MAT-02.G.03

MAT-02 Targeted Standards
(G) Domain: Geometry
Cluster: Reason with shapes and their attributes.

MAT-02.G.03 Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Partition: Divide into pieces. (ND)

Student Learning Targets:

Knowledge Targets

  • I can identify one-half, one-fourth, and one-third shaded parts.

Reasoning Targets

  • I can understand that the same shape can be divided into equal parts in different ways.

Skills (Performance) Targets

  • I can divide circles and rectangles into 2,3,and 4 equal parts in different ways.
  • I can use the words halves, thirds, fourths, and half of to describe the equal parts.
  • I can describe one whole as being 2 halves, 3 thirds, and 4 fourths.

Product Targets

 

Rubric / Proficiency Scale

Score   Description Sample Activity
4.0

Student is able to partition shapes into parts with equal areas; express the area of each part as a unit fraction of the whole; determine if fractions are equivalent; and use models to prove if fractions are greater than/less than another.

I can write a fraction to represent the shaded portion of a shape.

I can represent a fraction using models or pictures.

I can explain why fractions are equivalent.

I can use pictures/models to prove if a fraction is greater than/less than another fraction.

-
  3.5 In addition to Score 3.0 performance, the student demonstrates in-depth inferences and applications regarding the more complex content with partial success.
3.0

Student is able to partition circles and rectangles into two, three, and four equal parts without error; use the words halves, thirds, fourths; and recognize equal shares of identical wholes can have different shapes.

I can divide shapes into 2, 3, and 4 equal parts in more than one way with no mistakes.

I can use the words halves, thirds, and fourths to describe the equal parts.

-
  2.5 No major errors or emissions regarding 2.0 content and partial knowledge of the 3.0 content.
2.0

Student is able to divide shapes/pictures into halves and fourths in more than one way without error.

I can divide shapes into 2 and 4 equal parts in different ways with no mistakes.

I can use the words halves and fourths to describe the equal parts.

-
  1.5 In addition to 1.0 content, student has partial knowledge of the 2.0 and/or 3.0 content.
1.0

Student is able to identify shapes that have 1/2 and 1/4 parts shaded without error.

I can identify shapes/pictures that show 1/2 and 1/4 with no mistakes.

-
  0.5 Limited or no understanding of the skill is demonstrated.

Resources

Websites

Vocabulary

  • partition / divide
  • equal shares / parts
  • whole
  • one half
  • one fourth
  • one third
  • half of
  • third of
  • fourth of
  • halves
  • thirds
  • fourths
  • two halves
  • three thirds
  • four fourths

 

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