Rivers of Life Rivers Through Time Project Outline: Objective 1: Complete preparation activities. Objective 2: Start to make historic maps & begin creative art/writing projects. Activity 1: Mapping the Past Activity 2: On-going Artistic and Literary Expressions Objective 3: Tools of the Trade Activity 3: Stratigraphy and Cross-Dating Activity 4: Artifact Classification Objective 4: Introducing Garbage Archaeology Activity 5: It’s in the Garbage Objective 5: Paper Time Machines - Post Cards Activity 6: Post Cards from the Past Objective 6: A Stream Walk Activity 7: Stream Reconnaissance Activity 8: A Walk on the Wild Side Objective 7: It’s Clean Up Time!! Activity 9: Conducting your River Clean Up Objective 8: River Junk as Artifacts and as Art Activity 11: Junk that Imitates Art Objective 9: Complete mapping, creative art, & writing projects. 1 Rivers of Life Project Introduction Rivers Through Time will take your students from the present, back through history, and into prehistory as they learn to see their watershed and community through the eyes of anthropologists, archaeologists, and historians. This project can easily be combined with elements of the other three ROL projects. For example, you can focus on historic aspects of flooding, or do a Steamer Trunk exchange using artifacts concerning watershed history. Note: The activities planned for objectives 4-7 involve a river-bank clean up and doing a garbage archaeology analysis and sculpture of the junk collected by your students. This activity is a land activity—for reasons of safety it is recommended that you keep students on the river bank and that they not wade along shore to retrieve garbage visible in the stream. As an alternative, your class can do a cleanup of a city lot, ravine, or street that is within walking distance of your school. This is a perfectly acceptable option that may simplify the logistical challenges of scheduling, adult leadership, and transportation. Since lots, ravines, and streets drain into rivers via the nearest storm sewer or creek, removing litter will benefit local waterways. OBJECTIVE 1: COMPLETE PREPARATION ACTIVITIES Preparation Activities: Getting Ready for Rivers of Life The activities below are recommended to help your class prepare for their online river adventure. The first activity, Introducing You and Your Watershed, introduces your class at the start of the program. Next is an activity that introduces watershed mapping—an activity that is common to all projects. Preparation Activity 1: Introducing You and Your Watershed Introduce your class and community to your fellow Rivers of Life participants by submitting this information in the Introduction Discussion Item in the Conference Center at the start of the program. That way, we will know who is with us. Please include the following information: • • • • • Identify your class, grade level, school, and community. Identify your latitude and longitude (you may want to post a world map with pins marking locations of other Rivers of Life schools). Identify your school’s watershed, the river that flows through it, and the ocean it eventually empties into (see following exercise if your students need help answering this question). Tell which of the four Rivers of Life projects you’ll be undertaking. Share any other brief comment or greeting (a couple of paragraphs at most, please), including any work or study your school has done regarding rivers. 2 Rivers of Life • Send, via e-mail or US mail, a photo of your class or school for posting in the Rivers of Life Conference Center. Preparation Activity 2: Mapping Your Watershed All four projects involve mapping activities that have common elements as well as elements specific to each project. This introductory mapping activity introduces the concept of a watershed and basic features of a river system, including river source, tributaries, confluences, river mouth, and direction of flow. For this activity, in addition to using a highway map and the topographic maps as described below, U.S. schools can also consult the watershed maps found at the Environmental Protection Agency’s Surf Your Watershed web site: http://www.epa.gov/surf/. These maps will help students recognize the borders of their watershed and its position in relationship to nearby towns. More detailed larger-format maps of each watershed can be requested from the EPA web site, though these maps may not be available for all watersheds. The larger-format EPA watershed maps can be received via the Internet or US mail. Background How do rivers change as they flow across the land? How do human activities affect the wellbeing of streams and rivers? You don’t need gills and fins to appreciate how important rivers are for maintaining and enhancing life. We draw an estimated ninety percent of our drinking water from the world’s rivers—yet that only represents ten percent of the water they provide us. Irrigation uses 65 percent and industry another 25. The world’s rivers were original highways and are still important for commerce, transportation, and recreation. Their banks have become sites for some of our greatest cities. Since ancient times, rivers’ mysterious ways and ever-shifting personalities have inspired musicians, poets, artists, and writers. Materials highway map USGS or other topographical maps and photocopies of those maps colored pens Procedure Wherever you stand on planet Earth, you’re always within a