Download 1 • 2 Points, Line Segments, Lines, and Rays

1 • 4 Parallelograms
Common Core State Standards Detail
• SMP2
Reason abstractly and quantitatively.
• SMP3
Construct viable arguments and critique the reasoning of others.
• SMP4
Model with mathematics.
• SMP5
Use appropriate tools strategically.
• SMP6
Attend to precision.
• SMP7
Look for and make use of structure.
• SMP8
Look for and express regularity in repeated reasoning.
• 4.G.1
Draw and identify lines and angles, and classify shapes by properties
of their lines and angles.
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and
perpendicular and parallel lines. Identify these in two-dimensional figures.
• 4.G.2
Draw and identify lines and angles, and classify shapes by properties
of their lines and angles.
Classify two-dimensional figures based on the presence or absence of
parallel or perpendicular lines, or the presence or absence of angles of a
specified size. Recognize right triangles as a category, and identify right
triangles.
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Teachers Lesson Guide

Lesson Opener p 35

Lesson Pages 36-40
Objective

To model the classification of quadrangles based on their properties.
Key Concepts and Skills
Develop definitions for parallel and
intersecting line segments, lines, and rays.
[Geometry Goal 1]

Develop a definition for perpendicular line segments.
[Geometry Goal 1]

Describe characteristics of parallelograms.
[Geometry Goal 2]

Classify quadrangles based on side and
angle properties.
[Geometry Goal 2]
Key Activities

Students review the meanings of parallel
lines, line segments, and rays. They
compare various parallelograms and
quadrangles.

Ongoing Assessment: Recognizing Student Achievement

Use journal page 10. [Geometry Goal 1]
Key Vocabulary

parallel lines

intersect

parallel line segments

parallel rays

perpendicular line segments
Materials

Math Masters p 14

Student Math Journal 1 pp 10 and 11

Student Reference Book p 100

Study Link 1-3
slate ♦ Geometry Template or straightedge
Games: Playing Subtraction Top-It
(Extended-Facts Version)

Math Masters p 506

Student Reference Book pp 263 and 264

per partnership: 4 each of number
cards 1-10 (from the Everything Math
Deck, if available)
Students practice subtraction fact
extensions.
Math Boxes 1 • 4

Student Math Journal 1 p 9

Students practice and maintain skills
through Math Box problems.
Study Link 1 • 4

Math Masters p 15

Students practice and maintain skills
through Study Link activities.
Exploring Parallel Line Segments with Geoboards

Math Masters p 16

geoboard ♦ rubber bands
Students explore parallel line segments using
a concrete model.
Solving a Straw-Squares Puzzle

Math Masters p 17

straws ♦ straightedge
Students solve a puzzle involving properties
of parallelograms.
Playing Sz'kwa

Math Masters p 505

Student Reference Book p 310

40 counters (20 each of 2 different colors)
Students apply their understanding of
intersecting line segments.