Customary Units of Capacity вЂ“ Day 1 Focus: The student will identify objects that hold about a cup, pint, quart, and gallon. Background for teachers: Capacity is the measure of the amount of liquid a container can hold. Different units can be used to estimate or measure capacity. The most appropriate unit to use for measuring is often the one with which the measurement can be expressed using the smallest whole number. The purpose of students comparing the sizes of the containers in the following activity is to use a common unit (cup) to estimate the amount of liquid, sand, or rice each container will hold. It is not required that third grade students memorize conversions between units of measurements, this is a 4th and 5th grade TEK. Estimating capacity and using benchmarks lays the foundation for students to convert units of measurement in 4th and 5th grades. Materials: Measuring containers that hold a cup, pint, quart, and gallon (enough for small groups to each have a set), copies of Recording Sheet, water, rice, or sand for pouring into containers, random containers of different sizes including one that holds approximately 2 quarts (enough for each group of students to have 3 - 4 each); examples would be milk cartons from the cafeteria, water bottles of different sizes, Gatorade bottles, gallon milk cartons, pots Activity: 1. Remind students they have already learned to measure the volume of solid figures. Today, you will learn how to measure how much liquid a container will hold. 2. Show students the container that holds one cup. Explain that this container holds one cup. Ask students to talk with their group members to brainstorm what other containers hold about a cup. Discuss responses with the class. Sample responses may include a juice box, coffee cup, or a glass. 3. Hold up the cup container again, along with a 2-quart container. Remind students that the smaller container holds one cup of liquid. Ask students to estimate how many cups would fit in the 2-quart container and write their answers on their copy of the attached Recording Sheet. How could we find how many cups would fit into the 2quart container? Allow students to work with their group to find how many cups of water, rice, or sand will fit in the 2-quart container. Customary Units of Capacity вЂ“ Day 1 4. When most students are finished exploring, explain that the amount a container will hold is its capacity and that a cup is a customary unit of capacity. 5. Discuss how students found the amount of cups that would fit in the 2-quart container, demonstrating as you are discussing with the class. Students should fill in the actual measurement on their recording sheet when the class has decided the correct amount. 6. Repeat the activity, comparing how many cups each of the pint, quart, and gallon containers hold. Ask students to record their estimates on their Recording Sheet before measuring each of the items. Students may also find the capacity of other containers you have in the classroom. 7. Discuss estimates and measurements as students finish the investigation. Create an anchor chart to show how many cups a pint, quart, and gallon will hold. Remember, students do not need to memorize these. They will only need for benchmark purposes. Capacity Benchmarks Pint = 2 cups Quart = 4 cups Gallon = 16 cups 8. Homework: Customary Units of Capacity Customary Units of Capacity вЂ“ Day 1 Recording Sheet How many cups does each container hold? Container Estimate В Actual Measurement Name Reteaching 18-2 Customary Units of Capacity Capacity is the amount of liquid a container can hold. The containers show the different units of customary capacity. pint (pt) 1 pt П 2 c quart (qt) 1 qt П 2 pt Reteaching 18-2 cup (c) gallon (gal) 1 gal П 4 qt Choose the better estimate for each. 1. 2. 1 c or 1 gal 4. small water bottle 1 pt or 1 gal 3. 