watershed—an area of land that drains into a river or stream. Explore the concept of a watershed by studying the course followed by a nearby stream. Step 1. Using a highway map, choose a small nearby stream to explore. Since a large stream may cover many of the topographic maps used in this activity, choose a stream less than about 16 km. (10 mi.) long. 3 Rivers of Life Step 2. U.S. schools can order copies of the U.S. Geological Survey (USGS) topographic “topo” map (or maps) that show the length your stream. Schools in other countries can check with government offices to see if similar topographic maps are available. A state index of USGS topo maps and the maps themselves ($4 each) can be ordered by calling toll-free 1-800-USA-MAPS. Also, local outdoor stores may have topo maps of streams in your area. (Note: To introduce the basic features of a watershed, this activity can be completed using any single topographical map [or contiguous series of maps] that has an entire watershed within its borders—it doesn’t have to be a map of a nearby stream. To save time finding and ordering local topo maps, you may find it easier to purchase from a local outdoor store topo maps of a regional or national wilderness area, which are more likely to be stocked than local maps of developed areas. ) Step 3. Photocopy the parts of the maps that show your stream and carefully tape the photocopies together to form one large map. Step 4. Mark with colored markers the source and mouth of the stream, confluences (meeting points) with any tributaries, wetlands, connected ponds or lakes, and any dams or rapids. Step 5. Figure out which way the stream is flowing on the map by studying the elevation numbers on those contour lines that cross the stream (descending elevation numbers indicates downstream flow). Draw directional arrows on the stream to show which way the water flows. Step 6. Trace the watershed boundaries of a small creek that drains into your stream. Follow the creek to its source, then continue uphill until contour lines indicate the land begins sloping downward. This ridge is the “height of land” separating the creek’s watershed from neighboring ones. Trace this meandering ridge line in both directions until you’ve drawn the boundaries of the creek’s watershed. Reflection Questions How many other small watersheds can you find on your map? What do colors and symbols on the topo maps suggest about how land is used in your stream's watershed? Can you estimate the height of any dams by studying the map’s contour lines? Do symbols and colors suggest what any dams may be used for? OBJECTIVE 2: MAPPING THE PAST Activity 1: Mapping the Past Background This activity builds on the basic watershed mapping activity described in Preparation Activity 2, above. The basic mapping in that activity introduces important components of watersheds and rivers. In Mapping the Past, your students will create map features that express how humans 4 Rivers of Life have interacted with your watershed’s lands and waters through history. Students can develop these maps throughout the length of the Rivers of Life program, either in conjunction with or instead of other activities in Rivers Through Time. Defining Boundaries. Watersheds can be considered at multiple levels of scale and you will have to define the boundaries for your school’s watershed for this mapping project. The size you choose is up to you, but we suggest something between 10 and 100 square miles (26-260 square kilometers). You can explore the Environmental Protection Agency’s Surf Your Watershed web site (http://www.epa.gov/surf/),which can generate local watershed maps throughout North America that you can print (see page 15 for assistance in printing web pages). To make best use of these maps, you may want to enlarge them with a photocopier and have your students trace their features on butcher paper or newsprint to create a baseline map that they can add features to in this activity. Procedures Step 1. Discuss with your students the following questions and list responses on the blackboard. The intent is not to come up with definitive answers, but to have students assess what they know and don’t know and which questions are interesting. Note and point out which questions are more readily answered and which would require study and research. 1. What are “your” watershed’s boundaries? 2. What primary rivers and streams occupy your watershed and where are their sources? 3. Where are the predominant natural communities in your watershed, i.e., forests, prairies, wetlands, lakes, streams? 4. What cultural groups (including different native tribes) have lived within your watershed since post-glacial times, where have they lived, and what economic activities have sustained them? 5. In what different ways have the watershed’s rivers and lakes been used by people in the past compared to today’s uses? 6. What kinds of land use have taken place historically in the watershed and which natural resources have they relied on? 7. What impacts have historic land uses and uses of waterways had on the watershed’s natural communities? 8. Which human communities in your watershed have developed along river banks and why have they developed there? 