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- 4.MD.C.5Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:
- 4.MD.C.6Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
- 4.MD.C.7Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.

- 4.MD.C.5aAn angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a âone-degree angle,â and can be used to measure angles.
- 4.MD.C.5bAn angle that turns through n one-degree angles is said to have an angle measure of n degrees.

4.MD.C.5a

An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a âone-degree angle,â and can be used to measure angles.

Angles and Pattern Blocks

4th Grade Math

Â» Unit:

Geometry

Big Idea:In this lesson, students work with a partner and pattern blocks to discover angle measurements and properties.

Complementary & Supplementary Angles

4th Grade Math

Â» Unit:

Geometry

Big Idea:Through an exploration process, students will practice using a protractor, recording observations, and constructing definitions for complementary and supplementary angles.

Right, Acute, & Obtuse Angles

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students will learn how to use a protractor and will construct definitions for right, acute, and obtuse angles.

Mini Golf Mystery - Using a Protractor

4th Grade Math

Â» Unit:

Geometry

Big Idea:In this lesson, students create angles on a mini golf course in order to practice using a protractor.

Practice with Protractors

4th Grade Math

Â» Unit:

Geometry

Big Idea:In this direct instructional approach lesson, students practice using a protractor to measure various sized angles.

Adding up Angles

4th Grade Math

Â» Unit:

Geometry

Big Idea:In this lesson, students are up and out of their seats in an engaging problem solving strategy. Students deepen their understanding about angles as they talk with peers about various strategies to determine angle measurements.

Measuring Angles Inside Shapes

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students will take turns measuring and finding the sum of angles within a variety of shapes.

Circles

5th Grade Math

Â» Unit:

Geometry

Big Idea:Tying it together - literature and math. Thank you Sir Cumference and the Knights of the Round Table!

Types of Triangles

4th Grade Math

Â» Unit:

Geometry

Big Idea:Students will classify triangles into groups and will later determine the attributes of different triangle types.

4.MD.C.5a

An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a âone-degree angle,â and can be used to measure angles.

4.MD.C.5b

An angle that turns through n one-degree angles is said to have an angle measure of n degrees.