Copyright Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. four hundred ninety-nine 499

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1 four hundred ninety-nine 499

2 NC SCS Contents 1.01c Modeling Addition (Use after Lesson 2-1) 1.01c Modeling Subtraction (Use after Lesson 3-1) 5.03a Using Symbols (Use after Lesson 3-6) 4.01b Venn Diagrams (Use after Lesson 4-2) 4.01b, 4.01c Line Plots (Use after Lesson 4-6) 3.02a, 3.02b Identify Congruent Figures (Use after Lesson 11-3) 2.01b Equivalent Units (Use after Lesson 13-7) 500 five hundred

3 Name Modeling Addition Get Ready Main Idea I will model adding by joining two groups. To find the whole, you add the parts. Vocabulary add 4 3 Check Use WorkMat 3 and to add I can use counters to show each part. I can add the parts and count the counters to find the whole. How do you use to add? 8 Remember When you add, you join. NC SCS 1.01 c) Compose and decompose numbers (part-part-whole). five hundred one 501

4 Practice Use WorkMat 3 and to add Algebra Use Write the missing part five hundred two Math at Home Activity: Draw 2 red circles and 4 yellow circles. Have your child add to find the sum.

5 Name Modeling Subtraction Get Ready Main Idea I will use counters to model subtraction. When you know the whole and a part, you can subtract to find the other part. Vocabulary subtract Check Use WorkMat 3 and Subtract and find the missing part You have 10 counters in all. 3 of the counters are yellow. Do you have more than 7 red counters? Explain. No. 3 yellow counters and 7 red counters make 10 counters in all. NC SCS 1.01 c) Compose and decompose numbers (part-part-whole). 9 five hundred three 503

6 Practice Use WorkMat 3 and Subtract and find the missing part How many will you have left if you take 10 away from 10? Explain. Sample answer: 0, because you have taken all away five hundred four Math at Home Activity: Have your child use small objects such as buttons, beans, or pennies to show subraction.

7 Name Using Symbols Get Ready Main Idea I will find missing addends. Vocabulary missing addend symbol You can use a related subtraction fact to help you find a missing addend. Think? 9 + = = 4 The symbol is the missing or unknown number. So = 13 The equals 4. Check What does the equal? Draw dots to help = = 5 + = = 4 + = = 7 + = = 2. = 3 = 7 4. = 5 = 9 5. How do you find the missing number? Think of the related fact that solves the same problem. NC SCS 5.03 a) Represent a problem includin using symbols to represent unknown quantities. Also addresses 5.03 b) five hundred five 505

8 Practice What does the equal? = 9 + = 12 = 3 Remember The symbol is shown where the unknown number goes = + 4 = = = 8 = = = 6 + = = + 2 = 5 = 6 = = = = 8 = 9 = = Algebra There are 13 students with brown hair, red hair, or blonde hair. 7 have brown hair. 4 have red hair. How many have blonde hair? = 13 = 2 13 = 8 = five hundred six Math at Home Activity: Ask your child to tell you the subtraction fact that will help him or her add 7 + = 15.

9 Name Venn Diagrams Get Ready Main Idea I will use Venn diagrams to organize data. Vocabulary Venn diagram You can sort data using a Venn diagram. These figures are all rectangles. These figures are all purple. These figures are all purple and rectangles. Check Draw a line to show where each object belongs How else could you sort the leaves? edges of leaf, by size, etc. NC SCS 4.01 b) Organize, represent, and compare data using various representations including Venn diagrams, pictographs, tallies, and line plots. by colors, by five hundred seven 507

10 Practice Sometimes you can use a Venn diagram to solve a problem. 3. There are 45 people in the Dog & Cat Club. Twenty-one people only have dogs. Eighteen people only have cats. Six people have both. How many people have a dog? 27 people Dog & Cat Club Dogs Cats People that have both a dog and a cat Use the Venn diagram to solve problems How many birds are listed in this Venn diagram? 5. How many animals that do not fly are listed in this Venn diagram? 6. How many are birds, but are also animals that do not fly? Birds Seagull Dove Swan Eagle Goose Penguin Turkey Chicken Animals that do not fly Dog Elephant Deer Tiger 508 five hundred eight