9. What animal and plant species once native to your watershed have become extinct and what caused their becoming extinct? Step 2. After reviewing these questions, organize your students into small groups and discuss and rank the questions according to levels of interest. For the top five or six questions in each group’s list have the students brainstorm what additional sources of information would be useful for answering the question more fully. Then, as an entire class, rank the questions according to interest and brainstorm and list sources of information useful in answering the questions. You might want to add suggestions, including: historic site visits; searching for historic post cards at antique shows and shops; historical society or library visits; field trips to document land use; 5 Rivers of Life interviewing family and community members; arranging for classroom visitors; using Internet resources; and conducting newspaper, magazine, and book research. Step 3. Once the top 4-6 questions have been selected, divide students into small working groups that will be responsible for research and map development of a chosen question. Work with them in developing a research plan that coordinates classroom resources—i.e., arrange for classroom visitors or field trips that can assist most or all groups with their research. Step 4. When students have assembled enough information to begin adding it to their base maps, they can develop the following map features: a set of symbols to represent data, such as locations of natural communities; historic tribal boundaries, villages, and burial mounds; habitats of now-extinct species; and locations of current towns and cities (changes in time may be represented by changing color or shape of symbols or creating multiple maps) a legend revealing the meaning of map symbols a scale a north arrow to orient the map to the cardinal directions Activity 2: On-going Artistic & Literary Expressions Background The information and experiences uncovered by your class in their explorations of the history and culture of your watershed can naturally inspire various forms of creative expression. You can start these at any time during the Rivers of Life program and continue them in conjunction with or instead of other activities suggested below. Here are some ideas: • • • • • • create drawings and paintings of historic sites or events write a play of past events or lifeways prepare albums of historic photos with written non-fiction captions, poetry, or fictional accounts find and assemble examples of music, artwork, or writing by local groups of different ethnic traditions that expresses various perspectives toward rivers or nature. record on audio tape or video tape oral interviews of community members with different experiences, cultural perspectives, and areas of expertise relating to local rivers. Transcribe segments of oral history interviews and print them beside accompanying photographs or drawings that depict the subjects discussed. 6 Rivers of Life OBJECTIVE 3: TOOLS OF THE TRADE Activity 3: Stratigraphy and Cross-Dating (This activity is adapted from Intrigue of the Past, an archaeology curriculum developed by the US Department of the Interior’s Bureau of Land Management) Background How can archaeologists tell how old objects are that they dig from the ground? How can they reconstruct how people lived hundreds or thousands of years ago based on the scattered remains of their long-ago lives? One way is through a careful analysis of the objects found in a particular place using stratigraphy and cross-dating. The following activity introduces these concepts. Vocabulary cross-dating: the principle that a diagnostic artifact dated at one archaeological site will be of the same approximate age when found elsewhere. diagnostic artifact: an item that is indicative of a particular time and/or cultural group: a computer would be a diagnostic artifact of the modern age. spatial: concerned with space strata: many layers of earth stratigraphy: the arrangement of layers of earth representing different geologic events. stratum: one layer of earth. temporal: concerned with time Procedure Step 1 - Setting the Stage. Stack five books on a table. Tell the students that the books were placed in their positions one at a time. Ask them which book was placed in position first. Which one was placed last? Have your students imagine that each book represents a layer of sediment collecting on the earth’s surface for hundreds or thousands of years. Each book can be thought of as a strata, or a single layer of sediment. The idea that the oldest layers always are found on the bottom of undisturbed layers of sediment is called the Law of Superposition. Step 2. Using the “Site Near Richfield” activity sheet as a guide, draw a layer near the bottom of the backboard. Show how artifacts are deposited as people live on top of the layer. Then a new layer of sediments is deposited on top of that, by natural processes or by another group of people leaving different types of artifacts. This happens several times until the stratigraphy is built up to present-day levels. Step 3. Distribute the “Site Near Richfield” activity sheets to the students. Have students answer the questions using the information on the stratigraphy drawing. Step 4. The artifacts on the activity sheet have been dated based on the age of the stratum in which they are found. Ask your students if they found similar artifacts elsewhere, whether or not they would know approximatley how old the artifacts are. (Answer: yes). How would they 7 Rivers of Life know? This concept is known as cross-dating. It is the process