LESSON 9.9D One Doar PROFESSIONAL DEVELOPMENT PROFESSIONAL DEVELOPMENT LESSON AT A GLANCE Mathematics Forida Standard Te and write time. MAFS.1.MD.2.a.c Identify and combine vaues of money in cents up to one doar working with a singe unit of currency. Reate the vaue of pennies, dimes, and quarters to the doar (e.g., There are 100 pennies or ten dimes or four quarters in one doar.) (Students are not expected to understand the decima notation for combinations of doars and cents.) Digita Path itoos: Measurement estudent Edition Teaching for Depth HMH Mega Math About the Math Lesson Objective Show one doar in a variety of ways. Essentia Question How can you show the vaue of one doar with coins? Vocabuary doar, doar sign Materias MathBoard Some chidren may not understand that a one doar bi has a vaue of 100. Do the foowing activity to deepen chidren s understanding of one doar. Show chidren a penny and ask them to name the coin. Ask: What is the vaue of 1 penny? 1 Dispay a stack of 10 pennies. Ask: What is the vaue of 10 pennies? 10 Dispay 10 stacks of 10 pennies. Have chidren count by tens to find the vaue of 10 stacks of 10 pennies. 100 Expain that a one doar bi has the same vaue as 10 stacks of 10 pennies, or 100 pennies. Discuss with chidren how doar bis and coins are both usefu and why there is a need for both. Point out that it is easier to carry doar bis in a waet or pockets than to carry the same money amount in pennies. Daiy Routines Probem of the Day Number of the Day 65 Draw dimes and pennies to show 65. Ask chidren to expain how they counted to find the coins to show that amount. Vocabuary Buider Materias pay bis ($1 bis) Doar Distribute pay doar bis to chidren. Discuss with chidren how a doar bi and a coin are aike, and how they are different. Te chidren a doar has a vaue of 100 or. Write on the board and abe the doar sign. Expain that the doar sign shows that the number represents money. Te chidren that the doar sign and the cent symbo are never used together to write a money amount. Either symbo can be used, but never at the same time. Professiona Deveopment Video Podcasts FL29A Chapter 9
Differentiated Instruction Activities ELL Language Support Visua / Verba Sma Group Enrich Visua / Kinesthetic Partners Strategy: Identify Reationships Materias pay coins (dimes, quarters) Chidren understand anguage by making connections between new information and prior knowedge. Remind chidren that 100 is the same as one doar. Write 100,, and one doar on the board. Have chidren write these as we, and discuss the reationship between them. Have chidren count to find the tota vaue of 10 dimes. Then ask them to count different sets of coins that equa 100, or one doar. See ELL Activity Guide for eveed activities. Materias Spinner (6-section; see eteacher Resources), pay coins (pennies, dimes, quarters) Write the amounts 23, 17, 36, 42, 29, and 31 on the board. Have partners write the amounts in the sections of the spinner. 31 23 Partner A spins the pointer and shows that amount using coins. Then he or she finds how many 29 42 more cents are needed to show one doar, and shows that amount separatey. Partner B checks to make sure the amounts have a sum of one doar. Partners switch roes and repeat the activity. 17 36 3 2 1 Response to Intervention Reteach Tier 1 Logica / Mathematica Whoe Cass / Sma Group Tier 2 Visua / Kinesthetic Sma Group Materias pay coins (dimes, quarters) Review the vaues of the quarter, dime, and penny. Point out to chidren that each of these vaues is ess than one doar. Say: 100 cents is the same as one doar. Remind chidren that they can write this money amount as 100 or. Show chidren 10 dimes. Together, count by tens to 100. Since 10 dimes have a tota vaue of 100, 10 dimes have a tota vaue of one doar. Show 2 quarters and 5 dimes. Together, count on to find the tota vaue of the coins. Say: 2 quarters and 5 dimes have a tota vaue of one doar. Materias pay coins (pennies, dimes) Make 10 stacks of 10 pennies. Count the stacks by tens, pointing to each stack as you count. How many cents are there in a? 100 There are 100 cents in one doar. So, 100 pennies are the same as one doar. How many cents are there in one dime? 10 Show a row of 10 dimes. As a group, count by tens to 100. How many cents are there in a? 100 So, 10 dimes are the same as one doar. Make a row of 9 dimes and a row of 10 pennies beow it. As a group, count by tens for the dimes. How many cents are there in 9 dimes? 90 As a group, count by ones for the pennies. How many cents are there in 10 pennies? 10 Then count the two rows of coins as a group. How many cents are there in a? 100 So, 9 dimes and 10 pennies are the same as one doar. FL29B
