8
25A Chapter 1 LESSON 1.3 About the Math Professional Development If Children Ask Some children may want to know why they have to model a problem in two ways—first with counters and then with a drawing of the counters—before they write a number sentence. They may not understand that this process helps build a strong conceptual understanding of addition. Help children understand that by using the counters to model a problem situation, they can see what is happening in the problem, move the counters to show the action of people or objects in a problem, and easily make changes in the number of counters and the way they are positioned. Explain that drawing a picture of the counters gives them a record of their work. Once their work is recorded, children use the drawing to help write a number sentence to solve the problem. Then children can reuse the counters for the next problem. Hands On • Model Putting Together LESSON AT A GLANCE Professional Development Videos Interactive Student Edition Personal Math Trainer Math on the Spot iTools: Counters HMH Mega Math Learning Objective Use concrete objects to solve “adding to” addition problems. Language Objective Children ask a partner to explain how to model putting together, and listen to the response for accuracy. Materials MathBoard, two-color counters FCR Focus: Common Core State Standards 1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. MATHEMATICAL PRACTICES MP1 Make sense of problems and persevere in solving them. MP4 Model with mathematics. MP5 Use appropriate tools strategically. FCR Coherence: Standards Across the Grades Before K.OA.A.1 K.OA.A.2 Grade 1 1.OA.A.1 After 2.OA.A.1 FCR Rigor: Level 1: Understand Concepts....................Share and Show ( Checked Items) Level 2: Procedural Skills and Fluency.......On Your Own Level 3: Applications..................................Think Smarter and Go Deeper FCR For more about how GO Math! fosters Coherence within the Content Standards and Mathematical Progressions for this chapter, see page 9J. FOCUS COHERENCE RIGOR

Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

  • Upload
    others

  • View
    1

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

25A Chapter 1

LESSON 1.3

About the MathProfessional Development

If Children AskSome children may want to know why they have to model a problem in two ways—first with counters and then with a drawing of the counters—before they write a number sentence. They may not understand that this process helps build a strong conceptual understanding of addition.

Help children understand that by using the counters to model a problem situation, they can see what is happening in the problem, move the counters to show the action of people or objects in a problem, and easily make changes in the number of counters and the way they are positioned. Explain that drawing a picture of the counters gives them a record of their work. Once their work is recorded, children use the drawing to help write a number sentence to solve the problem. Then children can reuse the counters for the next problem.

Hands On • Model Putting Together

LESSON AT A GLANCE

Professional Development Videos

Interactive Student Edition

Personal Math Trainer

Math on the Spot

iTools: Counters

HMH Mega Math

Learning ObjectiveUse concrete objects to solve “adding to” addition problems.

Language ObjectiveChildren ask a partner to explain how to model putting together, and listen to the response for accuracy.

MaterialsMathBoard, two-color counters

F C R Focus:Common Core State Standards1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together,

taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

MATHEMATICAL PRACTICESMP1 Make sense of problems and persevere in solving them. MP4 Model with mathematics.MP5 Use appropriate tools strategically.

F C R Coherence:Standards Across the GradesBeforeK.OA.A.1 K.OA.A.2

Grade 11.OA.A.1

After2.OA.A.1

F C R Rigor:Level 1: Understand Concepts....................Share and Show ( Checked Items)Level 2: Procedural Skills and Fluency.......On Your OwnLevel 3: Applications..................................Think Smarter and Go Deeper

F C R For more about how GO Math! fosters Coherence within the Content Standards and Mathematical Progressions for this chapter, see page 9J.

FOCUS COHERENCE RIGOR

Page 2: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

ENGAGE1

Lesson 1.3 25B

with the Interactive Student Edition

Essential Question¿Cómo haces un modelo de lo que estás juntando?

Making ConnectionsAsk children to tell what they know about trees and leaves.

¿Creen que sería fácil contar las hojas de un árbol? Las respuestas variarán. Respuesta posible: Hay demasiadas hojas para contarlas. ¿Podrían contar las hojas si cayeran algunas al piso? Las respuestas variarán. Imaginen que las hojas del piso son de diferentes colores. ¿Cómo deberían agrupar las hojas para sumarlas? Las respuestas variarán.

Learning ActivityGuide the children to add by putting amounts together.

• ¿Cuántas hojas rojas hay? 5

• ¿Cuántas hojas amarillas hay? 3

• ¿Qué quiere saber Avery? el número de hojas que cayeron del árbol

• ¿Qué puede hacer para hallar cuántas hojas hay en total? Anímelos a debatir. Las respuestas variarán.

