinder to represent the amount of water that represents the percentage of Earth's water available for human use that they just shared with the class (this may take some discussion with the class about how to convert the target percentage to a volume in this context). 6) Once this is done, the class should discuss whether or not they think the amount of water that the volunteer chose was correct. If not, alternatives should be sought until there is at least general consensus on the percentage and thus the volume that should be in the second cylinder. 7) Teacher will mark the estimate on the side of the graduated cylinder with a sharpie or other quasi permanent marker. 8) Teacher will explain to students that he / she will now demonstrate the amount of water in the Earth and will see how close the students were in correctly estimating the amount of water that’s really available to human use. 9) Teacher will start by refilling the first 1,000 mL graduated cylinder and reminding the class that, just like last time, this represents the total amount of water found in any form on planet earth. 10) Teacher will then choose another volunteer and ask him / her to pour 28 ml into a third 1,000 mL graduated cylinder. 11) Teacher will explain that this represents the total amount of fresh water present on planet Earth and that the remaining 972 mL left in the first graduated cylinder represents the saltwater found in the Earth’s oceans. You may want to mix some salt in to this water to make the point (If you add 34 g which is a little less than 6 teaspoonfuls of salt to this amount of water you will create a solution that is 35 ppt, or about the same salinity as seawater) 12) The same, or an additional student can be chosen to pour 23 mL of the 28 mL from the third graduated cylinder into a 50 mL graduated cylinder. 13) Teacher can explain to students that the 23 mL represents the water that’s locked up in icecaps and glaciers and so isn’t available for humans to use in their homes and communities. 14) The remaining 5 mL in the original 1000mL cylinder is the water that’s available to humans for their use. 15) The same or yet another student can be chosen and asked to pour 4 of the 5 ml in another container. 16) Teacher will explain to students that this represent groundwater (the water in soils and aquifers). 17) A final student can be chosen to pour the remaining 1 ml in the container into a shallow dish. 18) Teacher will hand that student a pipette and ask the student to suck the remaining water up into it. Then the student should dispense 2 drops from the dropper. This represents the water in all of the lakes and streams on the entire planet (i.e. surface water). The student should then dispense the remaining1 drop. This represents all of the water in the atmosphere including clouds. 19) Teacher will present students with the image (supplied below) representing the same concept that was taught with the water demonstration. 20) Teacher will prompt students with questions reviewing the information they just were presented e.g..
Answers
21) Students will be prompted to explain why the demonstration they just did relates to the need for water conservation. (The main idea students should understand is that there is a limited and small quantity of fresh water available to us, so we need to take care of it and not waste or pollute it.) 22) Teacher should emphasize that everyone needs water and that it is ok to use water when needed, but we need to make sure we aren’t wasting it. 23) Students will be prompted to each think and write down a list of different ways that they use fresh water independently. As students write, the teacher should jog their memories by asking students to think about where water is used in school, at home, or outside. 24) Students will then form groups of four to share their ideas, and come up with other ones. 25) Teacher should then have students share their ideas with the class. To make the sharing more fun, teacher can have the students stand. He / she could then toss out an inflatable ball to a student who would then share an idea from their list, and then toss the ball to another student to share an idea that has not yet been mentioned. After each student shares an idea, he / she should sit and would then not be allowed to catch the ball again. If a student shares an idea that was already shared, he / she should be offered the option to share another idea. When most or all of the ideas have been shared the game should stop. 26) Students will then be handed out a slip of paper with a “water fact” on it to share with the rest of the class (supplied). 27) The students should return to their groups and talk about ways in which water may be wasted if use inappropriately for each of the uses on their list. These can include ideas that arise from the water facts that they’ve just heard or ideas that they generate from their own experiences 28) Students will each receive a print out of the WaterLion booklet (supplied on website: http://sftrc.cas.psu.edu/LessonPlans/Water/PDFs/4HWaterLion.pdf). 29) The class can read the four first pages together while students volunteer/chosen to read aloud. Or, to promote learning comprehension, each group can read an assigned page in the pamphlet and share the highlights with the rest of the class in sequential order of the groups’ assigned page. 30) Students will choose one of the four activities supplied in the booklet to do and report back with the class the following day. OR The class as a whole will do all the activities together as assigned by teacher. 31) Students will discuss ways in which they, their families or communities can reduce their water use with the guidance of the teacher. 32) Students will write in LARGE letters one thing that they “pledge” to do at home, at school or elsewhere in their lives which will reduce their own or their family’s water use on a piece of colored paper cut out in the shape of a water drop and place it on a large poster board or projected image of the Barnegat Bay. 33) Students will be prompted to remember the connection between these ‘freshwater droplets’ of conserved water and the health of the Barnegat Bay. (When people conserve water, the water they don’t waste is able to run to the Bay and create the unique brackish water habitat needed by the unique animals and plants that live in the estuary.)
Assessment Collect students lists of water uses and ways to save water as well as their worksheet from the closing activity below to assess the effectiveness of students’ learning in this unit.
Closing Activity Students will be given the ‘Someone who…’ fill-in sheet (below) to complete while moving around the classroom. Students should be reminded that they need to be honest and that each should sign their names on at least three other people’s sheets. Find Someone Who... (Source http://learningtogive.org/lessons/unit382/lesson1_attachments/2.html)
Extension Ideas
o Brick MUA. Rob Karl, Source Water Administrator. Brick Municipal Utility Authority, 1551 Highway 88 West, Brick, NJ 08724. PHONE: 732-458-7000, ext. 271 WEB SITE: http://www.brickmua.com
Resources Image for use in reviewing results of water volume exercise.
Water facts for use in information sharing exercise: (http://www.sscwd.org/tips.html; http://www.chelanpud.org/water-trivia.html. We hope we’ve provided more ideas than you’ll need for your class so that you can choose ideas that are of particular interest to / suitable for your group.
Other Resources
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© 2009. Amanda Traina (Author), Louise Wootton (Editor)
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