## Description

- Overview:
- This resource was created by the Washington Office of Superintendent of Public Instruction.

- Subject:
- Mathematics
- Level:
- Lower Primary, Upper Primary
- Grades:
- Grade 1, Grade 2, Grade 3, Grade 4
- Material Type:
- Activity/Lab, Interactive
- Author:
- Hannah Hynes-Petty, Washington OSPI OER Project, Jennifer Cronquist, Arlene Crum, Barbara Soots, Washington OSPI Mathematics Department
- Date Added:
- 10/09/2020

- License:
- Creative Commons Attribution
- Language:
- English
- Media Format:
- Downloadable docs

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## Standards

Learning Domain: Geometry

Standard: Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape. (Students do not need to learn formal names such as "right rectangular prism."ť)

Degree of Alignment: Not Rated (0 users)

Learning Domain: Geometry

Standard: Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Order three objects by length; compare the lengths of two objects indirectly by using a third object.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Geometry

Standard: Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Geometry

Standard: Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Number and Operations - Fractions

Standard: Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b. (Grade 3 expectations in this domain are limited to fractions with denominators 2, 3, 4, 6, and 8.)

Degree of Alignment: Not Rated (0 users)

Learning Domain: Measurement and Data

Standard: Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

Degree of Alignment: Not Rated (0 users)

Learning Domain: Mathematical Practices

Standard: Reason abstractly and quantitatively. Mathematically proficient students make sense of the quantities and their relationships in problem situations. Students bring two complementary abilities to bear on problems involving quantitative relationships: the ability to decontextualize"Óto abstract a given situation and represent it symbolically and manipulate the representing symbols as if they have a life of their own, without necessarily attending to their referents"Óand the ability to contextualize, to pause as needed during the manipulation process in order to probe into the referents for the symbols involved. Quantitative reasoning entails habits of creating a coherent representation of the problem at hand; considering the units involved; attending to the meaning of quantities, not just how to compute them; and knowing and flexibly using different properties of operations and objects.

Degree of Alignment: Not Rated (0 users)

Cluster: Measure lengths indirectly and by iterating length units

Standard: Order three objects by length; compare the lengths of two objects indirectly by using a third object.

Degree of Alignment: Not Rated (0 users)

Cluster: Reason with shapes and their attributes

Standard: Compose two-dimensional shapes (rectangles, squares, trapezoids, triangles, half-circles, and quarter-circles) or three-dimensional shapes (cubes, right rectangular prisms, right circular cones, and right circular cylinders) to create a composite shape, and compose new shapes from the composite shape. (Students do not need to learn formal names such as “right rectangular prism.”)

Degree of Alignment: Not Rated (0 users)

Cluster: Reason with shapes and their attributes

Standard: Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.

Degree of Alignment: Not Rated (0 users)

Cluster: Reason with shapes and their attributes

Standard: Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.

Degree of Alignment: Not Rated (0 users)

Cluster: Reason with shapes and their attributes

Standard: Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.

Degree of Alignment: Not Rated (0 users)

Cluster: Develop understanding of fractions as numbers

Standard: Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b. (Grade 3 expectations in this domain are limited to fractions with denominators 2, 3, 4, 6, and 8.)

Degree of Alignment: Not Rated (0 users)

Cluster: Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit

Standard: Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.

Degree of Alignment: Not Rated (0 users)

# Common Core State Standards Math

Cluster: Mathematical practices

Standard: Reason abstractly and quantitatively. Mathematically proficient students make sense of the quantities and their relationships in problem situations. Students bring two complementary abilities to bear on problems involving quantitative relationships: the ability to decontextualize—to abstract a given situation and represent it symbolically and manipulate the representing symbols as if they have a life of their own, without necessarily attending to their referents—and the ability to contextualize, to pause as needed during the manipulation process in order to probe into the referents for the symbols involved. Quantitative reasoning entails habits of creating a coherent representation of the problem at hand; considering the units involved; attending to the meaning of quantities, not just how to compute them; and knowing and flexibly using different properties of operations and objects.

Degree of Alignment: Not Rated (0 users)

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