Math Chimp - Math games, videos, and worksheets aligned to the Common Core standards



Rate and keep track of your favorite activities!

Sign Up to Rate Activities!

4th Grade Resources - Geometric measurement - understand concepts of angle and measure angles.


Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:

  • 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 "one-degree angle," and can be used to measure angles.
  • An angle that turns through n one-degree angles is said to have an angle measure of n degrees.

Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.


Recognize 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.


Newest 4th Grade Resources - Geometric measurement - understand concepts of angle and measure angles.

(Click on a resource to see our full catalog)


Games


Videos




Welcome to Math Chimp! We create and collect free online math games, videos, and worksheets and organize them by the common core standards. We're glad you've come to find great online math activities here... they're free and always will be!
More about us...