# q1-day43-geometry-constructingpolygons

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```					                           Mathematics Alignment Lesson
Grade 5 Quarter 1 Day 43

Common Core State Standard(s)                                       Alignment Lesson
Constructing Polygons
5.G.3 Understand that attributes belonging to
a category of two-dimensional figures can        1. Discuss yesterday’s Journal Prompt questions.
also belong to all subcategories of that         2. Provide each student with a geoboard and two copies of
category. For example, all rectangles have          Transparency/Blackline Master, “Geoboard Paper.”
four right angles and squares are rectangles,
so all squares have four right angles.           3. Instruct students to construct a polygon that has “3 sides with
2 sides equal” on their geoboards. Choose 2 different
5.G.4 Classify two-dimensional figures in a         representations and share them with the class. Engage
hierarchy based on properties.                      students in a brief discussion of the similarities and differences
between the two triangles, and ask students to name the
triangle. (Isosceles)
Standards for Mathematical Practice             4. Provide each student with a copy of Transparency/Blackline
Master, “Constructing Polygons Set A” (pages 1 and 2).
Standard 3 - Construct viable arguments and         Instruct them to independently create each polygon. After
critique the reasoning of others.      creating and drawing each polygon on Transparency/Blackline
Standard 5 – Use appropriate tools                  Master, “Geoboard Paper,” students should compare their
strategically                          shape with a designated partner and record similarities and
Standard 6 - Attend to precision.                   differences between the two shapes they constructed. Then,
they should record a name for the polygon they have drawn.
Materials Needed:                    5. Engage students in Math Talk about the polygons they
constructed for Set A. Discuss key polygon vocabulary that
   Transparencies/Blackline Masters,               emerges and create a word bank on the board for students to
“Geoboard Paper,” “Constructing             reference in their discussions with each other.
Polygons Set A” (2 pages)
“Constructing Polygons Set        6. Provide each student with a copy of Transparency/Blackline
B” (2 pages)                       Master, “Constructing Polygons Set B” (pages 1 and 2).
Instruct them to independently create each polygon. After
   Geoboard and rubber bands for each
creating and drawing each polygon on Transparency/Blackline
student
Master, “Geoboard Paper,” students should compare their
shape with a designated partner and record similarities and
differences between the two shapes they constructed. Then,
Assessment                          they should answer the question(s) provided.
Informal:                                        7. Engage students in Math Talk about the polygons they
 Assess student reasoning during                   constructed for Set B. Discuss key polygon vocabulary that
independent work, partner work, and             emerges and create a word bank on the board for students to
math talk.                                      reference in their discussions with each other.
 “Constructing Polygons Homework”               8. Students should complete Blackline Master, “Constructing
Polygons Homework” for homework.

Note: Discussions during this lesson deepen students' conceptual
Homework                         understanding that more general descriptions of attributes can
apply to more than one geometric figure. This will build essential
   “Blackline Master, “Constructing             background knowledge for Standard 5.G.4.
Polygons Homework”

Vocabulary                                Source: Teacher Created from Partners in
Mathematics Learning
None Referenced

Wake County Public School System, 2012
Transparency/Blackline Master   Grade 5   Day 43    Standards 5.G.3, 5.G.4
Name: ________________________
Date: ________________________

Geoboard Paper

Wake County Public School System, 2012
Transparency/Blackline Master       Grade 5       Day 43    Standards 5.G.3, 5.G.4

Name: ________________________
Date: ________________________

Constructing Polygons Set A
Directions: On a geoboard, independently create each shape described below and record it on geoboard
paper. Compare each of your polygons for 1-11 with your designated partner. Record similarities and
differences between the two shapes you constructed and write the name of your shape. Complete 12
independently.

Try to create a different polygon that fits each description.

1. 4 sides and 4 right angles

Similarities
Differences
Name

2. 3 sides and 1 right angle

Similarities
Differences
Name

3. 4 equal sides

Similarities
Differences
Name

4. 4 sides with none congruent and no right angles

Similarities
Differences
Name

5. 5 sides

Similarities
Differences
Name

Wake County Public School System, 2012
Transparency/Blackline Master    Grade 5   Day 43   Standards 5.G.3, 5.G.4
6. 5 sides and at least 1 right angle

Similarities
Differences
Name

7. 6 sides

Similarities
Differences
Name

8. 6 sides and at least one acute angle

Similarities
Differences
Name

9. 8 sides

Similarities
Differences
Name

10. 8 sides and at least one acute angle

Similarities
Differences
Name

11. 12 sides

Similarities
Differences
Name

12. Make a figure of your choice with more than 6 sides.
 How many sides does your polygon have? _____
 How many angles does your polygon have? _____
 What is the name of your polygon? ____________________________________________

Wake County Public School System, 2012
Transparency/Blackline Master       Grade 5       Day 43    Standards 5.G.3, 5.G.4

Name: ________________________
Date: ________________________

Constructing Polygons Set B
Directions: On a geoboard, independently create each shape described below and record it on geoboard
paper. Compare each of your polygons with your designated partner. Record similarities and differences
between the two shapes you constructed and answer the question(s) provided.

Try to create a different polygon that fits each description.

1. 4 sides with exactly 2 sides parallel

Similarities
Differences

Does this figure have a specific name? _______________________________________________

2. 4 sides with 2 pairs of parallel sides

Similarities
Differences

What is the name of this polygon? ___________________________________________________

3. 4 sides with exactly 1 pair of sides perpendicular

Similarities
Differences

Does this figure have a specific name? _______________________________________________

4. 4 sides with 2 pairs of sides perpendicular

Similarities
Differences

Can you make a different figure with these attributes? ___________________________________

What else do you notice about this figure? ____________________________________________

Wake County Public School System, 2012
Transparency/Blackline Master      Grade 5   Day 43   Standards 5.G.3, 5.G.4

5. 4 sides with no parallel sides

Similarities
Differences

Does your shape have any perpendicular sides? ________________________________________

6. 4 sides with no sides perpendicular

Similarities
Differences

Could this polygon have parallel sides? _______________________________________________

Does yours? ____________________________________________________________________

7. 3 sides with 2 sides perpendicular

Similarities
Differences

What is the specific name of this polygon? ____________________________________________

8. 5 sides with exactly 1 pair of parallel sides

Similarities
Differences

Does your figure have perpendicular sides? ___________________________________________

If so, can you make one that doesn’t? ________________________________________________

9. 6 sides with 3 pairs of parallel sides

Similarities
Differences

What else is true about this shape? _______________________________________________

Wake County Public School System, 2012
Blackline Master   Grade 5   Day 43   Standards 5.G.3, 5.G.4
Name: ________________________
Date: ________________________

Constructing Polygons Homework
Directions: Create 3 of your own “Constructing Polygons” descriptions. Then, draw an example of the
figure you described and name the figure.

1. Write a Description: _________________________________________________________________

Draw an Example:

Name the Figure: ____________________________________________________________________

2. Write a Description: _________________________________________________________________

Draw an Example:

Name the Figure: ____________________________________________________________________

3. Write a Description: _________________________________________________________________

Draw an Example:

Name the Figure: ____________________________________________________________________

Wake County Public School System, 2012

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