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Points and Lines All Around

Grade 4: Unit 7: Lesson 4

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Lesson Purpose

The purpose of this lesson is for students to practice identifying parallel and intersecting lines and

drawing them.

Lesson Narrative

In this lesson, students identify parallel and intersecting lines in the world around them—in a map

of a neighborhood, in the letters of the alphabet, in some part of their classroom, and in familiar

logos. They apply their understanding to represent and draw a part of their environment that shows

such lines and to create a new logo with these types of lines. The synthesis of this lesson further

highlights the presence and necessity of parallel and intersecting lines in real life.

In future lessons, students will use their understanding of lines that intersect to talk about angles.

Learning Goals

• Draw figures with parallel and intersecting lines.

• Identify parallel and intersecting lines in figures and drawings.

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Let’s find parallel and intersecting lines all around us.

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Which One Doesn’t Belong: Four-sided Shapes

Warm-Up

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Which one doesn’t belong?

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Let’s Talk About It!

How might we know if the sides of a figure are parallel?

All four quadrilaterals have at least one pair of parallel sides. Do all quadrilaterals have at least

one pair of parallel sides?

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Spot Lines and Line Segments

Activity 1

MLR8: Discussion Supports

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What do you notice about the streets on the map?

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Here is a map of a neighborhood in Staten Island, New York.

On the map, find and label the following items:

• 4 line segments of different lengths

• 3 pairs of parallel lines

• 2 pairs of lines that are not parallel

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In the words WHALE and JOY,

which letter has:

a. No parallel segments?

b. Exactly one pair of parallel segments?

c. More than one pair of parallel segments?

d. Only one segment?

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Let’s Talk About It!

Were there any pairs of lines that you had assumed to be parallel at first but then realized that they are not? How did you find out?

Can someone else show a different pair of parallel lines? A different pair of lines that are not parallel?

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Draw and Design with Lines

Activity 2

Action and Expression

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Draw a sketch of a part of our classroom and be sure to include:

1. at least 3 pairs of parallel line segments

2. intersecting line segments that make square corners

3. intersecting line segments that don’t make square corners

Trade sketches with a partner and find the specified lines in each other’s sketches.

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Here are some symbols and logos that you may recognize. All of them have intersecting and

parallel line segments.

Design a logo with at least 8 parallel segments and 8 intersecting line segments.

Use a ruler for any straight parts of your logo.

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Let’s Talk About It!

Where did you find parallel lines in our classroom?
Where did you find lines that make square corners?
Where did you find lines or segments that do not make square corners when they intersect?

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Lesson Synthesis

Where do you see parallel lines in the images?

What’s the difference between the lines you see in the photos of the track and the drawing of the track?

Why do you think there’s a difference?

When you were creating your sketch or logo today, how did you make sure that the segments that need to be parallel are actually parallel?

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Word Fun

Cool-Down

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Which letters in the phrase FUN KITES have:

a. parallel segments

b. no parallel segments

Cool-Down: Word Fun

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Here is a field of dots. Use it to draw 2 pairs of parallel lines, each pair pointing in a different direction.

Cool-Down: Word Fun

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Image Citations

https://giphy.com/gifs/love-graphic-colour-3o7TKC4mi8mbibXI88

https://unsplash.com/photos/ondAFiKGsT4

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