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Grade 2 at Home Learning the Learning This Week Will Focus on a Cross-Curriculum Approach in Reading/Writing, Mathematics and Science

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Grade 2 At Home Learning The learning this week will focus on a cross-curriculum approach in Reading/Writing, Mathematics and Science. The ​ student is expected to identify and compare the properties of natural sources of freshwater and saltwater. The learning focus for Social Studies will be a review of citizenship, responsibility, time, and mapping skills. Students will use those skills learned in Reading/Writing and Mathematics to complete these activities. It is recommended that each day students spend 20 minutes reading independently, spend 30 minutes on the cross-curricular materials (Science, Math, Reading/Writing) and spend 15 minutes on the Social Studies materials. Materials provided by district resources: STEMscopes and Studies Weekly. Bodies of Water Emmy spent all day playing in the ocean. Heat from the Sun beat down on her. After a while, she noticed she was thirsty. She tried a sip of the ocean water. Yuk! It tasted terrible. Emmy was surrounded by water. But she had to go somewhere else to find a drink. Why? Some water is salt water. Earth’s oceans are filled with salt water. So are the seas. Salt water has lots more salt than fresh water, which is why we can taste it. Our bodies cannot handle that much salt. People cannot drink salt water at all. In fact, it will make us sick. That is why Emmy had to find a drink of fresh water instead of ocean water! About three-fourths of Earth is covered in water. Almost all of this water is salt water. Remember that Earth’s oceans and seas contain salt water. Some marshes also contain salt water. A marsh is an area along a coast filled with water and tall grasses. Many birds in salt marshes About 97% of Earth’s water is can drink salt water! When salt water. Most of this water the birds drink the water, is found in the oceans. special glands remove the extra salt. 1 Bodies of Water Some water is fresh water. Water that is not salt water is called fresh water. People and many animals cannot drink salt water. They must drink fresh water. Only 3% of all water on Earth is fresh water. Most of Earth is covered in water. That is why our planet looks mostly blue. The blue areas are the big oceans! We can drink only about 1% of the water on Earth. Where does this water come from? We cannot get it out of the ocean. Ocean water is too salty. We cannot get it from giant ice sheets, or glaciers. The water in glaciers is frozen. Where can we find water that is both fresh and liquid? Here are some places. Write something you already know about these sources of fresh water: Glaciers are huge sheets of ice. Streams: ________________________________________________________________ Rivers: ________________________________________________________________ Lakes: ________________________________________________________________ 2 Bodies of Water Let’s learn more about these sources. Streams are Rivers are wider and Most lakes are completely small bodies of longer than streams. surrounded by land. Some water. They flow Many rivers flow from lakes connect to rivers. into rivers. lakes to oceans. Fresh water comes from other sources. Rain water is fresh water. Fresh water also comes from underground lakes and streams. People can bring it up to the surface. They drill down into the ground. Then they build a well to bring up the water. Rain provides fresh water. It runs off Earth’s surface and fills rivers, streams, and lakes. Not all lakes contain fresh water, though. Some lakes are full of salt water. China has many salt-water lakes. The United States has one of the most famous ones. Salt Lake City in Utah is named for the nearby Great Salt Lake. The lake is saltier than Earth’s oceans! Salt collects on the shores of the Great Salt Lake in Utah. The lake gets very little rain. No rivers flow into it. Why would this make it salty? 3 Bodies of Water What Do You Know? Look at the following photographs. Decide whether they show fresh water or salt water. Circle your answers. Fresh water Salt water Fresh water Salt water Fresh water Salt water 4 Bodies of Water Career Corner: Oceanographer Scientists who study Earth’s oceans are called oceanographers. There are different kinds of oceanographers. They study different parts of the oceans. Marine biologists are oceanographers. They study plants and animals that live in oceans. Oceanographers can also study climate. If Earth’s climate becomes warmer, oceans will climate: the weather in become warmer. This affects the plants and animals a place over many that live in and next to the oceans. Oceanographers years may also study ocean waves. This is important because large waves can damage buildings and hurt people if they reach shore. Knowing how waves move can help save lives. 