4.GSR.7Angles and Angle Measurement

Expectations

• 4.GSR.7.1

  Recognize angles as geometric shapes formed when two rays share a common endpoint. Draw right, acute, and obtuse angles based on the relationship of the angle measure to 90 degrees.

• 4.GSR.7.2

  Measure angles in reference to a circle with the center at the common endpoint of two rays. Determine an angle’s measure in relation to the 360 degrees in a circle through division or as a missing factor problem.

Georgia Milestones coverage

• Mathematics Grade 4 (EOG) · Geometric & Spatial Reasoning

  Investigate the concepts of angles and angle measurement to estimate and measure angles.

  about 10% of the test · 6 points

What mastery looks like

Georgia's Achievement Level Descriptors. The levels are cumulative: each includes the ones before it. Proficient is on grade level.

Beginning

Identify an angle at the center of a circle as right, acute, or obtuse.

Developing

Given an angle or an angle measure, identify the angle as right, acute, or obtuse. Represent and identify angle measures using degrees.

Proficient

Given a circle divided into equal-sized wedges, find the angle of a wedge by dividing 360 by the number of wedges.

Distinguished

Investigate the concepts of angle measure using degrees to solve real-life mathematical problems.

The same standard across grades

1. Grade 2 · 2.GSR.7

   Draw and partition shapes and other objects with specific attributes, and conduct observations of everyday items and structures to identify how shapes exist in the world.

2. Grade 3 · 3.GSR.7

   Identify area as a measurable attribute of rectangles and determine the area of a rectangle presented in real-life, mathematical problems.

3. Grade 4 · 4.GSR.7 (this standard)

   Investigate the concepts of angles and angle measurement to estimate and measure angles.