Literacy and MathematicsChoose from one or more of the following activities.

• Write a class story about counting leaves as they fall.

• Have children create scenarios about counting different numbers of leaves and solve as a class.

Daily RoutinesCommon Core

Fluency BuilderCount the Days• Each day of school, ask the class to count

to the day’s date by ones.

• After counting discuss how to write the day’s number.

• Have children tell how many ones are in the date.

Problem of the Day 1.3Calendar Math Observen una semana del calendario. ¿Cuántos días hay que ir a la escuela?

Have children use the numbers to write an addition sentence

showing how many days are in the whole week.

Vocabulary sumar

FPOMay

1 2 3 4

8 9 10 11

12 13 14 15 16 17 18

19 20 21 22 23 24 25

26 27 28 29 30 31

5 6 7

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

How do you model putting together?

Interactive Student EditionMultimedia Glossary e

Page 3: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

Escucha y dibuja Escucha y dibujaEscucha y dibuja

Estándarescomunes

PRÁCTICAS MATEMÁTICAS 1Charla

matemática

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

NombreLección 1.3

MANOS A LA OBRA

Hacer un modelo de lo que juntasPregunta esencial ¿Cómo haces un modelo de loque estás juntando?

Usa o un iTool para representar el problema. Haz un dibujo de tu modelo.Escribe los números y el enunciado de suma.

Capítulo 1 veinticinco 25

2 — crayones rojos 3 — crayones amarillos

Hay 5 — crayones.

Operaciones y pensamiento algebraico—1.OA.A.1

PRÁCTICAS MATEMÁTICASMP1, MP4, MP5

2 —

C + 3 — C = 5 —

Manos ala obrararManos ala obra

PARA EL MAESTRO • Lea el siguiente problema. Hay 2 crayones rojos y 3 crayones amarillos. ¿Cuántos crayones hay?

Describe cómo te ayudael dibujo a escribir elenunciado de suma.

Charla matemática: Respuesta posible: Dibujé 2 fichas rojas porque hay 2 crayones rojos. Dibujé 3 fichas amarillas porque hay 3 crayones amarillos. Escribo esos números en el enunciado numérico. Luego escribo la suma.

EXPLORE2

LESSON 1.3

Enrich 1.3Reteach 1.31

2

3

Recursos del capítulo Refuerzo© Houghton Mifflin Harcourt Publishing Company

1-25

Lección 1.3RefuerzoNombre

Hacer un modelo de lo que juntas

Usa para sumar dos grupos. Junta los grupos para hallar cuántos hay.

Hay 3 perros marrones.

Hay 1 perro blanco.

¿Cuántos perros hay?

4 — perros

Usa para resolver. Haz un dibujo que muestre tu trabajo. Escribe cuántos hay.

1. Hay 4 osos negros y 3 osos marrones. ¿Cuántos osos hay?

7 osos 4 + 3 = 7

2. Hay 6 flores rojas y 2 flores blancas. ¿Cuántas flores hay?

8 flores 6 + 2 = 8

3 + 1 = 4

© Houghton Mifflin Harcourt Publishing Company

Nombre

1-26Recursos del capítulo

Lección 1.3EnriquecimientoNombre

Enriquecimiento1-26

Emparejar para hallar el totalEmpareja los problemas de suma que tienen el mismo total.

1. Hay 2 calcetines negros y 4 calcetines blancos. ¿Cuántos calcetines hay?

6

Hay 2 árboles pequeños y 1 árbol grande. ¿Cuántos árboles hay?

3

2. Hay 1 silla grande y 2 sillas pequeñas. ¿Cuántas sillas hay?

3

Hay 5 mariposas negras y 2 mariposas blancas. ¿Cuántas mariposas hay?

7

3. Hay 4 barcos azules y 3 barcos amarillos. ¿Cuántos barcos hay?

7

Hay 3 gatos blancos y 3 gatos grises. ¿Cuántos gatos hay?

6

Escribir y razonar Escribe un nuevo problema de suma para uno de los totales. Haz un dibujo que muestre el problema.

Revise el trabajo de los niños.

DifferentiatedInstruction

25 Chapter 1

Listen and DrawMaterials two-color counters

Read the problem aloud to the class.Hay 2 crayones rojos y 3 crayones amarillos. ¿Cuántos crayones hay?

