## 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.
7. Relate area to the operations of multiplication and addition.
b. Multiply side lengths to find areas of rectangles with whole-number side lengths in the context of solving real world and mathematical problems, and represent whole-number products as rectangular areas in mathematical reasoning.

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This 26-minute video, the second in a series of twelve, is part of the web-based course for K-8 teachers entitled Learning Math: Measurement offered by the Annenberg Foundation. Participants explore procedures for measuring and learn about standard units in the metric and customary systems, the relationships among units, and the approximate nature of measurement. In this video participants examine fundamental ideas such as unit iteration, partitioning and precision, ratio, and scale. To access the video from this link click on the VoD icon that is next to the video 2 description.
Course, Lesson Plans, Video
Grade Level: K, 1, 2, 3, 4, 5, 6+
Resource is part of a PD collection
These 3 activities, part of the Mathematics Developmental Continuum of the State of Victoria, Australia, are intended to introduce young learners to estimating and measuring area using formal units (square centimeters). Students also use the formula length times width to calculate rectangular areas. Supporting documents, materials, and progress indicators are included.
Activity, Lesson Plans, Illustration
Resource is part of a PD collection
This professional development video clip shows students engaged in the first Common Core Practice Standard—Make sense of problems and persevere in solving them as learners make a decision about how much stain will be needed to cover the surface area of twenty-six completed boxes. Additional resources include a video transcript, teaching tips, and a link to a professional development reflection activity based upon the video. A related clip (cataloged separately) shows the same exploration by the same students but Common Core Practice Standard # #5-Use appropriate tools strategically is evident.
Instructional Strategy, Video
These 4 activities, part of the Mathematics Developmental Continuum of the State of Victoria, Australia, are intended to introduce learners to the problem solving skills of clarifying questions, making assumptions and choosing a solving strategy. Students are challenged to investigate problems in household math, open-ended planning projects, and Fermi questions. Supporting documents and progress indicators are included.
Activity, Instructor Guide/Manual
Grade Level: 3, 4, 5, 6+
Resource is part of a PD collection
This interactive Java applet use arrays and three different computational models (Grouping, Common, or Lattice) to help students visualize and understand the process of multiplication of whole numbers. In each method the user drags sliders to adjust the two factors and then observes the resulting changes in the rectangular array and in the respective algorithm and product.
Activity, Interactive Media
Grade Level: 2, 3, 4, 5
Resource is part of a PD collection
This Java applet enables students to explore the relationship of rectangular area and perimeter by manipulating the dimensions. Students have the option of fixing the area or the perimeter, and looking to maximize or minimize the other parameter. Hints and answers are provided.
Activity, Interactive Media
Grade Level: 3, 4, 5, 6+
This is a sample PARCC assessment task based on CCSS grade 3 operations and algebraic thinking standards as well as the measurement and data standards. In this interactive multi-step task students must write a number sentence that can be used to find how many tiles high the mural is at school and then show the value of the Distributive Property in solving a problem. Included are the alignments to the CCSS, a scoring rubric and background on the task itself.
Assessment, Problem Set, Reference Materials
This interactive Java applet allows users to explore the relationship between area and perimeter of both rectangles and irregular shapes. In the "Auto Draw" mode a shape is given, and the user finds the area and the perimeter. In the "Create Shape" mode users create their own shape and give the area and perimeter of that shape. The activity allows users to explore the relationship between shapes with a fixed perimeter and variable area or shapes with a a fixed area and variable perimeter. An optional scoring feature allows users to keep track of the number correct.
Interactive Media
This interactive Java applet allows users to explore perimeter and area and the relationship between them. The activity gives irregular shapes or rectangles on a grid, and then the user enters the perimeter and area of the figure. An optional scoring feature allows users to keep track of the number correct.
Interactive Media
In this 13-minute video Teacher Suney Park's students apply their knowledge of area and perimeter of rectangles in the context of a dinner table. The resource includes a transcript of the video, extension activities, and reflection questions for teachers.
Activity, Instructional Strategy, Lesson Plans, Video