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# STEAM MATH 4.NBT.3

## Kansas State Fair Steam Ahead

Objective:
Extend students recognition of angles as geometric shapes. State Standards for Math 4.MD.5a: Recognize angles as geometric shapes that are formed whenever two rays share a common endpoint and understand concepts of angle measurement.

Materials: Paper and pencil.

Student Challenge:
Locate and identify 2 right angles, acute angles, straight angles and obtuse angles throughout the Fairgrounds. On your paper draw the angle, labels its name and location of where you found it.

Lesson:
During your Kansas State Fair field trip have the students watch for different angles. As students locate an angle, have them draw the angle on their paper, label the angle by its name and list the locations where they found that particular angle. The midway (before the rides start for the afternoon) would be a fun area to look for different geometric shapes and angles.

Domain: Measurement and Data (4.MD.5a)
Cluster: Geometric measurement: understand concepts of angle and measure angles.

Standard: 5. Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement: A. 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.

List and Define the Key Concepts: (noun)     angles, rays, endpoints, circle, degrees

List and Define the Learning Target: (verb)    recognize, measure, intersect

Bloom’s Thinking Level: Remember Understand Apply Analyze Evaluate Create

Webb’s Depth of Knowledge: Level 1(Recall)

Learning Targets: What are the knowledge, reasoning, performance skills, and products that underpin the standard?
Knowledge Target (Know It): I can define an angle. I can recognize a circle as a geometric figure that has 306 degrees. I can recognize and identify an angle as a geometric shape formed from 2 rays with a common endpoint. I can recognize that an angle is a fraction of a 360 degree circle. I can explain the angle measurement in terms of degrees.

Reasoning Target (Mental Process – Use It): I can compare angles to circles with the angles point at the center of the circle to determine the measure of the angle.

Reason abstractly and quantitatively
Look for and make use of structure

How is this standard different than the 2003 standard?    Not tested

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