• ¿Qué saben? Hay 2 crayones rojos y 3crayones amarillos.

• ¿Qué deben hallar? cuántos crayones hay

• ¿Cómo pueden mostrar 2 crayones rojos? Puedo usar 2 fichas rojas

• ¿Cómo pueden mostrar 3 crayones amarillos? Puedo usar 3 fichas amarillas

Have children use two-color counters or an iTool to show the number of red and yellow crayons. iTools can be found at www.thinkcentral.com.• ¿Cómo pueden mostrar 2 crayones rojos?

Las respuestas de los niños deben describir una representación de dos con la herramienta que eligieron.

• ¿Cuántas fichas dibujarán para mostrar 3 crayones amarillos? Las respuestas de los niños deben describir una representación de tres con la herramienta que eligieron.

• ¿Qué enunciado de suma pueden escribir para mostrar el problema? 2 + 3 = 5

MathTalk MP1 Make sense of problems

and persevere in solving them. Use Math Talk to focus on children describing their understanding of using the drawing to write an addition sentence.

• ¿Cómo saben qué poner en el primer círculo? Respuesta posible: Pongo el signo más porque estoy sumando.

ELL Strategy: Elicit Prior Knowledge

Children build on their counting skills to solve “putting together” addition problems.Read the following problem:• There are 3 red counters and 4 yellow

counters. How many counters are there? 7• You can count 7 counters. We can say 3 add

4 is 7.Have children repeat. Write the number sentence 3 + 4 = 7.• There are 7 counters.Repeat with different addition problems. Prompt children to say the number sentence and provide support as needed.

1.OA.A.1 Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

HandsOn

Page 4: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

EXPLAIN3

p yComparte y muestComparte y muestra MATHBOARDMATHBOARD

Representa y dibujaRepresenta y dibuja

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

26 veintiséis

Hay 2 libros pequeños y 1 libro grande. ¿Cuántos libros hay?

Usa para resolver. Haz un dibujo que muestre tu trabajo. Escribe el enunciado numérico y cuántos hay.

1. Hay 4 lápices rojos y 2 lápices verdes. ¿Cuántos lápices hay?

6 — lápices

2. Hay 5 tazas azules y 3 tazas amarillas. ¿Cuántas tazas hay?

8 — tazas

Suma para hallar cuántos libros hay.

2 —

C + 1 — C = 3 — 3 — libros

4 —

C 1 2 — C 5 6 —

5 —

C 1 3 — C 5 8 —

MATHEMATICAL PRACTICES

Quick Check

If

Rt I RRR1

2

3

Then

a child misses the checked exercise(s)

Differentiate Instruction with • Reteach 1.3

• Personal Math Trainer 1.OA.A.1

• RtI Tier 1 Activity (online)

COMMON ERRORS

Lesson 1.3 26

Model and DrawMP4 Model with mathematics. Work through the model with children.• ¿Qué deben hallar para resolver el

problema? Debo hallar el número de libros.

• ¿Qué representa el grupo de 2 fichas? ¿Y la otra ficha? 2 libros pequeños; 1 libro grande

• ¿Cómo pueden hallar el número de libros? Puedo contar todas las fichas. Hay 3 fichas, por lo tanto, hay 3 libros.

Share and Show MATHBOARDMATHBOARDMBMMMBBBMATHABOARDMMMAAATHATHTHHAAAAAAAAATTAAAABOARDBOARDBOARD

Have children complete Exercises 1 and 2 by writing an addition sentence.• En el Ejercicio 1, ¿cómo anotaron los 4

lápices rojos y los 2 lápices verdes? Dibujé 4 fichas para mostrar los 4 lápices rojos y 2 fichas para mostrar los 2 lápices verdes. Escribí un enunciado de suma. Conté todas las fichas para hallar la suma.

• ¿Qué significan los signos? Respuesta posible: El signo más significa sumar. El signo de igualdad significa el total.

Use the checked exercise(s) for Quick Check. Children should use their MathBoards to show their solutions.

Error Children may draw the wrong number of counters for the addends.

Example For Exercise 1, children draw 4 counters to show red pencils and 4 counters to show green pencils.Springboard to Learning Have children show each addend with counters. Have them draw the counters on their page. Point to the counters, and have children say the number. Then point to their drawings, and have children count to see if they have drawn the correct number.

Advanced Learners

Materials drawing paper, crayons

• Invite children to draw groups of things that may be at home, such as family members, pets, tables, or chairs.

• Each child should present putting together problems based on the drawing for other classmates to solve.