5 Bodies of Water Water Body Postcards This project can help your child to better appreciate local water bodies. First, visit one or more lakes, streams, oceans, or other water bodies near where you live. (You may also visit manmade water bodies such as reservoirs, though be sure to explain to your child that people created these particular water bodies to meet their need for fresh water or their desire for recreation.) If you do not live close enough to a water body to easily visit it, conduct online research on a nearby water body. Your child should be able to describe the water (fresh or salt), as well as the kinds of organisms that live in or around the water body. Encourage your child to learn how people in the community use the water body. If the water is fresh, do people drink it? Do people use it for bathing or cooking? If the water is salty, do people swim in it? Do they catch fish in it? At home, instruct your child to make a postcard describing the water body for people who might want to visit it. The postcard should clearly identify whether the water body is a lake, stream, pond, or some other type of water body. Your child should include illustrations of the water body and of any organisms that live nearby. The illustrations should also show how people use the water body. Here are some questions to discuss with your child: 1. How do people in our community use this water body? 2. Why is the water in this water body useful for these purposes? 3. Has our community had to address problems with the water body such as pollution or overuse? If so, how have we attempted to solve these problems? 6 Bodies of Water Pre-Reading Activity Categorize Words Look at the words below. Write each word in the category it belongs. Each word should be used one time. 97% of Earth’s water oceans most lakes glaciers 3% of Earth’s water seas rain rivers drinkable water Fresh Water Salt Water 1 Bodies of Water Earth and Space LOOK at this picture of a stream moving rapidly downhill: THINK about the source of the stream. How can you tell if it is shallow or deep? WRITE about the stream. Is it freshwater or saltwater? How does a stream get its water? Notes 1 Bodies of Water Earth and Space Topic: _______________________________________________ 2 Bodies of Water Earth and Space I. Vocabulary Matching A large body of fresh water flowing _____ A. ocean toward the ocean _____ A small, flowing body of fresh water B. lake A body of fresh water surrounded by _____ C. river land _____ A large body of salt water D. stream II. Identification Use the words above to answer each riddle. Write the answer on the lines. 1. I contain most of Earth’s water. I am big and salty. What am I? 2. I am long and wide. I contain fast-moving fresh water. What am I? 3. I am surrounded by land. I usually contain fresh water. What am I? 4. I am narrow and usually flow slowly. I am filled with fresh water. What am I? 1 Bodies of Water (A) Earth and Space Most of our drinking water comes from Earth’s freshwater sources. The graph below shows where Earth’s freshwater supply is located. Where is Our Freshwater? 8 7 6 5 4 3 2 1 Units of freshwater on Earth 0 Glaciers, ice caps Groundwater Lakes, rivers, streams, swamps *each unit = 10 percent Sources of freshwater 1. What source contains most of Earth’s freshwater? ______________________ 2. Can we drink frozen water? Circle one: Yes or No 3. How much more freshwater is contained in glaciers and ice caps than in groundwater? Write your answer out as a problem sentence: _________________ – __________________ = _______________ units Glaciers and ice caps Groundwater 4. Does more freshwater come from groundwater, or from lakes, rivers, streams, and swamps? Circle one: Groundwater Lakes, rivers, streams, and swamps 5. Where do you think groundwater is located? ___________________________ 1 Bodies of Water Earth and Space Scenario Bradley went to the beach with his family over the summer. He played in the sand and made a sand castle. He saw where the tide had brought in piles of seaweed on the beach. He went swimming in the water and felt the pull of the water’s current around his feet. He was really thirsty but knew he couldn’t drink the ocean water, so he got a drink out of the cooler. Prompt Thinking like a scientist, make a claim explaining whether Bradley was swimming in saltwater or freshwater. Claim ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Evidence ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ 1 REVIEW SHOW WHAT YOU KNOW WEEK 7 WEEKS 1–6 TM Amarillo Let’s N Review..
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