LESSON 9.9D MAFS.1.MD.2.a.c Identify and combine vaues of money in cents up to one doar working with a singe unit of currency. Reate the vaue of pennies, dimes, and quarters to the doar (e.g., There are 100 pennies or ten dimes or four quarters in one doar.) (Students are not expected to understand the decima notation for combinations of doars and cents.) 1 ENGAGE One Doar Materias pay coins (pennies, dimes, quarters) Essentia Question How can you show the vaue of one doar with coins? Access Prior Knowedge Write 83 on the board and work with chidren to show the amount using quarters, dimes, and pennies. How did you count to find the tota vaue? Accept a reasonabe responses. Draw the coins. Write the tota vaue. Repeat the activity, having chidren show 57 with quarters and pennies. 2 TEACH and TALK GO Onine Check chidren s work. Animated Math Modes c Listen and Draw Read the instructions beow. Have chidren discuss their soutions. In the first box, draw 20 pennies. Count to find the tota vaue of the coins. Then write the tota vaue. 20 Describe how you counted to find the tota vaue. Possibe answer: I counted by tens. What is the tota vaue of the dimes? 40 Without drawing or counting more coins, how many pennies woud it take to show 40? Expain. 40 pennies; Possibe expanation: I know that 40 is twice as much as 20. Since 20 pennies show 20, twice as many pennies woud be needed to show 40. 40 Houghton Miffin Harcourt Pubishing Company Describe how you counted to find the tota vaue. Possibe answer: I counted by ones. What is the tota vaue of the pennies? 20 Read the foowing instructions to chidren: In the second box, draw 4 dimes. Count to find the tota vaue of the coins. Then write the tota vaue. Math Tak: 40 pennies; Possibe expanation: One penny has a vaue of 1, so 40 pennies have a vaue of 40. How many pennies have the same vaue as 40? Expain. FOR THE TEACHER In the first box, have chidren draw 20 pennies and then count to find the tota vaue. In the second box, have chidren draw four dimes and then count to find the tota vaue. FL29 Chapter 9 1_MFLAESE500785_C09L09D.indd 29 5/30/14 10:34:21 PM Standards Practice 9.9D Use Math Tak to focus on chidren s understanding of showing equivaent amounts with different types of coins. One Doar Lesson Check Circe coins to make. Possibe answers are given. Cross out the coins you do not use. 1. Which group of coins has a vaue of? 1. 2. Spira Review 2. Which addition sentence can you use to check the (Lesson 5.4) 11 2 3 5 8 1 3 5 11 31356 B 4 1 7 5 11 4 1 4 5 8 Houghton Miffin Harcourt Pubishing Company 3. Count forward. What number is missing? Chapter 9 (Lesson 6.1) 98, 99, 100,, 102 4. Draw more coins to show in a. Answers may vary. Check chidren s drawings for coins that have a tota vaue of 50. Chapter 9 FL29 1_MFLAEPB501683_C09L09D.indd 15 fi fteen PFL15 6/6/14 12:15:05 AM PFL16 96 97 101 103 Houghton Miffin Harcourt Pubishing Company subtraction? 3. sixteen 1_MFLAEPB501683_C09L09D.indd 16 6/6/14 11:01:47 AM
Mode and Draw One doar has the same vaue as 100 cents. doar sign 5 100 c Mode and Draw Read through the mode with chidren. How are 100 cents and one doar aike? Possibe answer: They have the same vaue. Point to the doar sign and identify the symbo for chidren. Describe where the doar sign is written in a money amount. Possibe answer: just before the doar amount Share and Show Draw the coins to show. Write the tota vaue. 1. quarters 25 25 25 25 Count 100 cents for one doar. c 3 PRACTICE Share and Show Guided Practice Exercises 1 2 connect to the earning mode. For Exercises 1 and 2, wi you need more dimes or more quarters to show one doar? Expain. more dimes; Possibe expanation: The vaue of a dime is ess than the vaue of a quarter, so I wi need more dimes to show one doar. Use Exercises 1 and 2 for Quick Check. 