Reteach
Chapter 9
Grade 1
Name
Lesson 1 Reteach
Squares and Rectangles
Trace each side of the rectangle and square.
There is a dot on each vertex.
rectangle
4
4
square
4
4
sides
vertices
sides
vertices
2.
1.
92
sides
sides
vertices
vertices
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
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Trace each shape. Write how many sides
and vertices.
Name
Lesson 2
Reteach
Triangles and Trapezoids
Trace each side of the trapezoid and triangle.
There is a dot on each vertex.
triangle
trapezoid
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4
4
3
3
sides
vertices
sides
vertices
Trace each shape. Write how many sides
and vertices.
1.
2.
sides
sides
vertices
vertices
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
93
Name
Lesson 3
Reteach
Circles
Circles do not have vertices and sides. They
are round and curved. Trace the circle.
0
0
sides
vertices
2.
1.
94
sides
sides
vertices
vertices
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
Trace each shape. Write how many sides
and vertices.
Name
Lesson 4
Reteach
Compare Shapes
These shapes are alike. Write how they
are alike.
They have
They have
4
4
sides.
vertices.
Write how these shapes are alike.
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
1.
They have
sides.
They have
vertices.
2.
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
95
Name
Lesson 5
Reteach
Composite Shapes
You can use two-dimensional shapes to make
other two-dimensional shapes.
⇨
Two squares make a rectangle. Draw a line to
show your model.
Circle the two pattern blocks used to make the shape.
Draw a line to show your model.
1.
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2.
3.
96
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
Name
Lesson 6
Reteach
More Composite Shapes
1. Use
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
6
2. Use
to make the
make a
and
and
below.
.
to make the
make a
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
below.
.
97
Name
Lesson 7
Reteach (1)
Problem Solving
STRATEGY: Use Logical Reasoning
Millie covered the trapezoid with the same
3 blocks. Which blocks did she use?
Step 1
Understand
What do you know?
Millie covered the trapezoid with the
same 3 blocks.
What do you need to find?
The type of blocks she used.
Step 2
How will I solve the problem?
Step 3
Solve
logical reasoning
I will use
Millie used 3
Step 4
triangles
.
.
Is my answer reasonable? Explain.
Check
98
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
Plan
Name
Lesson 7
Reteach (2)
Problem Solving
STRATEGY: Use Logical Reasoning
1. I have 0 sides and 0 vertices. What am I?
I am a
.
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2. Connor covered the pattern block with the
same 2 blocks. Which blocks did he use to
cover the rectangle?
2
3. Kelly used pattern blocks to make the shape
below. Which block is missing from Kelly’s
shape?
A
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
is missing.
99
Name
Lesson 8
Reteach
Equal Parts
Equal parts make a whole.
This shape has 2 equal parts.
Look at the shapes. Count the equal parts.
Write the number.
2.
1.
4.
3.
equal parts
100
equal parts
equal parts
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
equal parts
Name
Lesson 9
Reteach
Halves
This square has 2 equal parts.
Each part is half of the square.
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Draw the missing half so the shape has
2 equal halves.
1.
2.
3.
4.
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
101
Name
Lesson 10
Reteach
Quarters and Fourths
A shape that is divided into 4 equal parts is
divided into fourths or quarters.
4 equal parts or 4 fourths
or 4 quarters
Write how many equal parts make up
the whole.
1.
2.
4.
3.
equal parts
102
equal parts
equal parts
Grade 1 • Chapter 9 Two-Dimensional Shapes and Equal Shares
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
equal parts