1 qt or 1 gal 5. bucket 1 c or 1 gal 1 c or 1 qt 6. bathroom sink 2 c or 2 gal В© Pearson Education, Inc. 3 7. Reasoning Suppose you want to fill a pot with 1 gallon of water. You can use a measuring cup the size of a cup or a quart. Which would be best to use? Explain your reasoning. Topic 18 33 Customary Units of Capacity вЂ“ Day 2 Focus: The student will identify objects that hold about a cup, pint, quart, and gallon. Materials: Measuring containers that hold a cup, pint, quart, and gallon (enough for small groups to each have a set), containers from the previous day Activity: 1. Ask each group of students to place their set of containers in order from the one that has the greatest capacity to the one that has the least capacity. Discuss placement of the containers with the class. 2. Read and discuss Room for Ripley with the class. Teacher should take plenty of time when discussing the equivalency chart in the book. If needed, show students how the comparisons are true by asking students to use containers to prove. Do not require students to memorize the equivalencies. 3. Students will play Capacity Compare with a partner. After students complete the activity, discuss which comparisons are more difficult than others. 4. Students will complete the daily practice sheet individually, Customary Units of Capacity. 5. Homework: Texas Student Activity Book, pp. 24, 60 and/or attached page. Customary Units of Capacity вЂ“ Day 2 Capacity Compare Materials Deck of cards, one set per pair Pencils Recording Sheet Directions: 1. Teacher should review the cards with students to ensure they know what picture is on each card. 2. Shuffle the cards. 3. Deal out all of the cards. Each student may have their own deck of cards for the game to last longer. 4. Each player turns over one card at the same time. 5. Compare the two measures. 6. Record the comparison on your Capacity Compare Recording Sheet. 7. Repeat directions 3-5. 8. Play until time runs out or until the recording sheet is full. Customary Units of Capacity вЂ“ Day 2 Capacity Compare Cards 1 2 4 5 7 8 3 6 9 Customary Units of Capacity вЂ“ Day 2 Capacity Compare Cards 10 13 16 11 12 14 15 17 18 Customary Units of Capacity вЂ“ Day 2 Capacity Compare Recording Sheet Your card number Compare Your partnerвЂ™s card number Write three comparisons of your own using words. Object Compare Object Example: cup < water bottle Name Practice 18-2 Customary Units of Capacity Choose the better estimate for each. 1. 2. 5. coffee pot 1 c or 1 gal 3 qt or 3 gal 6. bowl of soup 1 pt or 1 gal 4. 1 pt or 1 gal 7. thermos 1 qt or 1 gal 10 qt or 10 gal 8. small milk carton 1 c or 1 gal Choose the better unit to measure the capacity of each. 9. hot tub qt or gal 10. shampoo bottle 11. bucket pt or gal c or gal 12. sports cooler qt or gal 13. Reasonableness John has 4 cups filled with fruit juice. He said that he has a gallon of fruit juice. Is his statement reasonable? Explain why or why not. 14. Estimation Which measurement best describes the capacity of a kitchen sink? 5 quarts 5 pints 5 cups 5 gallons В© Pearson Education, Inc. 3 Practice 18-2 1 c or 1 gal 3. 34 Topic 18 Day 159 Daily Practice Name Quick Check Answer the questions below. 18-2 1. Which is NOT a customary unit used to measure capacity? pint cube quart 2. Which of these objects probably holds about 1 pint? bath tub soup pot coffee pot teaspoon 3. Which measurement best describes the capacity of a juice box you might bring with your lunch? 1 cup 1 pint 1 quart 1 gallon 4. Writing to Explain Felix has a goldfish bowl. He wonders about its capacity. He has two tools he might use to find out: a 1-cup mug and a 1-gallon jug. Which tool should he use to find the capacity of the bowl? Explain your thinking. В© Pearson Education, Inc. 3 Quick Check 18-2 gallon 32 Topic 18 Day 159 Homework Metric Units of Capacity Focus: The student will estimate and measure the capacity of various containers using metric units. Background for teachers: Capacity is the measure of the amount of liquid a container can hold. Different units can be used to estimate or measure capacity. The most appropriate unit to use for measuring is often the one with which the measurement can be expressed using the smallest whole number. The purpose of students comparing the sizes of the containers in the following activity is to use a common unit to estimate the amount of liquid, sand, or rice each container will hold. A