Unit 4 - Circles, Polygons, and Angles

Unit 4 Lesson 1

Lesson Objectives:
1.Identify and draw lines, rays, and line segments

2. Measure Angles

3. Classify angles according to their measures

Unit 4 Lesson 1 page 151 Identify Lines.wmv
Unit 4 Lesson 1 Vertical angles and complementary and supplementary angels pages 153 and 154.wmv

Extra Video on Complentary and Supplementary Angles


Unit 4 Lesson 2 - Polygons and Angles

Lesson Objectives:
1. Discover the total measure of the interior angles of triangles and of quadrilaterals.

2. Determine missing angle measures.
Unit 4 Lesson 2 Polygons and Angles practice book pages 157, 159,160.wmv

Extra Videos on using protractors:

Unit 4 Lesson 3 - Compare and Contrast Polygons

Lesson Objectives:
1. Identify Congruent Polygons

2. Sort and classify polygons.
Unit 4 Lesson 3 Identify Conguent Figures pg. 161.wmv

Website for Vocabulary Assignment also has quizzes:

Link to Polygon Vocabulary:
Vocabulary on Polygons.doc


Unit 4 Lesson 4 - Circles and Angles

Lesson Objectives:
1. Identify angles of a circle.

2. Identify turns about the center of a circle.

3. Determine the position of an object after a turn or a series of turns.
Unit 4 Lesson 4 Circles and Angles 165 - 168.wmv
Unit 4 Lesson 4 Turns of a circle pg 165 - 168.wmv


Unit 4 Lesson 5 - Symmetry

Lesson Objectives:
1. Recognize line symmetry and rotational symmetry.

2. Determine the position of an object after a turn or a series of turns.

Unit 4 Lesson 5 pg. 169 and 170 Identify Line of Symemetry and Rotational Symmetry.wmv

Video on Symmetry: http://www.linkslearning.org/Kids/1_Math/2_Illustrated_Lessons/4_Line_Symmetry/index.html

Symmetry Activity Links:

Unit 4 Lesson 6 - Circle Graphs

Lesson Objectives:
1. Read a circle graph, solve problems using a circle graph, and write questions about a circle graph.

2. Display the same data in different ways.

3. Determine angle measures to make a circle graph.

Unit 4 Lesson 6 pgs 173 and 174 Circle Graphs.wmv

Unit 4 Lesson 7 - Circumference

Lesson Objectives:
1. Define and estimate circumference.

2. Round lengths in millimeters to the nearest whole centimeter.

3. Collect, record, and look for patterns in data.