by which an artifact type that has been dated in one place can be dated when found elsewhere. Step 5. Give the “Cross-dating” activity sheet to the students. Ask the students to imagine that Richfield is a town ten miles away from their town. Have them determine the approximate age of the artifacts based on the information from the “Site Near Richfield” activity sheet. Step 6. Ask the students if they would be able to study the stratigraphy of a site if the strata had already been mixed up by illegal digging. If someone took an arrow point, what kind of information would he or she have removed from the site? Extension Undertake a field trip to compare the stratigraphy visible along a road cut with that of a river valley cliff. Measure and draw the layers on graph paper. How are they different? Describe the strata by comparing differences in color and texture and other observable characteristics. 8 Rivers of Life 9 Rivers of Life 10 Rivers of Life Activity 4: Artifact Classification (This activity is adapted from on the Intrigue of the Past, an archaeology curriculum developed by the US Department of the Interior’s Bureau of Land Management) Materials “Ancient Artifacts” and “Classification” activity sheets for each group. Vocabulary artifact: any object made or used by humans. sherd: a broken piece of pottery Procedure Step 1. Tell the students to imagine they are a team of archaeologists. The team has completed excavation on an ancient site in the American Southwest. They are now ready to begin analyzing the artifacts brought back to the laboratory to find out about the people who lived at the site. They will use a series of questions to structure their inquiry. What was the diet of the site’s residents? What did they use for personal adornment? How many different ways did they decorate their pottery? How many different kinds of raw materials did they use to make their tools? Step 2. Distribute the “Ancient Artifacts” and “Classification” activity sheets. Working individually or in small groups, have the students cut out the artifacts on the “Ancient Artifacts” activity sheet. They should group the artifacts so they can answer the questions on the “Classification” activity sheet. Have the students answer the research questions and tell how they classified the artifacts to do that. As the students work they will find that objects move from one category to another depending on the question asked. For example, the two pieces of shell could be used to answer questions concerning diet and adornment. Thus, they could be classified as food remains and as jewelry. Step 3. Have students create one or more questions of their own. How might they classify their objects to answer these questions? 11 Rivers of Life 12 Rivers of Life Classification Activity Sheet Name: _________________________ 1. What was the diet of the site’s residents? 2. What did they use for personal adornment? 3. Describe the different ways they decorated their pottery. 4. Name the different kinds of raw materials they used to make their tools. 13 Rivers of Life OBJECTIVE 4: INTRODUCING GARBAGE ARCHAEOLOGY Activity 5: It’s in the Garbage (This activity is from on the Intrigue of the Past, an archaeology curriculum developed by the US Department of the Interior’s Bureau of Land Management.) Background Garbage doesn’t lie. By studying what people have thrown away, archaeologists can learn a great deal of information about a culture that is hard to uncover by talking with people about what they do. The unstable or unwanted remnants of everyday life end up in the garbage. This is as much true of people today as it is of prehistoric peoples who left no written record about their lives. Bill Rathje, an archaeologist, is a pioneer in the study of contemporary American garbage. He has learned many things about the relationships of human behavior and trash disposal— information that is useful in studying people of the past and the present. He has found that people will often tell an interviewer what they believe is appropriate behavior, but their garbage tells another story. People frequently say they eat lots of fruit and vegetables, yet their garbage shows they do not. Another example is that people say that they recycle more than they actually do. Just as we do not throw our trash any old place, neither did prehistoric people. Their garbage heaps are called middens, and are a rich source of archaeological information about their lifeways. Layers of trash also tell a story over time. Archaeologists excavate middens slowly and carefully, recording the location of the artifacts and samples recovered from the midden. They analyze the tiny fragments of prehistoric meals (bone slivers, seed hulls, plant parts) and charcoal from cooking fires. The animals and plants these remains came from can be identified and archaeologists can learn very precise information about the economies of past people. If a midden is disturbed and layers mix, it becomes impossible to interpret the lifeways of past people. Vandals looking for artifacts dig in middens and they destroy irreplaceable information about the past, tearing pages from the history book of time. Everyone can help by not digging at sites or collecting artifacts. Vocabulary artifact: any object made or used by humans classification: systematic arrangement in groups or categories according to established criteria chronology: an arrangement of events in the order in