## Common Core State Standards for Mathematics

Grade(s) 3 resources related to the following standard:
Measurement and Data
Geometric measurement: understand concepts of area and relate area to multiplication and to addition.
5. Recognize area as an attribute of plane figures and understand concepts of area measurement.
a. A square with side length 1 unit, called "a unit square," is said to have "one square unit" of area, and can be used to measure area.

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This 60-page pdf document demonstrates the connections between the CCSS content standards and the mathematical practice standards. It is a compilation of research, standards from several states, instructional strategies, common misconceptions, and examples for each standard at the grade 3 level. It is intended to help teachers understand what each standard means in terms of what students must know and be able to do. Additional flip books are cataloged separately for grades K-2 and 4-5.
Instructional Strategy, Reference Materials
This web page provides links to resources aligned to the CCSS that guide and support third grade mathematics teaching and learning. Tasks developed by the Mathematics Assessment Resource Service (MARS) and Problems of the Month, (POM home page is cataloged separately) developed by the Noyce Foundation are included. The tasks were designed to measure students’ ability to solve non-routine problems, explain and justify their solutions, and promote high level thinking skills. They include the scoring rubric, student responses, and discussion of student understanding and misconceptions. Resources are listed for specific grade 3 standards and are also organized by progression for an alternate search route.
Instructional Strategy, Problem Set, Reference Materials
This interactive Java applet allows users to explore relationships between shapes with a fixed perimeter and variable area. Random irregular shapes or rectangles with a fixed perimeter are displayed on a grid, and then the user enters the area of the figure. An optional scoring feature allows users to keep track of the number correct.
Interactive Media
This question and answer service for math students and their teachers offers a searchable archive all about measurement at the elementary level.
Reference Materials, Community
Grade Level: 3, 4, 5, 6+
This question and answer service for math students and their teachers offers a searchable archive all about two-dimensional geometry at the elementary level.
Reference Materials, Community
Grade Level: 3, 4, 5, 6+
This interactive Java applet allows users to explore estimating numbers of objects, length, and area, by displaying two sets of random shapes, lines, or irregular figures on the screen. Users are asked if the first set is more or less than the second set. Options include: two difficulty levels; displaying guess history; a hint button; and an optional scoring feature that allows users to keep track of the number correct.
Interactive Media, Problem Set
Grade Level: 2, 3, 4, 5
This interactive Java applet allows users to explore estimating numbers of objects, length, and area, by displaying random shapes, lines, or irregular figures on the screen. Options include: three difficulty levels for accuracy; displaying guess history; a hint button; and an optional scoring feature that allows users to keep track of the number correct.
Interactive Media, Problem Set
Grade Level: 2, 3, 4, 5