milliliter is one thousandth of a liter. The relationship commonly given to third and fourth graders is 1,000 milliliters = 1 liter so they can better understand the relative sizes of the units. However, they are not expected to convert measurements from one unit to the other. Estimating capacity and using benchmarks lays the foundation for students to convert units of measurement in 4th and 5th grades. Materials: Several measuring containers that hold a liter or more (example would be a water bottle), 4-liter containers, and small containers that hold less than half of a liter (enough for small groups to each have a set), water, rice, or sand for pouring into containers, recording sheet Activity: 1. Remind students they have already learned to find the approximate capacity of containers using customary units. Today, you will learn how to find the capacity of containers using metric units. 2. Show students the one liter water bottle and ask students to name something that has a capacity about the same as the water bottle. Students should talk with group members to brainstorm any answers. Sample response may be a shampoo bottle. Discuss all responses with the class. 3. Hold up the liter container again, along with the 4-liter container. This water bottle has a capacity of about 1 unit. How can you use this water bottle to estimate the capacity of the larger container? How can you check your estimate? Allow students to work with their group to find how many liters of water, rice, or sand will fit in the 4-liter container. 4. When most students are finished exploring, explain that two metric units of capacity are liter and milliliter. Write the metric units on the board with their abbreviations. There are 1,000 milliliters in a liter. Which unit is smaller? Explain there are approximately 20 drops from an eyedropper in a milliliter or about a spoonful. Do you think a container would hold more milliliters or more liters? Metric Units of Capacity 5. Discuss how students found the amount of liters that would filled the 4-liter container, demonstrating as you discuss with the class. Students should fill in the actual measurement on their recording sheet when the class has decided the correct amount. 6. Have students work in pairs to estimate and find the capacity of larger containers. 7. Discuss estimates and measurements as students finish the investigation. Show a few containers to students and ask if they should use milliliters or liters to measure the capacity. 8. Show students the pictures attached. Would you measure the capacity using milliliters or liters? About how many units do you think would fit inside this container? Create an anchor chart to show the relationship between a milliliter and liter. Teacher might want to glue each picture under the appropriate unit for visual support. Capacity Benchmarks 1,000 milliliters = 1 liter 1,000 mL = 1 L 9. Students will play Toss and Talk with a partner. See directions on attached page. 10. Homework вЂ“ Metric Units of Capacity Metric Units of Capacity Recording Sheet How many liters does each container hold? Container Estimate В Actual Measurement Metric Units of Capacity вЂ“ Day 1 Capacity Compare Cards 1 2 4 5 7 8 3 6 9 Metric Units of Capacity вЂ“ Day 2 Capacity Compare Cards 10 13 16 11 12 14 15 17 18 IVa` В© Pearson Education # VgZ dg ` ndjg i ]^c`^c\l]^aZndjl Get Started or Get 10 squares in one color and 10 in another color. Get two number cubes. Take turns with another player or team. Talk about math as you play! At Your Turn Toss two number cubes. Add the dots. Find your toss below. Follow the directions. Explain your thinking. Cover the answer. If the answer is taken, lose your turn. Have fun! Toss Read the name of the container. Tell if its capacity is more than 1 liter or less than 1 liter. Explain. 