# MAT-02 "I can ... statements"

 (G) Geometry Categories All categories Not categorized (G) Geometry (MD) Measurement and Data (NBT) Number and Operations in Base Ten (OA) Operations and Algebraic Thinking Prioritized

# Geometry

## Narrative for the (G) Geometry

Grade 2 students learn to name and describe the defining attributes of categories of two-dimensional shapes, including circles, triangles, squares, rectangles, rhombuses, trapezoids, and the general category of quadrilateral. They describe pentagons, hexagons, octagons, and other polygons by the number of sides. Because they have developed both verbal descriptions of these shapes and their defining attributes and a rich store of associated mental images, they are able to draw shapes with specified attributes, such as a shape with five sides or a shape with six angles.

Students in Grade 2 also explore decompositions of shapes into regions that are congruent or have equal area. For example, two squares can be partitioned into fourths in different ways. Any of these fourths represents an equal share of the shape (e.g., “the same amount of cake”) even though they have different shapes.

## Calculation Method for Domains

Domains are larger groups of related standards. The Domain Grade is a calculation of all the related standards. Click on the standard name below each Domain to access the learning targets and rubrics/ proficiency scales for individual standards within the domain.

#### MAT-02.G.01

Under Development

 MAT-02 Targeted Standards(G) Domain: GeometryCluster: Reason with shapes and their attributes. MAT-02.G.01 Recognize and draw shapes having specified attributes, such as a given number of angles or a given number of equal faces. Identify triangles, quadrilaterals, pentagons, hexagons, and cubes.

• I can

• I can

• I can

• I can

## Proficiency (Rubric) Scale

 Score Description Sample Activity 4.0 Student is able to - 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 “The Standard.” Student is able to - 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 - 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 - 0.5 Limited or no understanding of the skill id demonstrated.

## Resources

### Vocabulary

• List

#### MAT-02.G.02

Under Development

 MAT-02 Targeted Standards(G) Domain: GeometryCluster: Reason with shapes and their attributes. MAT-02.G.02 Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

• I can

• I can

• I can

• I can

## Proficiency (Rubric) Scale

 Score Description Sample Activity 4.0 Student is able to - 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 “The Standard.” Student is able to - 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 - 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 - 0.5 Limited or no understanding of the skill id demonstrated.

## Resources

### Vocabulary

• List

#### MAT-02.G.03

 MAT-02 Targeted Standards(G) Domain: GeometryCluster: 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.

## 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

### 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