Visual / KinestheticIndividual / Partners

Page 5: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

Nombre

Capítulo 1 • Lección 3 veintisiete 27

PRÁCTICAMATEMÁTICA 4 Escribe una ecuación Usa para resolver. Haz un

dibujo que muestre tu trabajo. Escribe el enunciado numérico y cuántos hay.

3. Hay 3 gatos pequeños y 4 gatos grandes. ¿Cuántos gatos hay?

7 — gatos

4. Hay 6 cubos rojos y 3 cubos azules. ¿Cuántos cubos hay?

9 — cubos

5. Hay 2 flores rojas y 8 flores amarillas. ¿Cuántas flores hay?

10 — flores

6. MÁSPIENSA Hay 4 niños y 4 niñas corriendo. Luego llegan dos personas más. Hay el mismo número de niños y niñas. ¿Cuántos niños y niñas están corriendo?

3 —

C

1 4 — C 5 7 —

6 —

C

1 3 — C

5 9 —

2 — C

1 8 — C

5 10 —

Por tu cuePor tu cuePor tu cuenta MATHBOARDMATHBOARD

5 — niñas y 5 — niños

Math on the Spot videos are in the Interactive Student Edition and at www.thinkcentral.com.

27 Chapter 1

On Your Own MATHBOARDMATHBOARDMBMMMBBBMATHABOARDMMMAAATHATHTHHAAAAAAAAATTAAAABOARDBOARDBOARD

MP4 Model with mathematics. If children answered Exercises 1 and 2 correctly, assign Exercises 3–6. As on the previous page, allow children to use counters to help find the answers to these problems.

SMARTER

Exercise 6 requires children to use higher order thinking skills and/or multiple steps to solve this problem. First, children find how many boys and girls are running by adding 4 boys and 4 girls, and then by adding two more children. Then they figure out how many are boys and how many are girls by making sure each group has the same number.

DEEPER

MP2 Reason abstractly and quantitatively. Begin a class discussion comparing addition problems that use putting together and those that use adding to. Ask children to tell how these two types of addition problems are alike and how they are different. You might have children make up their own story problems to help with their explanations.MP1 Make sense of problems and persevere in solving them.• ¿Cómo saben que un problema trata sobre la

suma? Respuesta posible: Hablé sobre un grupo y otro grupo y otro grupo más y los junté.

4 ELABORATE

Math on the Spot Video TutorUse this video to help children model and solve this type of Think Smarter problem.

Page 6: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

Resolución de problemas MatemáticasESCRIBE

PRÁCTICAS MATEMÁTICAS Estándarescomunes

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

28 veintiocho

8. Usa para resolver tu problema.Haz un dibujo que muestre tu trabajo. Escribe el enunciado numérico.

C — C

ACTIVIDAD PARA LA CASA • Pida a su niño que reúna un grupo de hasta 10 objetos y los use para inventar problemas de suma.

4 —

C 1 4 — C 5 8 —

7. MÁSPIENSA Escribe tu propio problema de suma.

9. MÁSPIENSA Dibuja para resolver. Escribe el enunciado numérico y cuántos hay.

Hay 4 manzanas amarillas y 4 manzanas rojas. ¿Cuántas manzanas hay?

8 — manzanas

Respuesta posible: Hay 6 muñecas grandes y 2 muñecas pequeñas. ¿Cuántas muñecas hay?

Respuesta posible: 6 + 2 = 8

Differentiated Centers Kit

DIFFERENTIATED INSTRUCTION INDEPENDENT ACTIVITIESD

MATHEMATICAL PRACTICES

Lesson 1.3 28

Children practice one-digit addition and review basic facts to 8.

GamesAddition Bingo

Children read the book and add the number of children until they get ten.

LiteratureJoin Us

Children complete orange Activity Card 3 by reviewing the concept of addition and modeling addition sentences.

ActivitiesSum Sentences

Essential QuestionReflect Using the Language Objective Have children listen for accuracy to a partner’s answer to the Essential Question.¿Cómo haces un modelo de lo que estás juntando? Respuesta posible: Uso fichas para mostrar los números del problema. Luego dibujo las fichas y cuento cuántas hay para escribir un enunciado de suma.

Math Journal Math

Escriban su propio problema de suma. Dibujen fichas que les ayuden a resolverlo.

EVALUATE5 Formative Assessment

Have children complete Exercises 7 and 8. Ask them to describe different addition situations.

