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Learning Objective You will use the strategy act it out to solve real-world problems by combining shapes.
Name
Chapter 12 six hundred ninety-five 695
Show how to solve the problem.
Use shapes. Combine to make a new shape.
and
Then use the new shape.
and
What information do I need to use?
Cora uses this shape.
What do I need to find?
how Cora can make a
Cora wants to combine shapes to make a circle. She has . How can Cora make a circle?
Problem Solving • Make New Two-Dimensional ShapesEssential Question How can acting it out help you make new shapes from combined shapes?
circle
make
make
Lesson 12.5PROBLEM SOLVING
HOME CONNECTION • Recognizing how shapes can be put together and taken apart provides a foundation for future work with fractions.©
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Try Another ProblemTry Another Problem
MathTalk Math Processes and Practices 4
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1. Use to make a larger .
2. Use to make a .
Use shapes to solve. Draw to show your work.
Combine shapes to make a new shape.
and
Combine shapes to make a new shape.
and
Then use the new shape.
and
Then use the new shape.
and
make
make
make
make
Model How did you make the rectangle in Exercise 2?
• What do I need to find?
• What information do I need to use?
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Share and ShowShare and Show MATHBOARDMATHBOARD
Name
Chapter 12 • Lesson 5 six hundred ninety-seven 697
Math Processes and Practices 1 Analyze Relationships Use
shapes to solve. Draw to show your work.
Combine shapes to make a new shape.
and
Then use the new shape.
and
make
make
make
and
Combine shapes to make a new shape.
3. Use to make a .
Then use the new shape.
4. SMARTER Use and to make a .
TAKEHomEAcTiviTy• Have your child explain how he or she solved Exercise 3.
make
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Mid-Chapter Checkpoint Personal Math TrainerOnline Assessment and Intervention
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Concepts and SkillsConcepts and Skills
Write the number of sides and vertices (corners).
1. 2.
3.
Circle the shapes that can combine to make the new shape.
Step 1
Combine and to make .
Step 2 Then use and .
698 six hundred ninety-eight Chapter 12
— sides — sides
— vertices — vertices
4. SMARTER Which new shape can you make?
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Learning Objective You will use the strategy act it out to solve real-world problems by combining shapes.
Name©
Hou
ghto
n M
ifflin
Har
cour
t Pub
lishi
ng C
ompa
ny
Problem Solving • Make New Two-Dimensional Shapes
Use shapes to solve. Draw to show your work.
Chapter 12 six hundred ninety-nine 699
1. Use to make a .Step 1. Combine shapes to make a new shape.
Step 2. Then use the new shape.
make
make
and
and
Lesson 12.5Practice and Homework
2. Math Use pictures to show how you can make a new shape using a combined shape made from two trapezoids.
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Personal Math Trainer
FOR MORE PRACTICE GO TO THE
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2. Circle the shape that has no flat surfaces.
3. Which flat surface does a cylinder have?Circle your answer.
Spiral Review
Follow the steps.
1. Which new shape could you make?Circle your answer.
Lesson Check
Step 1.
Combine and to make .
Step 2.
Then use and .
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