which they occurred. context: the relationship artifacts have to each other and the situation in which they are found culture: the set of learned beliefs, values, and behaviors generally shared by members of a society. evidence: data which are used to prove a point, or which clearly indicate a situation hypothesis: a proposed explanation accounting for a set of facts that can be tested by further investigation. inference: a conclusion derived from observations. midden: an area used for trash disposal 14 Rivers of Life observation: recognizing or noting a fact or occurrence. Procedure Step 1 - Setting the Stage. Read to your students the following quote attributed to a famous anthropologist, Franz Boaz: “...man never lies to his garbage heap.” Have your students brainstorm what they think their family’s garbage could tell about them. (You can suggest these ideas: family size, income, and preferred foods and activities). Step 2. Explain to your students that they are going to be archaeologists, analyzing garbage (middens) to learn about the people who threw the garbage away. Demonstrate some of the information that can be learned from garbage by examining the trash from your classroom waste basket. A. Before emptying the waste basket, ask your students where they would expect to find the oldest garbage in the waste basket and what their reasons are for thinking so. (On the bottom is the oldest trash, on the top is the most recent garbage.) Have them test their hypotheses by examining the garbage and arranging the trash in chronological order. Ask them to look for any dated items in the trash, such as newspapers or post-marked envelopes or product dates with which they can establish a precise date for strata within the trash. B. Ask what culture is this garbage from? Could the garbage be mistaken for that of another culture? Would the garbage in your classroom waste basket be the same or different from classroom garbage in another country? Your town 100 years ago? Are basic human needs represented in the trash? C. Based on their observations, what can your students infer about the behavior of the people who threw away the garbage in your room and about the origin of the garbage? Would the cafeteria trash be the same as that from the wood shop? The library? How might a single person’s garbage different from that of a family with many children? Might a vegetarian’s trash be different from a meat eater’s? D. Sort the trash into piles based upon some type of similarity. This is a classification, perhaps including categories like paper, food containers, other office supplies. E. Point out that the trash is obviously from a classroom because you have presented its context—that is, the relationship artifacts have to each other and the situation in which they occur. Ask how the context would be different if the same trash that is in your waste basket were mixed with other garbage in your town’s landfill. Would inferences that your students could draw about these same artifacts be different because of the different context? F. Have your students construct a scientific inquiry by developing a hypothesis as to how the waste basket from another grade level or part of the school might be different from the one in your room. For example, they might hypothesize that trash from a class of young children might have few papers with cursive writing. Have them test their 15 Rivers of Life hypotheses by studying a waste basket from the room in question. Classify the trash into two categories: papers with and papers without cursive writing. Ask them to evaluate and accept or reject their hypothesis. Step 3. Divide the class into groups of 4 to 6 students and give each group a bag of trash from a different room in the school. Have each group analyze their trash using activity sheet “It’s in the Garbage.” Step 4. Ask the students to visit each other’s “middens” and have a spokesperson from each group present a summery of their findings. 16 Rivers of Life It’s in the Garbage Activity Sheet Name:_______________________ Directions: Use this activity sheet to take notes during your “excavation.” When you have completed your excavation, use the information to write a report about the garbage that addresses the items below. You must give reasons for your answers based on the “evidence”: the artifacts that support your answer. 1. Could you tell when your garbage was thrown away? If yes, how? If no, why not? 2. List two or more inferences you can make about the person(s) who threw the trash away. 3. Where did your garbage come from? How do you know? 4. Which basic human needs does your garbage show are being met? 5. Name two or more of the categories that you used to classify your trash. 6. How do you know this garbage is from your own culture? 