11 Name Line Plots Get Ready Main Idea I will use line plots to organize data. Vocabulary line plot A line plot is another way to organize data. Line plots are used when you want to see how often a certain number occurs in your data. Mr. Sun s students marked their ages on a tally chart and a line plot. Look at the data in the line plot. Which number has the most Xs? 8 Tally Mr. Sun s Class Age How many students are 9 years old? 2 3. Both show data but the line plot allows you to campare Check data easier. Use the data from the tally chart to create the line plot. 1. Which number has the most Xs in this line plot? 2. Which pieces of data have the same number of Xs? 1 and 3 2 Number of Pets Tally 3. Compare the line plot to the tally chart. How are they alike and different? Mr. Sun s Class NC SCS 4.01 b) Organize, represent, and compare data using various representations including Venn diagrams, pictographs, tallies, and line plots. five hundred nine 509

12 Practice The students made a line plot. It shows how many hats they have. How many students have 2 hats? Number of Hats We Have Count the Xs above the number Number of Hats 6 students have 2 hats Use the line plot to answer the questions. 4. How many students have just 1 hat? 3 students 5. How many students have 3 hats? 4 students 6. How many students have more than 2 hats? 7 students 7. How many students have less than 2 hats? 4 students 8. How many students are there in all? 17 students 9. Write a sentence about the line plot. See students work. 510 five hundred ten

13 Name Practice The students made a line plot about the number of sweaters they have. Use their line plot to answer the questions. The Xs show Number of Sweaters We Have the number of students Number of Sweaters 10. How many students have 2 sweaters? 3 students 11. Which number has the most Xs? 12. Does anyone have 4 sweaters? 1 no 13. Which number has the fewest Xs? How many students have 1 sweater? 5 students 15. Add your information to the line plot. 16. Finish the line plot for Ashley. She needs to show that three friends each have 2 toy bears. See students work. Number of Toy Bears We Have Number of Toy Bears five hundred eleven 511

14 Practice Use the data from the tally chart to create the line plot. 17. What is the most money a person receives? $ Which amount is the most common? $6 Tally Friends Allowances Allowance $5 $6 $7 $8 $9 $ If you receive a $4 allowance, should you use the line plot to convince your parents to increase your allowance? Explain. $5 $6 $7 $8 $9 $10 See students work. 20. Ask 6 classmates how many pets they have. Record the data. Then make a line plot of the data. Name My Survey Number of Pets See students work five hundred twelve Math at Home Activity: Your child read data on a line plot. Ask your child to explain the line plot about pets.

15 Name Identify Congruent Figures Get Ready Main Idea I will identify congruent figures. What do you notice about the signs? Vocabulary congruent Congruent figures have the same shape and size. congruent not congruent congruent congruent not congruent not congruent NC SCS 3.02 a) Determine whether figures are congruent b) Recognize congruency in figures with different orientations. five hundred thirteen 513

16 Practice Use pattern blocks to find the congruent figures. Use this pattern block. Color the two congruent shapes Color the congruent figures Can a rectangle and a trapezoid be congruent? no Could a rectangle and a square be congruent? yes Explain your reasoning. Rectangles and trapezoids have different shapes. Rectangles and squares can have the same shape. 514 five hundred fourteen

17 Name Practice Color the congruent figures five hundred fifteen 515

18 Practice Color the congruent figures Look at the figure. If there is another rectangle that is congruent to the rectangle pictured, how long are its sides? Explain how you know. The congruent figure has 2 sides that are 16 inches long and 2 sides that are 8 inches long. I know because congruent figures must be the same shape and the same size. 8 inches 16 inches 516 five hundred sixteen Math at Home Activity: Give your child a handful of coins. Ask him or her to sort them into piles of congruent figures.

19 Name Equivalent Units Get Ready Main Idea I will use equivalent nonstandard units to measure. Vocabulary nonstandard unit measure length capacity weight You can use different units to measure. The pencil measures 6 about 6 long or 8 about 8 long. The cup holds 20 about 20 1 about 1. or The bottle weighs 25 about about 15. or NC SCS 2.01 b) larger units can be subdivided into equivalent units (partitioning) five hundred seventeen 517

20 Practice Find each item. Measure. Write your results. Item Unit of Measure 1. about long about long 2. weighs about weighs about 3. holds about holds about 4. about about 5. How do your measurements change when you use a smaller unit of measure? Explain. long long 518 five hundred eighteen

21 Name Practice Find each item. Measure. Write your results. 6. Item about Unit of Measure long about long 7. holds about holds about 8. weighs about weighs about about about weighs about weighs about long long five hundred nineteen 519

22 Practice Find three items to measure. Choose your unit of measure. Then measure and write your results. 11. Item Unit of Measure five hundred twenty