Subject:

Mathematics

Grade:

5-8

ICLE Standards:

Geometry: Develop an understanding of various types of angles: acute, right and obtuse.

Measurement: Develop the skill of using a protractor to measure the degree measurement of an angle and to draw angles given their degree measurement.

Performance Task:

Locate at least five objects in your classroom that contain different kinds of plane angles. You may use physical objects, pictures, manipulative materials, such as pattern blocks, etc. Be sure that your objects represent all three types of angles - acute, right and obtuse angles. Not every object will contain all three types of angles. Use a protractor to measure each plane angle of your objects. In your math journal, make a chart of your objects. Give the geometric name that could be associated with the object, the degree measurement of each angle of the object and the type of angle that it is. Using your protractor, construct angles equal to each angle of all the objects you use.

Knowledge / Skills:

Perform operations with signed (positive and negative) numbers, including decimals, ratios, percents, and fractions.  (m1)

Understand the properties and classification of polygons of more than four sides (e.g., pentagon, hexagon, octagon, decagon, etc.).  (m26)

Use writing as a tool for learning in formats such as learning logs, laboratory reports, note-taking, and journals.  (ela40)

Rubric:

Rubric Scoring: 0, 1, 2, 3

• identifies at least five two-dimensional objects in classroom containing the three types of angles

• correctly uses protractor to measure the angles of the objects selected

• correctly identifies each angle as acute, obtuse or right

• accurately uses protractor to draw models of the angles in the selected objects

• enters work in math journal in a neat and organized manner

• identifies fewer than the five required two-dimensional objects

• selects objects that do not contain all three types of angles

• has difficulty using protractor to measure angles (angle measurements are not accurate)

• makes some errors in identification of angles as acute, right or obtuse

• needs help constructing angles using protractor

• enters work into journal, but it is incomplete, not neat and poorly organized

• identifies fewer than the five required two-dimensional objects

• objects selected do not contain all three types of angles

• needs constant help using protractor (even with help, most angle measurements are inaccurate)

• does not identify which angles are acute, right and obtuse

• does not construct angles using protractor

• enters work into math journal, but it is incomplete, inaccurate, messy and unorganized

• makes little or no attempt to complete the task

Keywords:

GEOMETRY
GEOMETRIC SHAPES
PROBLEM SOLVING
TWO-DIMENSIONAL OBJECTS
ANGLES
MEASUREMENT 
JOURNAL

Grades:

Kg [] - 1 [] - 2 [] - 3 [] - 4 [] - 5 [X] - 6 [X] - 7 [X] - 8 [X] - 9 [] - 10 [] - 11 [] - 12 []

ICLE Application:

D

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