SMARTER

MP1 Make sense of problems and persevere in solving them. For Exercise 7, encourage children to look back at their lesson pages to review the kinds of addition story problems they have solved already. Children can use ideas from these problems to help them write their own addition story problem.

SMARTER

Exercise 9 assesses children’s ability to explain how to put together objects to find the answer. Children who do not write a correct addition sentence may not understand how to write the parts of a whole when the addends are the same. Point out to children that the number of red apples and the number of yellow apples is the same. They will write the same number two times in their addition sentence.

Problem Solving • Applications

Page 7: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

Extend the Math Activity

Resolución de problemasResolución de problemas

Estándarescomunes

© H

ough

ton

Mif

flin

Har

cour

t Pub

lishi

ng C

omp

any

Nombre

3. Escribe tu propio problema de suma.

Capítulo 1 veintinueve 29

Práctica y tareaLección 1.3

Hacer un modelo de lo que juntas

Usa para resolver. Haz un dibujo que muestre tu trabajo. Escribe el enunciado numérico y cuántos hay.

1. Hay 2 perros grandes y 4 perros pequeños. ¿Cuántos perros hay?

6 — perros 2 — + 4 — = 6 —

2. Hay 3 crayones rojos y 2 crayones verdes. ¿Cuántos crayones hay?

5 — crayones 3 — + 2 — = 5 —

ESTÁNDAR COMÚN—1.OA.A.1 Representan y resuelven problemas relacionados a la suma y a la resta.

4. MatemáticasESCRIBE Escribe tu propio problema de suma. Dibuja fichas para ayudarte a resolver.

Revise el trabajo de los niños.

Respuesta posible: Hay 2 gatos grandes y 2 gatos pequeños. ¿Cuántos gatos hay?

Revise el trabajo de los niños.

Revise el trabajo de los niños.

29 Chapter 1

Practice and HomeworkUse the Practice and Homework pages to provide children with more practice of the concepts and skills presented in this lesson. Children master their understanding as they complete practice items and then challenge their critical thinking skills with Problem Solving. Use the Write Math section to determine children’s understanding of content for this lesson. Encourage children to use their Math Journals to record their answers.

Story ProblemsMaterials Picture Cards (see eTeacher Resources), two-color counters

Investigate Group children and distribute the Picture Cards. Have one child in the group tell a story problem about a picture card, while group members use and draw counters to show the problem. Repeat until each child has had a turn to tell a story problem. Math Talk Use the following questions to guide children.

• ¿Qué necesitan hallar? cuántos hay

• ¿Qué representa cada ficha? Respuesta posible: Cada ficha representa 1 objeto.

• ¿Cómo les ayudan las fichas a resolver el problema? Respuesta posible: Puedo hacer un modelo del problema y luego contar todas las fichas para hallar cuántos hay.

• ¿En qué son iguales representar con fichas e ilustrar las fichas? Respuesta posible: Ambas formas muestran cuántos hay.

Summarize Children learn that using counters to model each problem helps them find how many. Also, drawing the counters is an easy way to represent story problems.

Page 8: Hands On • Model Putting Together · • Write a class story about counting leaves as they fall. • Have children create scenarios about counting different numbers of leaves and

PRACTICA MÁS CON ELEntrenador personal en matemáticas

© H

ough

ton

Mif

flin

Har

cour

t Pub

lishi

ng C

omp

any

30 treinta

Repaso de la lección (1.OA.A.1)

1. Usa para resolver. Dibuja para mostrar tu trabajo. Escribe el enunciado numérico y cuántos hay. Hay 3 gatos negros y 2 gatos marrones. ¿Cuántos gatos hay?

— gatos 3 — + 2 — = 5 —

2. Usa para resolver. Dibuja para mostrar tu trabajo. Hay 4 flores rojas y 3 flores amarillas. ¿Cuántas flores hay?

— flores 4 — + 3 — = 7 —

Repaso en espiral (1.OA.A.1)

3. Usa para mostrar lo que agregas. Dibuja los . Escribe la suma. 6 tortugas y 3 tortugas más.

6 + 3 = 9 —

4. Dibuja el . Escribe la suma. 2 peces y 1 pez más.

2 + 1 = _

5

7

Revise el trabajo de los niños.

Revise el trabajo de los niños.

3

Lesson 1.3 30

Continue concepts and skills practice with Lesson Check. Use Spiral Review to engage children in previously taught concepts and to promote content retention. Common Core standards are correlated to each section.