17 Rivers of Life OBJECTIVE 5: PAPER TIME MACHINES—POST CARDS Activity 6: Post Cards from the Past Background Post cards reveal fascinating insights about places and people, and how each influences the other. The Rivers Through Time area of the Rivers of Life web site will feature a number of historic post cards taken along the Mississippi River since the late 1800s. Visit the web site with your students to examine these images. In addition to the following activities, you’ll also find activities associated with these post card postings on the web site. 1. Prominent landmarks and vistas featured in historic post cards can be visited today and photographed as they appear now. 2. Your students can call antique dealers to see if local historic post cards are available. They can also visit local historical societies and use historic photos instead of postcards. Even if a particular dealer doesn’t carry any, he or she may be able to suggest other stores or individuals who do. Your students can take pictures of the same places captured in these historic cards and send both (contemporary pictures and historic post cards) on to the Rivers of Life for posting on the web. (Note: include a self-addressed, stamped envelope and we will return photos and post cards to you.) 3. Look for pictures that document how land use and river developments have occurred over time. Your students can bring the pictures up to date by taking pictures of the same places. They can study the post cards and write how land and river uses have changed as revealed in the series of post cards. You can submit these collections for publication on the Rivers of Life web site too. OBJECTIVE 6: A STREAM WALK (These activities are adapted from The Stream Team On Patrol, by John G. Shepard, Abdo and Daughters, Minneapolis, 1993.) Activity 7: Stream Reconnaissance Background You can think of this activity as a kind of field reconnaissance mission that will accomplish two goals. It will give your class a face-to-face introduction to a local stream and some of its features and will let your students see what work needs to be done to clean it up. It will also allow you to plan your river cleanup so that you make the best use of the time you have available. If you’re planning to conduct a ravine, lot, or street clean up, you should still visit the site by yourself ahead of time and with your class and involve them in planning your clean up. 18 Rivers of Life Procedure Step 1. To compliment the information that you have gathered about your stream and its watershed, your students should consult local or state river management agencies, river stewardship organizations, and/or city parks departments to see if staff can recommend areas that are in more desperate need of being cleaned up—maps and other supplies may be available as well. Step 2. Based on the research you have conducted, you should personally inspect a couple of possible stream sections that are no more than a half mile long. The stream sections you choose should include cleaning up sites appropriate for your group—sites with litter may be best for younger children while high school students may be able to deal with sites containing large objects. Also consider nearby stream and land-use features such as tributaries; storm sewer discharge pipes; eroding stream banks; and examples of stream-bank housing, commercial, or agricultural development. Note: Make sure that the site you choose to clean up with your class has none of the following hazards: Possible chemical hazards, such as sealed barrels and chemical containers. If you find sealed or rusted barrels containing any kind of chemical, contact your area’s pollution control authority. Biological hazards, such as syringes or animal carcasses. Steep banks or unstable areas. Step 3. Make plans for where you will work with your collected junk after completing your cleanup. An area outside your school with space to store and spread out your garbage may be best. Consult your school administrator and/or janitorial staff for ideas. Also let them know you’ll need a place to dispose of the garbage you collect when you are through with the project. Step 4. Before you leave for your outing you will need to contact land owners for permission if your stream section passes through private property. You may want to ask a naturalist from a nearby nature center to join you to help interpret natural phenomena you’ll encounter on your walk. Activity 8: A Walk on the Wild Side Materials Needed: A notebook and pencil for everyone, camera and film, first aid kit, a magnifying glass, topographic and stream maps, compass, water for drinking, 19 Rivers of Life NOTE: Identify bathroom facilities near your site!! Procedure Step 1. Before leaving for your stream walk, read an explorer’s journal segment or passage from an account by an early traveler or settler that describes your stream. This can do wonders to set the mood, instill a sense of expectation, and provide a point of contrast to the conditions you may discover on your stream walk. Step 2. When all is ready, set out on your expedition, keeping the following safety tips in mind: Volunteer adult or older student leaders may be needed to help keep watch of your students. For younger students, assign pairs of “buddies” and make it clear that buddies are to stay together and watch out for each other. Older students can be assigned to small groups instead of pairs. Make the rules crystal clear: stay on shore, no wading and no rock hopping out into the stream. Beware of sharp objects and any broken glass and be careful walking over and around boulders and fallen trees. Step 3. Note on your map the locations of creeks entering the stream; road crossings; farms, homes, factories, and other development; dams and structural changes; stream banks without vegetation where soil is washing into the stream; and storm sewer discharge pipes and pipes that drain rain water from farm fields. Also note any changes in the color or smell of the water and record where these occur. Step 4. Also note where garbage has been dumped or washed