2. dimes 10 10 10 10 10 10 10 10 10 10 Houghton Miffin Harcourt Pubishing Company Quick Check 3 2 1 Rt I FL30 If a chid misses Exercises 1 and 2 Reteach 9.9D 3 2 1 Reteach Enrich 9.9D Enrich Then Differentiate Instruction with RtI Tier 1 Activity, p. FL29B Reteach 9.9D One Doar One doar has the same vaue as 100 cents. Count on to 100 to show. 25, 50, 75, 100 Draw more coins to show. Write the tota vaue. 1. 2. Reteach 10 10 25 25 Houghton Miffin Harcourt Pubishing Company RFL8 You can write one doar ike this: Check chidren s drawings. Check chidren s drawings. tota vaue Grade 1 Yo-Yo Coins How much more money does each chid need to buy the yo-yo? Draw the coins to sove. Possibe coins are shown. 1. Ea has these coins. 2. Brad has these coins. 3. Garrett has these coins. Writing and Reasoning Look at Exercise 1. a different group of coins that has the same tota vaue as the coins you drew. Some possibe answers: 5 nickes; 1 dime and 3 nickes; 1 dime, 1 nicke, and 10 pennies. Enrich Houghton Miffin Harcourt Pubishing Company Coins shoud have a tota vaue of 25. EFL8 25 90 5 1 1 1 1 Coins shoud have a tota vaue of 9. 10 1 1 1 1 Coins shoud have a tota vaue of 14. Grade 1 COMMON ERRORS Error Chidren may write incorrecty. Exampe In Exercise 1, chidren write the tota vaue as. Springboard to Learning Have = 100 written on the board as chidren work. Point out that the doar sign and the cent sign are never used at the same time to write a money amount. FL30
c On Your Own Independent Practice If chidren answer Exercises 1 and 2 correcty, assign Exercises 3 6. Probem In Exercise 6, chidren use higher-order thinking skis to determine the vaue of the given coins and then choose a set of coins to add in order to show in a. On Your Own Circe coins to make. Cross out the coins you do not use. 3. Possibe answers are given. Go Deeper Use the foowing activity to extend chidren s understanding of ways to make. In a math center, pace three bags and the foowing pay coins: 6 quarters, 8 dimes, and 20 pennies. Ask chidren to use the pay coins to make three sets of coins that each have a tota vaue of, and then pace each set inside of a bag. Then have another sma group check their work. 4. 5. Houghton Miffin Harcourt Pubishing Company 6. Draw more coins to show. Answers may vary. Chidren shoud draw a set of coins with a tota vaue of 55. Chapter 9 Lesson 9D FL31 FL31 Chapter 9
Mode Reason Make Sense PROBLEM SOLVING Use coins to sove. 7. Jackson has 4 pennies and 3 dimes. How much money does Jackson have? 8. Maddox has these coins. 56 He spent 1 quarter. How much money does he have now? Use quarters, dimes, and pennies. Show the amount in two ways. Draw and abe the coins. 9. 31 Some possibe answers: 1 quarter and 6 pennies; 3 dimes and 1 penny 34 c Probem Soving Unock the Probem In Exercises 7 8, chidren appy their understanding of the vaue of quarters, dimes, and pennies to sove the probems. Probem In Exercise 9, chidren use higher order thinking skis to show 31 in two ways. Test Prep Coach Test Prep Coach heps teachers identify common errors that chidren make. In Exercise 10, if chidren seected: 30, they counted a of the coins as dimes. 35, they forgot to count one of the quarters. 70, they counted the coins incorrecty. 4 SUMMARIZE 10. Test Prep Mary used these coins to buy a foder. What is the tota vaue of these coins? FL32 TAKE HOME ACTIVITY Have your chid draw a group of coins to show. 30 35 60 70 Houghton Miffin Harcourt Pubishing Company Essentia Question How can you show the vaue of one doar with coins? Possibe answer: There are many ways to show one doar with a group of coins, but each way has to have a tota vaue of 100 cents. Math Journa Draw coins to show one way to make using ony pennies and quarters. Differentiated Instruction Dif Di INDEPENDENT ACTIVITIES Differentiated Centers Kit Activities Dime Store Chidren compete purpe Activity Card 15 by showing sets of dimes and their vaues. Literature Games Ken s Coins Bank It Animated Math Chidren read the book Chidren practice Modes and use cues to find counting money. itoos hidden coins. HMH Mega Math Soar to Success Math e Student Edition FL32
T e ac h I N G S U P PO RT for For i da Lesson s Mathematics Forida Standards