2 7 bucket bathroom sink 8 lake 3 bathtub 9 paper cup 4 swimming pool 10 ketchup bottle 5 juice glass 11 soup pot 6 soup bowl 12 mug в�… 3 H] more than 1 liter less than 1 liter less than 1 liter more than 1 liter less than 1 liter less than 1 liter more than 1 liter less than 1 liter more than 1 liter less than 1 liter more than 1 liter more than 1 liter more than 1 liter less than 1 liter more than 1 liter less than 1 liter How to Win You win if you are the first to get four connected rectangles, like: If you have more time Play again! Center Activity 18-4 Center Activity 18-4 EVg icZg Topic 18 7 Name Reteaching 18-4 Metric Units of Capacity Two units of capacity in the metric system are milliliters (mL) and liters (L). 1 liter П 1,000 milliliters Milliliters are used to measure very small amounts of liquid. A liter is slightly larger than a quart. Many beverages are sold in 1-liter and 2-liter bottles. 1 teaspoon П 5 milliliters Reteaching 18-4 Choose the better estimate for each. 1. 2. 350 mL or 35 L 4. small milk carton 250 mL or 25 L 3. 100 mL or 10 L 5. soup can 500 mL or 5 L 30 mL or 3 L 6. sports cooler 4 L or 40 L В© Pearson Education, Inc. 3 7. Reasonableness Which is the better unit to use to measure the capacity of a bathtub: milliliters or liters? Explain your choice. Day 16018Homework Topic 45 Metric Units of Capacity, Day 2 Focus: The student will estimate and measure the capacity of various containers using metric units. Materials: Assorted containers: one set of 4 вЂ“ 5 containers for each group of 3 вЂ“ 4 students, water, rice, or sand for pouring into containers, Toss and Talk pages (one per pair) Activity: 1. Discuss homework from the previous lesson to clarify any questions. 2. Ask each group of students to place their set of containers in order from the one that has the greatest capacity to the one that has the least capacity. Discuss placement of the containers with the class. 3. Students will play Toss and Talk with a partner. After students complete the activity, discuss which capacity estimates were more difficult than others. 4. Students will complete Metric Units of Capacity. 5. Homework: Texas Student Activity Book, pp. 25, 30, or 61 в�… в�… EVg icZg Center Activity 18-4 IVa` H] # VgZ dg ` ndjg i ]^c`^c\l]^aZndjl Get Started or Get 10 squares in one color and 10 in another color. Get two number cubes. Take turns with another player or team. Talk about math as you play! At Your Turn Toss two number cubes. Add the dots. Find your toss below. Follow the directions. Explain your thinking. Cover the answer. If the answer is taken, lose your turn. Have fun! Toss Read the question. Choose the better estimate. Explain your answer. 7 Is the capacity of a bathtub about 150 milliliters or 150 liters? 2 Is the capacity of a pen cap about 1 milliliter, or 1 liter? 8 Is the capacity of a baby bottle about 150 milliliters or 150 liters? 3 Is the capacity of a thermos about 1 milliliter, or 1 liter? 9 Is the capacity of a mug about 250 milliliters or 25 liters? 4 Is the capacity of a pitcher about 1 milliliter, or 1 liter? 10 Is the capacity of a teacup about 250 milliliters or 25 liters? 5 Is the capacity of a glass of water about 250 milliliters, or 25 liters? 11 Is the capacity of a measuring spoon about 25 milliliters or 25 liters? 6 Is the capacity of a fish tank about 250 milliliters, or 25 liters? 12 Is the capacity of a soup ladle about 150 milliliters or 150 liters? 250 mL 150 L 1L 150 mL 250 mL 1 mL 250 mL 25 mL 1L 150 L 25 L 250 mL 150 mL 250 mL 150 mL How to Win 8 Topic 18 You win if you are the first to get four connected rectangles, like: If you have more time Play again! Center Activity 18-4 В© Pearson Education 3 25 L Name Practice 18-4 Metric Units of Capacity Choose the better estimate for each. 1. 2. 2 mL or 2 L 2 mL or 2 L 4. 5 mL or 5 L 6. coffee cup 7. thermos 250 mL or 25 L 2 L or 20 L 1 mL or 1 L 8. pitcher 40 mL or 4 L Choose the better unit to measure the capacity of each. 9. tea cup mL or L 10. bath tub mL or L 11. glass of juice mL or L 12. washing machine mL or L 13. Reasoning A liter is equal to 100 centiliters. Is a centiliter a greater measure than a milliliter? Explain. 14. Estimation Which is the best estimate for the capacity of a large bottle of water? Fresh Springs Water 1L 46 Topic 18 400 mL 4L 40 mL Daily Practice, Day 161 В© Pearson Education, Inc. 3 Practice 18-4 5. kitchen sink 2 L or 20 L 3.

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