downstream and, in general, how much litter is found in each part of your stream. Note what kinds of development surround any areas with heavy litter. Step 5. Look for, list, and note the location of wildlife in and around the stream, including fish, birds, and land animals. Note surroundings of any wildlife sightings. OBJECTIVE 7: IT’S CLEAN UP TIME! Activity 9: Conducting your Clean Up Background This activity involves taking your students to the banks of your selected stream and collecting garbage found there. The same safety precautions should be applied here as were undertaken in the Stream Walk activity above, including having sufficient supervision by adults or older students, grouping students in pairs or groups, staying out of the water, being wary of hazards (see section on stream walk above for details). 20 Rivers of Life Materials Needed: work gloves for everyone garbage bags first-aid kit sun screen drinking water site map forms (see below) pencils and paper for each group of 5-6 students one River Cleanup Activity Sheet (below) for each student 20-foot length of string 21 Rivers of Life Garbage Archaeology Site Exploration Instructions 1. Select a circular study site 40-feet in diameter (site size can be adjusted to mark an area with sufficient amount of garbage to study) for each group of 5-6 students. 2. Drive wooden stakes in the ground to mark the center of each site, then have the students mark the boundaries of a circle with a 20-foot string anchored at the stake. 3. Have students number and list each item found within their site on a separate sheet of paper and mark the locations of all objects by number on the site map. 4. After mapping is complete, collect the debris, recycle all recycables and dispose of other garbage appropriately. 5. 22 Rivers of Life Activity 10: The Junk Detectives Background Now that you are through sorting and indexing your garbage, the question is: what does it all mean? This activity uses some of the same questions you used in the “It’s in the Garbage” activity to see what your pile of river junk reveals about our culture, its values, and attitudes towards rivers. Have your students complete the questions on the following activity sheet and then discuss the questions as a class. 23 Rivers of Life River Cleanup Activity Sheet Name:_______________________ Directions: Use this activity sheet to take notes during your “excavation.” When you have completed your excavation, use the information to write a report about the garbage that addresses the items below. You must give reasons for your answers based on the “evidence”: the artifacts that support you answer. 1. Could you tell when your garbage was thrown away? If yes, how? If no, why not? 2. List two or more inferences you can make about the person(s) who threw the trash away. 3. Where did your garbage come from? How do you know? 4. Which basic human needs does your garbage show are being met? 5. Name two or more of the categories that you used to classify your trash. 6. What does this garbage suggest about your community’s attitudes toward rivers? 7. How is the garbage from the river different from the garbage you studied from waste baskets around your school? What conclusions can you draw from these differences? 24 Rivers of Life OBJECTIVE 8: RIVER JUNK AS ARTIFACTS AND AS ART Activity 11: Junk that Imitates Art Background By this time your students will have discovered how rich with meaning the stuff we call junk can be. A discarded tennis shoe that was put together in Mexico from New Jersey plastic and cotton grown in Asia says a great deal about how small the world has become and how interdependent nations are. Creating an art sculpture out of your junk can give expression to what your students have learned—it also can be just plain fun. Here are some ideas: Procedure Step 1. Discuss the impressions made on your students of finding and collecting garbage on the banks of the stream. Discuss their ideas of how people’s behavior should change so that rivers are less polluted. Explore what kind of message they might be able to communicate through creating a sculpture of junk from the river that would motivate people to take greater care of our waterways. Step 2. Divide your class into small groups and review your collection of river junk. Brainstorm free-associations of what the various objects in different combinations remind them of. Wild ideas are welcome here, so encourage students to be open to each other’s suggestions, even if they’re silly or bizarre. Have one student write down these ideas. Have each group select their favorite three ideas and explore which of these might work well to address the goals identified in the first step of the activity. Step 3. Review any relevant cultural myths and legends you have studied related to rivers. Step 4. Using the ideas your students have identified, create one large sculpture as an entire class or return to small groups and make a series of smaller sculptures. Step 5. When your sculpture(s) are completed, be sure to take close-up photos of them and send them to the Rivers of Life so we can post your photos on the web. OBJECTIVE 9: FINISHING UP The final objective for Rivers Through Time is set aside to complete any mapping, art, writing, and post card projects undertaken earlier in the program. Please mail any copies of your students’ finished work to Rivers of Life web gallery and we will post them for exhibition. 25